Seven legal risks of promoting unproven COVID-19 treatments

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Mon, 12/06/2021 - 12:51

The emergence of COVID-19 has given the medical world a bewildering array of prevention and treatment protocols. Some physicians are advocating treatments that have not been validated by sound scientific studies. This has already led to licensing issues and other disciplinary actions being taken against physicians, pharmacies, and other health care providers across the country.

Kuzma/istockphoto

Medical professionals try their very best to give sound advice to patients. A medical license does not, however, confer immunity from being misled.

The supporting “science” for alternative prevention and treatments may look legitimate, but these claims are often based on anecdotal evidence. Some studies involve small populations, some are meta-analyses of several small or single-case studies, and others are not properly designed, interpreted, or executed in line with U.S. research and requirements. Yet others have been conducted only in nonhuman analogues, such as frogs or mice.

Many people are refusing a vaccine that has been proven to be relatively safe and effective in numerous repeated and validated studies in the best medical centers across the globe – all in favor of less validated alternatives. Well-intentioned medical professionals may be tempted to promote the information and products featured on websites that advocate for unproven products and protocols. This can have serious legal consequences.
 

The crux of the issue

This is not a question of a physician’s first amendment rights. Nor is it a question of advocating for a scientifically valid minority medical opinion. The point of this article is that promoting unproven products, preventives, treatments, and cures can have dire consequences for licensed medical professionals.

On July 29, 2021, the Federation of State Medical Boards’ Board of Directors released a statement in response to a dramatic increase in the dissemination of COVID-19 vaccine misinformation and disinformation by physicians and other health care professionals on social media platforms, online, and in the media. The statement reads as follows:

“Physicians who generate and spread COVID-19 vaccine misinformation or disinformation are risking disciplinary action by state medical boards, including the suspension or revocation of their medical license. Due to their specialized knowledge and training, licensed physicians possess a high degree of public trust and therefore have a powerful platform in society, whether they recognize it or not. They also have an ethical and professional responsibility to practice medicine in the best interests of their patients and must share information that is factual, scientifically grounded, and consensus-driven for the betterment of public health. Spreading inaccurate COVID-19 vaccine information contradicts that responsibility, threatens to further erode public trust in the medical profession, and puts all patients at risk.”

 

What are the legal consequences?

Medical malpractice

The first consequence to consider is professional liability or medical malpractice. This applies if a patient claims harm as a result of the health care practitioner’s recommendation of an unproven treatment, product, or protocol. For example, strongly discouraging vaccination can result in a wrongful death claim if the patient follows the doctor’s advice, chooses not to vaccinate, contracts COVID-19, and does not recover. Recommending or providing unproven approaches and unapproved treatments is arguably a violation of the standard of care.

The standard of care is grounded in evidence-based medicine: It is commonly defined as the degree of care and skill that would be used by the average physician, who is practicing in his or her relevant specialty, under the same or similar circumstances, given the generally accepted medical knowledge at the time in question.

By way of example, one can see why inhaling peroxide, drinking bleach, or even taking Food and Drug Administration–approved medications that have little or no proven efficacy in treating or preventing COVID-19 is not what the average physician would advocate for under the same or similar circumstances, considering available and commonly accepted medical knowledge. Recommending or providing such treatments can be a breach of the standard of care and can form the basis of a medical malpractice action if, in fact, compensable harm has occurred.

In addition, recommending unproven and unapproved COVID-19 preventives and treatments without appropriate informed consent from patients is arguably also a breach of the standard of care. The claim would be that the patient has not been appropriately informed of the all the known benefits, risks, costs, and other legally required information such as proven efficacy and reasonably available alternatives.

In any event, physicians can rest assured that if a patient is harmed as a result of any of these situations, they’ll probably be answering to someone in the legal system.
 

Professional licensing action

Regardless of whether there is a medical malpractice action, there is still the potential for a patient complaint to be filed with the state licensing authority on the basis of the same facts and grounds. This can result in an investigation or an administrative complaint against the license of the health care provider.

This is not a mere potential risk. Licensing investigations are underway across the country. Disciplinary licensing actions have already taken place. For example, a Washington Medical Commission panel suspended the license of a physician assistant (PA) on Oct. 12, 2021, after an allegation that his treatment of COVID-19 patients fell below the standard of care. The PA allegedly began a public campaign promoting ivermectin as a curative agent for COVID-19 and prescribed it without adequate examination to at least one person, with no evidence from reliable clinical studies that establish its efficacy in preventing or treating COVID-19.

In licensing claims, alleged violations of failing to comply with the standard of care are usually asserted. These claims may also cite violations of other state statutes that encompass such concepts as negligence; breach of the duty of due care; incompetence; lack of good moral character; and lack of ability to serve the public in a fair, honest, and open manner. A licensing complaint may include alleged violations of statutes that address prescribing protocols, reckless endangerment, failure to supervise, and other issues.

The filing of an administrative complaint is a different animal from a medical malpractice action – they are not even in the same system or branch of government. The focus is not just about what happened to the one patient who complained; it is about protection of the public.

The states’ power to put a clinician on probation, condition, limit, suspend, or revoke the clinician’s license, as well as issue other sanctions such as physician monitoring and fines), is profound. The discipline imposed can upend a clinician’s career and potentially end it entirely.

Administrative discipline determinations are usually available to the public and are required to be reported to all employers (current and future). These discipline determinations are also sent to the National Practitioner Data Bank, other professional clearinghouse organizations (such as the Federation of State Medical Boards), state offices, professional liability insurers, payers with whom the clinician contracts, accreditation and certification organizations, and the clinician’s patients.

Discipline determinations must be promptly reported to licensing agencies in other states where the clinician holds a license, and often results in “sister state” actions because discipline was issued against the clinician in another state. It must be disclosed every time a clinician applies for hospital privileges or new employment. It can result in de-participation from health care insurance programs and can affect board certification, recertification, or accreditation for care programs in which the clinician participates.

In sum, licensing actions can be much worse than medical malpractice judgments and can have longer-term consequences.
 

 

 

Peer review and affected privileges

Recommending, promoting, and providing unapproved or unproven treatments, cures, or preventives to patients may violate hospital/health system, practice group, or surgical center bylaws. This can trigger the peer review process, which serves to improve patient safety and the quality of care.

The peer review process may be commenced because of a concern about the clinician’s compliance with the standard of care; potential patient safety issues; ethical issues; and the clinician’s stability, credibility, or professional competence. Any hospital disciplinary penalty is generally reported to state licensing authorities, which can trigger a licensing investigation. If clinical privileges are affected for a period of more than 30 days, the organization must report the situation to the National Practitioner Data Bank.
 

Criminal charges

Depending on the facts, a physician or other health care professional could be charged with reckless endangerment, criminal negligence, or manslaughter. If the clinician was assisting someone else who profited from that clinician’s actions, then we can look to a variety of potential federal and state fraud charges as well.

Conviction of a fraud-related felony may also lead to federal health care program and Centers for Medicare & Medicaid Services (CMS) exclusion for several years, and then CMS preclusion that can be imposed for years beyond the conclusion of the statutorily required exclusion.
 

Breach of contract

Some practice groups or other organizational employers have provisions in employment contracts that treat discipline for this type of conduct as a breach of contract. Because of this, the clinician committing breach may be subject to liquidated damages clauses, forfeiture of monies (such as bonuses or other incentives or rewards), termination of employment, forced withdrawal from ownership status, and being sued for breach of contract to recover damages.

Reputation/credibility damage and the attendant consequences

In regard to hospitals and health care system practice groups, another risk is the loss of referrals and revenue. Local media may air or publish exposés. Such stories may widely publicize the media’s version of the facts – true or not. This can cause immediate reputation and credibility damage within the community and may adversely affect a clinician’s patient base. Any information that is publicly broadcast might attract the attention of licensing and law enforcement authorities and taint potential jurors.

Hospitals and health care systems may pull privileges; post on websites; make official statements about the termination of affiliation; or denounce the clinician’s behavior, conduct, and beliefs as being inconsistent with quality care and patient safety. This causes further damage to a physician’s reputation and credibility.

In a group practice, accusations of this sort, licensing discipline, medical malpractice liability, investigations, loss of privileges, and the other sequelae of this conduct can force the withdrawal of the clinician as a member or shareholder in multiprovider groups. Adverse effects on the financial bottom line, patient referrals, and patient volume and bad press are often the basis for voting a clinician out.
 

Violation of the COVID-19 Consumer Protection Act of 2020

For the duration of the COVID-19 public health emergency, the FTC COVID-19 Consumer Protection Act makes it unlawful for any person, partnership, or corporation (as those terms are defined broadly in the act) to engage in a deceptive act or practice in or affecting commerce associated with the treatment, cure, prevention, mitigation, or diagnosis of COVID-19 or a government benefit related to COVID-19.

The first enforcement action authorized by this act took place in April 2021 against a chiropractor who promised vitamin treatments and cures for COVID-19. The act provides that such a violation shall be treated as a violation of a rule defining an unfair or deceptive act or practice prescribed under the FTC Act.

Under the act, the FTC is authorized to prescribe “rules that define with specificity acts or practices which are unfair or deceptive acts or practices in or affecting commerce.” Deceptive practices are defined as involving a material representation, omission, or practice that is “likely to mislead a consumer acting reasonably in the circumstances.” An act or practice is unfair if it “causes or is likely to cause substantial injury to consumers which is not reasonably avoidable by consumers themselves and not outweighed by countervailing benefits to consumers or to competition.”

After an investigation, the FTC may initiate an enforcement action using either an administrative or judicial process if it has “reason to believe” that the law has been violated. Violations of some laws may result in injunctive relief or civil monetary penalties, which are adjusted annually for inflation.

In addition, many states have deceptive and unfair trade laws that can be enforced in regard to the recommendation, sale, or provision of unproven or unapproved COVID-19 treatments, cures, and preventives as well.
 

Conclusion

It is difficult even for intelligent, well-intentioned physicians to know precisely what to believe and what to advocate for in the middle of a pandemic. It seems as though new reports and recommendations for preventing and treating COVID-19 are surfacing on a weekly basis. By far, the safest approach for any medical clinician to take is to advocate for positions that are generally accepted in the medical and scientific community at the time advice is given.

Mr. Whitelaw disclosed no relevant financial relationships. Ms. Janeway disclosed various associations with the Michigan Association for Healthcare Quality and the Greater Houston Society for Healthcare Risk Management. A version of this article first appeared on Medscape.com.

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The emergence of COVID-19 has given the medical world a bewildering array of prevention and treatment protocols. Some physicians are advocating treatments that have not been validated by sound scientific studies. This has already led to licensing issues and other disciplinary actions being taken against physicians, pharmacies, and other health care providers across the country.

Kuzma/istockphoto

Medical professionals try their very best to give sound advice to patients. A medical license does not, however, confer immunity from being misled.

The supporting “science” for alternative prevention and treatments may look legitimate, but these claims are often based on anecdotal evidence. Some studies involve small populations, some are meta-analyses of several small or single-case studies, and others are not properly designed, interpreted, or executed in line with U.S. research and requirements. Yet others have been conducted only in nonhuman analogues, such as frogs or mice.

Many people are refusing a vaccine that has been proven to be relatively safe and effective in numerous repeated and validated studies in the best medical centers across the globe – all in favor of less validated alternatives. Well-intentioned medical professionals may be tempted to promote the information and products featured on websites that advocate for unproven products and protocols. This can have serious legal consequences.
 

The crux of the issue

This is not a question of a physician’s first amendment rights. Nor is it a question of advocating for a scientifically valid minority medical opinion. The point of this article is that promoting unproven products, preventives, treatments, and cures can have dire consequences for licensed medical professionals.

On July 29, 2021, the Federation of State Medical Boards’ Board of Directors released a statement in response to a dramatic increase in the dissemination of COVID-19 vaccine misinformation and disinformation by physicians and other health care professionals on social media platforms, online, and in the media. The statement reads as follows:

“Physicians who generate and spread COVID-19 vaccine misinformation or disinformation are risking disciplinary action by state medical boards, including the suspension or revocation of their medical license. Due to their specialized knowledge and training, licensed physicians possess a high degree of public trust and therefore have a powerful platform in society, whether they recognize it or not. They also have an ethical and professional responsibility to practice medicine in the best interests of their patients and must share information that is factual, scientifically grounded, and consensus-driven for the betterment of public health. Spreading inaccurate COVID-19 vaccine information contradicts that responsibility, threatens to further erode public trust in the medical profession, and puts all patients at risk.”

 

What are the legal consequences?

Medical malpractice

The first consequence to consider is professional liability or medical malpractice. This applies if a patient claims harm as a result of the health care practitioner’s recommendation of an unproven treatment, product, or protocol. For example, strongly discouraging vaccination can result in a wrongful death claim if the patient follows the doctor’s advice, chooses not to vaccinate, contracts COVID-19, and does not recover. Recommending or providing unproven approaches and unapproved treatments is arguably a violation of the standard of care.

The standard of care is grounded in evidence-based medicine: It is commonly defined as the degree of care and skill that would be used by the average physician, who is practicing in his or her relevant specialty, under the same or similar circumstances, given the generally accepted medical knowledge at the time in question.

By way of example, one can see why inhaling peroxide, drinking bleach, or even taking Food and Drug Administration–approved medications that have little or no proven efficacy in treating or preventing COVID-19 is not what the average physician would advocate for under the same or similar circumstances, considering available and commonly accepted medical knowledge. Recommending or providing such treatments can be a breach of the standard of care and can form the basis of a medical malpractice action if, in fact, compensable harm has occurred.

In addition, recommending unproven and unapproved COVID-19 preventives and treatments without appropriate informed consent from patients is arguably also a breach of the standard of care. The claim would be that the patient has not been appropriately informed of the all the known benefits, risks, costs, and other legally required information such as proven efficacy and reasonably available alternatives.

In any event, physicians can rest assured that if a patient is harmed as a result of any of these situations, they’ll probably be answering to someone in the legal system.
 

Professional licensing action

Regardless of whether there is a medical malpractice action, there is still the potential for a patient complaint to be filed with the state licensing authority on the basis of the same facts and grounds. This can result in an investigation or an administrative complaint against the license of the health care provider.

This is not a mere potential risk. Licensing investigations are underway across the country. Disciplinary licensing actions have already taken place. For example, a Washington Medical Commission panel suspended the license of a physician assistant (PA) on Oct. 12, 2021, after an allegation that his treatment of COVID-19 patients fell below the standard of care. The PA allegedly began a public campaign promoting ivermectin as a curative agent for COVID-19 and prescribed it without adequate examination to at least one person, with no evidence from reliable clinical studies that establish its efficacy in preventing or treating COVID-19.

In licensing claims, alleged violations of failing to comply with the standard of care are usually asserted. These claims may also cite violations of other state statutes that encompass such concepts as negligence; breach of the duty of due care; incompetence; lack of good moral character; and lack of ability to serve the public in a fair, honest, and open manner. A licensing complaint may include alleged violations of statutes that address prescribing protocols, reckless endangerment, failure to supervise, and other issues.

The filing of an administrative complaint is a different animal from a medical malpractice action – they are not even in the same system or branch of government. The focus is not just about what happened to the one patient who complained; it is about protection of the public.

The states’ power to put a clinician on probation, condition, limit, suspend, or revoke the clinician’s license, as well as issue other sanctions such as physician monitoring and fines), is profound. The discipline imposed can upend a clinician’s career and potentially end it entirely.

Administrative discipline determinations are usually available to the public and are required to be reported to all employers (current and future). These discipline determinations are also sent to the National Practitioner Data Bank, other professional clearinghouse organizations (such as the Federation of State Medical Boards), state offices, professional liability insurers, payers with whom the clinician contracts, accreditation and certification organizations, and the clinician’s patients.

Discipline determinations must be promptly reported to licensing agencies in other states where the clinician holds a license, and often results in “sister state” actions because discipline was issued against the clinician in another state. It must be disclosed every time a clinician applies for hospital privileges or new employment. It can result in de-participation from health care insurance programs and can affect board certification, recertification, or accreditation for care programs in which the clinician participates.

In sum, licensing actions can be much worse than medical malpractice judgments and can have longer-term consequences.
 

 

 

Peer review and affected privileges

Recommending, promoting, and providing unapproved or unproven treatments, cures, or preventives to patients may violate hospital/health system, practice group, or surgical center bylaws. This can trigger the peer review process, which serves to improve patient safety and the quality of care.

The peer review process may be commenced because of a concern about the clinician’s compliance with the standard of care; potential patient safety issues; ethical issues; and the clinician’s stability, credibility, or professional competence. Any hospital disciplinary penalty is generally reported to state licensing authorities, which can trigger a licensing investigation. If clinical privileges are affected for a period of more than 30 days, the organization must report the situation to the National Practitioner Data Bank.
 

Criminal charges

Depending on the facts, a physician or other health care professional could be charged with reckless endangerment, criminal negligence, or manslaughter. If the clinician was assisting someone else who profited from that clinician’s actions, then we can look to a variety of potential federal and state fraud charges as well.

Conviction of a fraud-related felony may also lead to federal health care program and Centers for Medicare & Medicaid Services (CMS) exclusion for several years, and then CMS preclusion that can be imposed for years beyond the conclusion of the statutorily required exclusion.
 

Breach of contract

Some practice groups or other organizational employers have provisions in employment contracts that treat discipline for this type of conduct as a breach of contract. Because of this, the clinician committing breach may be subject to liquidated damages clauses, forfeiture of monies (such as bonuses or other incentives or rewards), termination of employment, forced withdrawal from ownership status, and being sued for breach of contract to recover damages.

Reputation/credibility damage and the attendant consequences

In regard to hospitals and health care system practice groups, another risk is the loss of referrals and revenue. Local media may air or publish exposés. Such stories may widely publicize the media’s version of the facts – true or not. This can cause immediate reputation and credibility damage within the community and may adversely affect a clinician’s patient base. Any information that is publicly broadcast might attract the attention of licensing and law enforcement authorities and taint potential jurors.

Hospitals and health care systems may pull privileges; post on websites; make official statements about the termination of affiliation; or denounce the clinician’s behavior, conduct, and beliefs as being inconsistent with quality care and patient safety. This causes further damage to a physician’s reputation and credibility.

In a group practice, accusations of this sort, licensing discipline, medical malpractice liability, investigations, loss of privileges, and the other sequelae of this conduct can force the withdrawal of the clinician as a member or shareholder in multiprovider groups. Adverse effects on the financial bottom line, patient referrals, and patient volume and bad press are often the basis for voting a clinician out.
 

Violation of the COVID-19 Consumer Protection Act of 2020

For the duration of the COVID-19 public health emergency, the FTC COVID-19 Consumer Protection Act makes it unlawful for any person, partnership, or corporation (as those terms are defined broadly in the act) to engage in a deceptive act or practice in or affecting commerce associated with the treatment, cure, prevention, mitigation, or diagnosis of COVID-19 or a government benefit related to COVID-19.

The first enforcement action authorized by this act took place in April 2021 against a chiropractor who promised vitamin treatments and cures for COVID-19. The act provides that such a violation shall be treated as a violation of a rule defining an unfair or deceptive act or practice prescribed under the FTC Act.

Under the act, the FTC is authorized to prescribe “rules that define with specificity acts or practices which are unfair or deceptive acts or practices in or affecting commerce.” Deceptive practices are defined as involving a material representation, omission, or practice that is “likely to mislead a consumer acting reasonably in the circumstances.” An act or practice is unfair if it “causes or is likely to cause substantial injury to consumers which is not reasonably avoidable by consumers themselves and not outweighed by countervailing benefits to consumers or to competition.”

After an investigation, the FTC may initiate an enforcement action using either an administrative or judicial process if it has “reason to believe” that the law has been violated. Violations of some laws may result in injunctive relief or civil monetary penalties, which are adjusted annually for inflation.

In addition, many states have deceptive and unfair trade laws that can be enforced in regard to the recommendation, sale, or provision of unproven or unapproved COVID-19 treatments, cures, and preventives as well.
 

Conclusion

It is difficult even for intelligent, well-intentioned physicians to know precisely what to believe and what to advocate for in the middle of a pandemic. It seems as though new reports and recommendations for preventing and treating COVID-19 are surfacing on a weekly basis. By far, the safest approach for any medical clinician to take is to advocate for positions that are generally accepted in the medical and scientific community at the time advice is given.

Mr. Whitelaw disclosed no relevant financial relationships. Ms. Janeway disclosed various associations with the Michigan Association for Healthcare Quality and the Greater Houston Society for Healthcare Risk Management. A version of this article first appeared on Medscape.com.

The emergence of COVID-19 has given the medical world a bewildering array of prevention and treatment protocols. Some physicians are advocating treatments that have not been validated by sound scientific studies. This has already led to licensing issues and other disciplinary actions being taken against physicians, pharmacies, and other health care providers across the country.

Kuzma/istockphoto

Medical professionals try their very best to give sound advice to patients. A medical license does not, however, confer immunity from being misled.

The supporting “science” for alternative prevention and treatments may look legitimate, but these claims are often based on anecdotal evidence. Some studies involve small populations, some are meta-analyses of several small or single-case studies, and others are not properly designed, interpreted, or executed in line with U.S. research and requirements. Yet others have been conducted only in nonhuman analogues, such as frogs or mice.

Many people are refusing a vaccine that has been proven to be relatively safe and effective in numerous repeated and validated studies in the best medical centers across the globe – all in favor of less validated alternatives. Well-intentioned medical professionals may be tempted to promote the information and products featured on websites that advocate for unproven products and protocols. This can have serious legal consequences.
 

The crux of the issue

This is not a question of a physician’s first amendment rights. Nor is it a question of advocating for a scientifically valid minority medical opinion. The point of this article is that promoting unproven products, preventives, treatments, and cures can have dire consequences for licensed medical professionals.

On July 29, 2021, the Federation of State Medical Boards’ Board of Directors released a statement in response to a dramatic increase in the dissemination of COVID-19 vaccine misinformation and disinformation by physicians and other health care professionals on social media platforms, online, and in the media. The statement reads as follows:

“Physicians who generate and spread COVID-19 vaccine misinformation or disinformation are risking disciplinary action by state medical boards, including the suspension or revocation of their medical license. Due to their specialized knowledge and training, licensed physicians possess a high degree of public trust and therefore have a powerful platform in society, whether they recognize it or not. They also have an ethical and professional responsibility to practice medicine in the best interests of their patients and must share information that is factual, scientifically grounded, and consensus-driven for the betterment of public health. Spreading inaccurate COVID-19 vaccine information contradicts that responsibility, threatens to further erode public trust in the medical profession, and puts all patients at risk.”

 

What are the legal consequences?

Medical malpractice

The first consequence to consider is professional liability or medical malpractice. This applies if a patient claims harm as a result of the health care practitioner’s recommendation of an unproven treatment, product, or protocol. For example, strongly discouraging vaccination can result in a wrongful death claim if the patient follows the doctor’s advice, chooses not to vaccinate, contracts COVID-19, and does not recover. Recommending or providing unproven approaches and unapproved treatments is arguably a violation of the standard of care.

The standard of care is grounded in evidence-based medicine: It is commonly defined as the degree of care and skill that would be used by the average physician, who is practicing in his or her relevant specialty, under the same or similar circumstances, given the generally accepted medical knowledge at the time in question.

By way of example, one can see why inhaling peroxide, drinking bleach, or even taking Food and Drug Administration–approved medications that have little or no proven efficacy in treating or preventing COVID-19 is not what the average physician would advocate for under the same or similar circumstances, considering available and commonly accepted medical knowledge. Recommending or providing such treatments can be a breach of the standard of care and can form the basis of a medical malpractice action if, in fact, compensable harm has occurred.

In addition, recommending unproven and unapproved COVID-19 preventives and treatments without appropriate informed consent from patients is arguably also a breach of the standard of care. The claim would be that the patient has not been appropriately informed of the all the known benefits, risks, costs, and other legally required information such as proven efficacy and reasonably available alternatives.

In any event, physicians can rest assured that if a patient is harmed as a result of any of these situations, they’ll probably be answering to someone in the legal system.
 

Professional licensing action

Regardless of whether there is a medical malpractice action, there is still the potential for a patient complaint to be filed with the state licensing authority on the basis of the same facts and grounds. This can result in an investigation or an administrative complaint against the license of the health care provider.

This is not a mere potential risk. Licensing investigations are underway across the country. Disciplinary licensing actions have already taken place. For example, a Washington Medical Commission panel suspended the license of a physician assistant (PA) on Oct. 12, 2021, after an allegation that his treatment of COVID-19 patients fell below the standard of care. The PA allegedly began a public campaign promoting ivermectin as a curative agent for COVID-19 and prescribed it without adequate examination to at least one person, with no evidence from reliable clinical studies that establish its efficacy in preventing or treating COVID-19.

In licensing claims, alleged violations of failing to comply with the standard of care are usually asserted. These claims may also cite violations of other state statutes that encompass such concepts as negligence; breach of the duty of due care; incompetence; lack of good moral character; and lack of ability to serve the public in a fair, honest, and open manner. A licensing complaint may include alleged violations of statutes that address prescribing protocols, reckless endangerment, failure to supervise, and other issues.

The filing of an administrative complaint is a different animal from a medical malpractice action – they are not even in the same system or branch of government. The focus is not just about what happened to the one patient who complained; it is about protection of the public.

The states’ power to put a clinician on probation, condition, limit, suspend, or revoke the clinician’s license, as well as issue other sanctions such as physician monitoring and fines), is profound. The discipline imposed can upend a clinician’s career and potentially end it entirely.

Administrative discipline determinations are usually available to the public and are required to be reported to all employers (current and future). These discipline determinations are also sent to the National Practitioner Data Bank, other professional clearinghouse organizations (such as the Federation of State Medical Boards), state offices, professional liability insurers, payers with whom the clinician contracts, accreditation and certification organizations, and the clinician’s patients.

Discipline determinations must be promptly reported to licensing agencies in other states where the clinician holds a license, and often results in “sister state” actions because discipline was issued against the clinician in another state. It must be disclosed every time a clinician applies for hospital privileges or new employment. It can result in de-participation from health care insurance programs and can affect board certification, recertification, or accreditation for care programs in which the clinician participates.

In sum, licensing actions can be much worse than medical malpractice judgments and can have longer-term consequences.
 

 

 

Peer review and affected privileges

Recommending, promoting, and providing unapproved or unproven treatments, cures, or preventives to patients may violate hospital/health system, practice group, or surgical center bylaws. This can trigger the peer review process, which serves to improve patient safety and the quality of care.

The peer review process may be commenced because of a concern about the clinician’s compliance with the standard of care; potential patient safety issues; ethical issues; and the clinician’s stability, credibility, or professional competence. Any hospital disciplinary penalty is generally reported to state licensing authorities, which can trigger a licensing investigation. If clinical privileges are affected for a period of more than 30 days, the organization must report the situation to the National Practitioner Data Bank.
 

Criminal charges

Depending on the facts, a physician or other health care professional could be charged with reckless endangerment, criminal negligence, or manslaughter. If the clinician was assisting someone else who profited from that clinician’s actions, then we can look to a variety of potential federal and state fraud charges as well.

Conviction of a fraud-related felony may also lead to federal health care program and Centers for Medicare & Medicaid Services (CMS) exclusion for several years, and then CMS preclusion that can be imposed for years beyond the conclusion of the statutorily required exclusion.
 

Breach of contract

Some practice groups or other organizational employers have provisions in employment contracts that treat discipline for this type of conduct as a breach of contract. Because of this, the clinician committing breach may be subject to liquidated damages clauses, forfeiture of monies (such as bonuses or other incentives or rewards), termination of employment, forced withdrawal from ownership status, and being sued for breach of contract to recover damages.

Reputation/credibility damage and the attendant consequences

In regard to hospitals and health care system practice groups, another risk is the loss of referrals and revenue. Local media may air or publish exposés. Such stories may widely publicize the media’s version of the facts – true or not. This can cause immediate reputation and credibility damage within the community and may adversely affect a clinician’s patient base. Any information that is publicly broadcast might attract the attention of licensing and law enforcement authorities and taint potential jurors.

Hospitals and health care systems may pull privileges; post on websites; make official statements about the termination of affiliation; or denounce the clinician’s behavior, conduct, and beliefs as being inconsistent with quality care and patient safety. This causes further damage to a physician’s reputation and credibility.

In a group practice, accusations of this sort, licensing discipline, medical malpractice liability, investigations, loss of privileges, and the other sequelae of this conduct can force the withdrawal of the clinician as a member or shareholder in multiprovider groups. Adverse effects on the financial bottom line, patient referrals, and patient volume and bad press are often the basis for voting a clinician out.
 

Violation of the COVID-19 Consumer Protection Act of 2020

For the duration of the COVID-19 public health emergency, the FTC COVID-19 Consumer Protection Act makes it unlawful for any person, partnership, or corporation (as those terms are defined broadly in the act) to engage in a deceptive act or practice in or affecting commerce associated with the treatment, cure, prevention, mitigation, or diagnosis of COVID-19 or a government benefit related to COVID-19.

The first enforcement action authorized by this act took place in April 2021 against a chiropractor who promised vitamin treatments and cures for COVID-19. The act provides that such a violation shall be treated as a violation of a rule defining an unfair or deceptive act or practice prescribed under the FTC Act.

Under the act, the FTC is authorized to prescribe “rules that define with specificity acts or practices which are unfair or deceptive acts or practices in or affecting commerce.” Deceptive practices are defined as involving a material representation, omission, or practice that is “likely to mislead a consumer acting reasonably in the circumstances.” An act or practice is unfair if it “causes or is likely to cause substantial injury to consumers which is not reasonably avoidable by consumers themselves and not outweighed by countervailing benefits to consumers or to competition.”

After an investigation, the FTC may initiate an enforcement action using either an administrative or judicial process if it has “reason to believe” that the law has been violated. Violations of some laws may result in injunctive relief or civil monetary penalties, which are adjusted annually for inflation.

In addition, many states have deceptive and unfair trade laws that can be enforced in regard to the recommendation, sale, or provision of unproven or unapproved COVID-19 treatments, cures, and preventives as well.
 

Conclusion

It is difficult even for intelligent, well-intentioned physicians to know precisely what to believe and what to advocate for in the middle of a pandemic. It seems as though new reports and recommendations for preventing and treating COVID-19 are surfacing on a weekly basis. By far, the safest approach for any medical clinician to take is to advocate for positions that are generally accepted in the medical and scientific community at the time advice is given.

Mr. Whitelaw disclosed no relevant financial relationships. Ms. Janeway disclosed various associations with the Michigan Association for Healthcare Quality and the Greater Houston Society for Healthcare Risk Management. A version of this article first appeared on Medscape.com.

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Telemedicine, triaging, remote monitoring top list of COVID-era innovations in oncology

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When the Winship Cancer Institute at Emory University, Atlanta, faced off against the pandemic in the spring of 2020, it opened a COVID urgent care clinic for Winship oncology patients who had a confirmed or suspected case of COVID, symptoms or a higher risk for the virus. The urgent care clinic, located in a relatively isolated bay of an infusion center, facilitated segregating COVID-suspected patients from other cancer patients while waiting for their polymerase chain reaction test results to show if they were COVID positive.

A strict triage system was also employed to make sure that the right patients were coming in to the new clinic and not those who either could be managed safely at home or were clinically unstable and belonged in the hospital, said Caleb Raine, PA-C, an oncology physician assistant and bone marrow transplant specialist at Winship. Mr. Raine, who manages the COVID urgent care clinic, shared his experience of “innovations worth keeping” from the pandemic for oncology practices during a panel discussion at the Journal of the Advanced Practitioner in Oncology annual conference, held online Oct. 7.

Telephonic triage was conducted by advanced practice providers (APPs) or nurses using an algorithm Mr. Raine developed incorporating COVID exposure with symptoms such as fever or loss of taste or smell. In order to promote consistency in admissions, he made the final decisions about which patients were brought into the clinic for evaluations, services such as supportive care or infusions, or to address cancer symptoms.

Mr. Raine said the triage process helped to enhance communication with other clinical teams at Winship. He hopes to preserve a strict approach to triaging in future program development, including a 14-bed immediate care center, projected to open next spring, building on experience with the COVID urgent care center. It will offer services similar to a day hospital for cancer patients but be open 24 hours with more capabilities than urgent care. It will target those with emergent needs or who otherwise might require a trip to the ED and provide care for those recently discharged from the hospital in need of follow-up.
 

Remote monitoring

Another conference speaker, Aaron Begue, MS, RN, CNP, vice president for advanced practice providers at Memorial Sloan Kettering Cancer Center in New York, described a pandemic telemedicine intervention for cancer patients implemented by MSKCC during the pandemic. Prior to in-person contact with the care team, patients were asked to complete a questionnaire on their symptoms using MSKCC’s secure online patient portal, MyMSK.

If symptom alerts reached a critical, color-coded threshold, it triggered a nurse or APP from MSKCC to contact the patient at home, typically by phone. APPs also did remote monitoring, including uploaded data from portable home pulse oximeters. A similar symptom tracker was later adapted for monitoring cancer symptoms.

Some APPs took turns working from their own home collecting data needed for inpatient visits and uploading it into the medical record. This helped to deploy clinical teams more efficiently and accommodate some staff who were at high risk of infection because of existing health conditions or quarantined for positive test results.

“We were able to flex our staffing,” Mr. Begue said. Even spending a day staffing a vaccination clinic could provide a break from the intensity of COVID care on the front lines. “All of us are still trying to figure out how to manage staff stress and burnout,” he added, but flexible scheduling seems to be an important strategy.

Early on, things like the crowds coming out in the evening to cheer for New York’s health care workers had a big impact for staff, showing the community’s support. “Later, when public schools were shut down, we worked with two of them to use their outdoor play areas for staff respite – places to sit down outside undisturbed and relax,” he said.

At the height of the COVID surge in New York, telemedicine was an essential component of care, but when it started to recede, Mr. Begue found that a lot of patients wanted in-person visits again. “We had assumed that telemedicine would be the wave of the future and cancer patients would love it,” he said. “We still do thousands of telemedicine visits, but they are no longer the majority.”

MSKCC also does remote telemonitoring visits with patients who live in other states but want to come to New York for surgeries or other procedures or yearly checkups at the hospital. But the logistical headaches of practicing telemedicine across state lines include trying to reconcile varying requirements for medical licensing.

Mr. Begue hopes in the future that some of these state requirements could be relaxed, which might also make it easier to enroll more people from across the country in clinical trials and encourage more collaboration between cancer centers.

“COVID taught us we have to be more forward thinking and prepared for crises,” Mr. Raine said. “In the future we need to be ready for when – not if – the next crisis comes along – although we’re not out of this one yet.”

Mr. Raine and Mr. Begue did not report any disclosures.

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When the Winship Cancer Institute at Emory University, Atlanta, faced off against the pandemic in the spring of 2020, it opened a COVID urgent care clinic for Winship oncology patients who had a confirmed or suspected case of COVID, symptoms or a higher risk for the virus. The urgent care clinic, located in a relatively isolated bay of an infusion center, facilitated segregating COVID-suspected patients from other cancer patients while waiting for their polymerase chain reaction test results to show if they were COVID positive.

A strict triage system was also employed to make sure that the right patients were coming in to the new clinic and not those who either could be managed safely at home or were clinically unstable and belonged in the hospital, said Caleb Raine, PA-C, an oncology physician assistant and bone marrow transplant specialist at Winship. Mr. Raine, who manages the COVID urgent care clinic, shared his experience of “innovations worth keeping” from the pandemic for oncology practices during a panel discussion at the Journal of the Advanced Practitioner in Oncology annual conference, held online Oct. 7.

Telephonic triage was conducted by advanced practice providers (APPs) or nurses using an algorithm Mr. Raine developed incorporating COVID exposure with symptoms such as fever or loss of taste or smell. In order to promote consistency in admissions, he made the final decisions about which patients were brought into the clinic for evaluations, services such as supportive care or infusions, or to address cancer symptoms.

Mr. Raine said the triage process helped to enhance communication with other clinical teams at Winship. He hopes to preserve a strict approach to triaging in future program development, including a 14-bed immediate care center, projected to open next spring, building on experience with the COVID urgent care center. It will offer services similar to a day hospital for cancer patients but be open 24 hours with more capabilities than urgent care. It will target those with emergent needs or who otherwise might require a trip to the ED and provide care for those recently discharged from the hospital in need of follow-up.
 

Remote monitoring

Another conference speaker, Aaron Begue, MS, RN, CNP, vice president for advanced practice providers at Memorial Sloan Kettering Cancer Center in New York, described a pandemic telemedicine intervention for cancer patients implemented by MSKCC during the pandemic. Prior to in-person contact with the care team, patients were asked to complete a questionnaire on their symptoms using MSKCC’s secure online patient portal, MyMSK.

If symptom alerts reached a critical, color-coded threshold, it triggered a nurse or APP from MSKCC to contact the patient at home, typically by phone. APPs also did remote monitoring, including uploaded data from portable home pulse oximeters. A similar symptom tracker was later adapted for monitoring cancer symptoms.

Some APPs took turns working from their own home collecting data needed for inpatient visits and uploading it into the medical record. This helped to deploy clinical teams more efficiently and accommodate some staff who were at high risk of infection because of existing health conditions or quarantined for positive test results.

“We were able to flex our staffing,” Mr. Begue said. Even spending a day staffing a vaccination clinic could provide a break from the intensity of COVID care on the front lines. “All of us are still trying to figure out how to manage staff stress and burnout,” he added, but flexible scheduling seems to be an important strategy.

Early on, things like the crowds coming out in the evening to cheer for New York’s health care workers had a big impact for staff, showing the community’s support. “Later, when public schools were shut down, we worked with two of them to use their outdoor play areas for staff respite – places to sit down outside undisturbed and relax,” he said.

At the height of the COVID surge in New York, telemedicine was an essential component of care, but when it started to recede, Mr. Begue found that a lot of patients wanted in-person visits again. “We had assumed that telemedicine would be the wave of the future and cancer patients would love it,” he said. “We still do thousands of telemedicine visits, but they are no longer the majority.”

MSKCC also does remote telemonitoring visits with patients who live in other states but want to come to New York for surgeries or other procedures or yearly checkups at the hospital. But the logistical headaches of practicing telemedicine across state lines include trying to reconcile varying requirements for medical licensing.

Mr. Begue hopes in the future that some of these state requirements could be relaxed, which might also make it easier to enroll more people from across the country in clinical trials and encourage more collaboration between cancer centers.

“COVID taught us we have to be more forward thinking and prepared for crises,” Mr. Raine said. “In the future we need to be ready for when – not if – the next crisis comes along – although we’re not out of this one yet.”

Mr. Raine and Mr. Begue did not report any disclosures.

When the Winship Cancer Institute at Emory University, Atlanta, faced off against the pandemic in the spring of 2020, it opened a COVID urgent care clinic for Winship oncology patients who had a confirmed or suspected case of COVID, symptoms or a higher risk for the virus. The urgent care clinic, located in a relatively isolated bay of an infusion center, facilitated segregating COVID-suspected patients from other cancer patients while waiting for their polymerase chain reaction test results to show if they were COVID positive.

A strict triage system was also employed to make sure that the right patients were coming in to the new clinic and not those who either could be managed safely at home or were clinically unstable and belonged in the hospital, said Caleb Raine, PA-C, an oncology physician assistant and bone marrow transplant specialist at Winship. Mr. Raine, who manages the COVID urgent care clinic, shared his experience of “innovations worth keeping” from the pandemic for oncology practices during a panel discussion at the Journal of the Advanced Practitioner in Oncology annual conference, held online Oct. 7.

Telephonic triage was conducted by advanced practice providers (APPs) or nurses using an algorithm Mr. Raine developed incorporating COVID exposure with symptoms such as fever or loss of taste or smell. In order to promote consistency in admissions, he made the final decisions about which patients were brought into the clinic for evaluations, services such as supportive care or infusions, or to address cancer symptoms.

Mr. Raine said the triage process helped to enhance communication with other clinical teams at Winship. He hopes to preserve a strict approach to triaging in future program development, including a 14-bed immediate care center, projected to open next spring, building on experience with the COVID urgent care center. It will offer services similar to a day hospital for cancer patients but be open 24 hours with more capabilities than urgent care. It will target those with emergent needs or who otherwise might require a trip to the ED and provide care for those recently discharged from the hospital in need of follow-up.
 

Remote monitoring

Another conference speaker, Aaron Begue, MS, RN, CNP, vice president for advanced practice providers at Memorial Sloan Kettering Cancer Center in New York, described a pandemic telemedicine intervention for cancer patients implemented by MSKCC during the pandemic. Prior to in-person contact with the care team, patients were asked to complete a questionnaire on their symptoms using MSKCC’s secure online patient portal, MyMSK.

If symptom alerts reached a critical, color-coded threshold, it triggered a nurse or APP from MSKCC to contact the patient at home, typically by phone. APPs also did remote monitoring, including uploaded data from portable home pulse oximeters. A similar symptom tracker was later adapted for monitoring cancer symptoms.

Some APPs took turns working from their own home collecting data needed for inpatient visits and uploading it into the medical record. This helped to deploy clinical teams more efficiently and accommodate some staff who were at high risk of infection because of existing health conditions or quarantined for positive test results.

“We were able to flex our staffing,” Mr. Begue said. Even spending a day staffing a vaccination clinic could provide a break from the intensity of COVID care on the front lines. “All of us are still trying to figure out how to manage staff stress and burnout,” he added, but flexible scheduling seems to be an important strategy.

Early on, things like the crowds coming out in the evening to cheer for New York’s health care workers had a big impact for staff, showing the community’s support. “Later, when public schools were shut down, we worked with two of them to use their outdoor play areas for staff respite – places to sit down outside undisturbed and relax,” he said.

At the height of the COVID surge in New York, telemedicine was an essential component of care, but when it started to recede, Mr. Begue found that a lot of patients wanted in-person visits again. “We had assumed that telemedicine would be the wave of the future and cancer patients would love it,” he said. “We still do thousands of telemedicine visits, but they are no longer the majority.”

MSKCC also does remote telemonitoring visits with patients who live in other states but want to come to New York for surgeries or other procedures or yearly checkups at the hospital. But the logistical headaches of practicing telemedicine across state lines include trying to reconcile varying requirements for medical licensing.

Mr. Begue hopes in the future that some of these state requirements could be relaxed, which might also make it easier to enroll more people from across the country in clinical trials and encourage more collaboration between cancer centers.

“COVID taught us we have to be more forward thinking and prepared for crises,” Mr. Raine said. “In the future we need to be ready for when – not if – the next crisis comes along – although we’re not out of this one yet.”

Mr. Raine and Mr. Begue did not report any disclosures.

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Successful COVID-19 Surge Management With Monoclonal Antibody Infusion in Emergency Department Patients

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Successful COVID-19 Surge Management With Monoclonal Antibody Infusion in Emergency Department Patients

From the Center for Artificial Intelligence in Diagnostic Medicine, University of California, Irvine, CA (Drs. Chow and Chang, Mazaya Soundara), University of California Irvine School of Medicine, Irvine, CA (Ruchi Desai), Division of Infectious Diseases, University of California, Irvine, CA (Dr. Gohil), and the Department of Medicine and Hospital Medicine Program, University of California, Irvine, CA (Dr. Amin).

Background: The COVID-19 pandemic has placed substantial strain on hospital resources and has been responsible for more than 733 000 deaths in the United States. The US Food and Drug Administration has granted emergency use authorization (EUA) for monoclonal antibody (mAb) therapy in the US for patients with early-stage high-risk COVID-19.

Methods: In this retrospective cohort study, we studied the emergency department (ED) during a massive COVID-19 surge in Orange County, California, from December 4, 2020, to January 29, 2021, as a potential setting for efficient mAb delivery by evaluating the impact of bamlanivimab use in high-risk COVID-19 patients. All patients included in this study had positive results on nucleic acid amplification detection from nasopharyngeal or throat swabs, presented with 1 or more mild or moderate symptom, and met EUA criteria for mAb treatment. The primary outcome analyzed among this cohort of ED patients was overall improvement, which included subsequent ED/hospital visits, inpatient hospitalization, and death related to COVID-19.

Results: We identified 1278 ED patients with COVID-19 not treated with bamlanivimab and 73 patients with COVID-19 treated with bamlanivimab during the treatment period. Of these patients, 239 control patients and 63 treatment patients met EUA criteria. Overall, 7.9% (5/63) of patients receiving bamlanivimab had a subsequent ED/hospital visit, hospitalization, or death compared with 19.2% (46/239) in the control group (P = .03).

Conclusion: Targeting ED patients for mAb treatment may be an effective strategy to prevent progression to severe COVID-19 illness and substantially reduce the composite end point of repeat ED visits, hospitalizations, and deaths, especially for individuals of underserved populations who may not have access to ambulatory care.

Keywords: COVID-19; mAb; bamlanivimab; surge management.

Since December 2019, the novel pathogen SARS-CoV-2 has spread rapidly, culminating in a pandemic that has caused more than 4.9 million deaths worldwide and claimed more than 733 000 lives in the United States.1 The scale of the COVID-19 pandemic has placed an immense strain on hospital resources, including personal protective equipment (PPE), beds, ventilators and personnel.2,3 A previous analysis demonstrated that hospital capacity strain is associated with increased mortality and worsened health outcomes.4 A more recent analysis in light of the COVID-19 pandemic found that strains on critical care capacity were associated with increased COVID-19 intensive care unit (ICU) mortality.5 While more studies are needed to understand the association between hospital resources and COVID-19 mortality, efforts to decrease COVID-19 hospitalizations by early targeted treatment of patients in outpatient and emergency department (ED) settings may help to relieve the burden on hospital personnel and resources and decrease subsequent mortality.

Current therapeutic options focus on inpatient management of patients who progress to acute respiratory illness while patients with mild presentations are managed with outpatient monitoring, even those at high risk for progression. At the moment, only remdesivir, a viral RNA-dependent RNA polymerase inhibitor, has been approved by the US Food and Drug Administration (FDA) for treatment of hospitalized COVID-19 patients.6 However, in November 2020, the FDA granted emergency use authorization (EUA) for monoclonal antibodies (mAbs), monotherapy, and combination therapy in a broad range of early-stage, high-risk patients.7-9 Neutralizing mAbs include bamlanivimab (LY-CoV555), etesevimab (LY-CoV016), sotrovimab (VIR-7831), and casirivimab/imdevimab (REGN-COV2). These anti–spike protein antibodies prevent viral attachment to the human angiotensin-converting enzyme 2 receptor (hACE2) and subsequently prevent viral entry.10 mAb therapy has been shown to be effective in substantially reducing viral load, hospitalizations, and ED visits.11

Despite these promising results, uptake of mAb therapy has been slow, with more than 600 000 available doses remaining unused as of mid-January 2021, despite very high infection rates across the United States.12 In addition to the logistical challenges associated with intravenous (IV) therapy in the ambulatory setting, identifying, notifying, and scheduling appointments for ambulatory patients hamper efficient delivery to high-risk patients and limit access to underserved patients without primary care providers. For patients not treated in the ambulatory setting, the ED may serve as an ideal location for early implementation of mAb treatment in high-risk patients with mild to moderate COVID-19.

The University of California, Irvine (UCI) Medical Center is not only the major premium academic medical center in Orange County, California, but also the primary safety net hospital for vulnerable populations in Orange County. During the surge period from December 2020 through January 2021, we were over 100% capacity and had built an onsite mobile hospital to expand the number of beds available. Given the severity of the impact of COVID-19 on our resources, implementing a strategy to reduce hospital admissions, patient death, and subsequent ED visits was imperative. Our goal was to implement a strategy on the front end through the ED to optimize care for patients and reduce the strain on hospital resources.

We sought to study the ED during this massive surge as a potential setting for efficient mAb delivery by evaluating the impact of bamlanivimab use in high risk COVID-19 patients.

Methods

We conducted a retrospective cohort study (approved by UCI institutional review board) of sequential COVID-19 adult patients who were evaluated and discharged from the ED between December 4, 2020, and January 29, 2021, and received bamlanivimab treatment (cases) compared with a nontreatment group (control) of ED patients.

Using the UCI electronic medical record (EMR) system, we identified 1278 ED patients with COVID-19 not treated with bamlanivimab and 73 patients with COVID-19 treated with bamlanivimab during the months of December 2020 and January 2021. All patients included in this study met the EUA criteria for mAb therapy. According to the Centers for Disease Control and Prevention (CDC), during the period of this study, patients met EUA criteria if they had mild to moderate COVID-19, a positive direct SARS-CoV-2 viral testing, and a high risk for progressing to severe COVID-19 or hospitalization.13 High risk for progressing to severe COVID-19 and/or hospitalization is defined as meeting at least 1 of the following criteria: a body mass index of 35 or higher, chronic kidney disease (CKD), diabetes, immunosuppressive disease, currently receiving immunosuppressive treatment, aged 65 years or older, aged 55 years or older and have cardiovascular disease or hypertension, or chronic obstructive pulmonary disease (COPD)/other chronic respiratory diseases.13 All patients in the ED who met EUA criteria were offered mAb treatment; those who accepted the treatment were included in the treatment group, and those who refused were included in the control group.

 

 

All patients included in this study had positive results on nucleic acid amplification detection from nasopharyngeal or throat swabs and presented with 1 or more mild or moderate symptom, defined as: fever, cough, sore throat, malaise, headache, muscle pain, gastrointestinal symptoms, or shortness of breath. We excluded patients admitted to the hospital on that ED visit and those discharged to hospice. In addition, we excluded patients who presented 2 weeks after symptom onset and those who did not meet EUA criteria. Demographic data (age and gender) and comorbid conditions were obtained by EMR review. Comorbid conditions obtained included diabetes, hypertension, cardiovascular disease, coronary artery disease, CKD/end-stage renal disease (ESRD), COPD, obesity, and immunocompromised status.

Bamlanivimab infusion therapy in the ED followed CDC guidelines. Each patient received 700 mg of bamlanivimab diluted in 0.9% sodium chloride and administered as a single IV infusion. We established protocols to give patients IV immunoglobulin (IVIG) infusions directly in the ED.

The primary outcome analyzed among this cohort of ED patients was overall improvement, which included subsequent ED/hospital visits, inpatient hospitalization, and death related to COVID-19 within 90 days of initial ED visit. Each patient was only counted once. Data analysis and statistical tests were conducted using SPSS statistical software (SPSS Inc). Treatment effects were compared using χ2 test with an α level of 0.05. A t test was used for continuous variables, including age. A P value of less than .05 was considered significant.

Results

We screened a total of 1351 patients with COVID-19. Of these, 1278 patients did not receive treatment with bamlanivimab. Two hundred thirty-nine patients met inclusion criteria and were included in the control group. Seventy-three patients were treated with bamlanivimab in the ED; 63 of these patients met EUA criteria and comprised the treatment group (Figure 1).

Demographic details of the trial groups are provided in Table 1. The median age of the treatment group was 61 years (interquartile range [IQR], 55-73), while the median age of the control group was 57 years (IQR, 48-68). The difference in median age between the treatment and control individuals was significantly different (P = .03). There was no significant difference found in terms of gender between the control and treatment groups (P = .07). In addition, no significant difference was seen among racial and ethnic groups in the control and treatment groups. Comorbidities and demographics of all patients in the treatment and control groups are provided in Table 1. The only comorbidity that was found to be significantly different between the treatment and control groups was CKD/ESRD. Among those treated with bamlanivimab, 20.6% (13/63) had CKD/ESRD compared with 10.5% (25/239) in the control group (P = .02).

 

 

Overall, 7.9% (5/63) of patients receiving bamlanivimab had a subsequent ED/hospital visit, hospitalization, or death compared with 19.2% (46/239) in the control group (P = .03) (Table 2).

While the primary outcome of overall improvement was significantly different between the 2 groups, comparison of the individual components, including subsequent ED visits, hospitalizations, or death, were not significant. No treatment patients were hospitalized, compared with 5.4% (13/239) in the control group (P = .05). In the treatment group, 6.3% (4/63) returned to the ED compared with 12.6% (30/239) of the control group (P = .17). Finally, 1.6% (1/63) of the treatment group had a subsequent death that was due to COVID-19 compared with 1.3% (3/239) in the control group (P = .84) (Figure 2).

Discussion

In this retrospective cohort study, we observed a significant difference in rates of COVID-19 patients requiring repeat ED visits, hospitalizations, and deaths among those who received bamlanivimab compared with those who did not. Our study focused on high-risk patients with mild or moderate COVID-19, a unique subset of individuals who would normally be followed and treated via outpatient monitoring. We propose that treating high-risk patients earlier in their disease process with mAb therapy can have a major impact on overall outcomes, as defined by decreased subsequent hospitalizations, ED visits, and death.

Compared to clinical trials such as BLAZE-1 or REGN-COV2, every patient in this trial had at least 1 high-risk characteristic.9,11 This may explain why a greater proportion of our patients in both the control and treatment groups had subsequent hospitalization, ED visits, and deaths. COVID-19 patients seen in the ED may be a uniquely self-selected population of individuals likely to benefit from mAb therapy since they may be more likely to be sicker, have more comorbidities, or have less readily available primary care access for testing and treatment.14

Despite conducting a thorough literature review, we were unable to find any similar studies describing the ED as an appropriate setting for mAb treatment in patients with COVID-19. Multiple studies have used outpatient clinics as a setting for mAb treatment, and 1 retrospective analysis found that neutralizing mAb treatment in COVID-19 patients in an outpatient setting reduced hospital utilization.15 However, many Americans do not have access to primary care, with 1 study finding that only 75% of Americans had an identified source of primary care in 2015.16 Obstacles to primary care access include disabilities, lack of health insurance, language-related barriers, race/ethnicity, and homelessness.17 Barriers to access for primary care services and timely care make these populations more likely to frequent the ED.17 This makes the ED a unique location for early and targeted treatment of COVID-19 patients with a high risk for progression to severe COVID-19.

 

 

During surge periods in the COVID-19 pandemic, many hospitals met capacity or superseded their capacity for patients, with 4423 hospitals reporting more than 90% of hospital beds occupied and 2591 reporting more than 90% of ICU beds occupied during the peak surge week of January 1, 2021, to January 7, 2021.18 The main goals of lockdowns and masking have been to decrease the transmission of COVID-19 and hopefully flatten the curve to alleviate the burden on hospitals and decrease patient mortality. However, in surge situations when hospitals have already been pushed to their limits, we need to find ways to circumvent these shortages. This was particularly true at our academic medical center during the surge period of December 2020 through January 2021, necessitating the need for an innovative approach to improve patient outcomes and reduce the strain on resources. Utilizing the ED and implementing early treatment strategies with mAbs, especially during a surge crisis, can decrease severity of illness, hospitalizations, and deaths, as demonstrated in our article.

This study had several limitations. First, it is plausible that some ED patients may have gone to a different hospital after discharge from the UCI ED rather than returning to our institution. Given the constraints of using the EMR, we were only able to assess hospitalizations and subsequent ED visits at UCI. Second, there were 2 confounding variables identified when analyzing the demographic differences between the control and treatment group among those who met EUA criteria. The median age among those in the treatment group was greater than those in the control group (P = .03), and the proportion of individuals with CKD/ESRD was also greater in those in the treatment group (P = .02). It is well known that older patients and those with renal disease have higher incidences of morbidity and mortality. Achieving statistically significant differences overall between control and treatment groups despite greater numbers of older individuals and patients with renal disease in the treatment group supports our strategy and the usage of mAb.19,20

Finally, as of April 16, 2021, the FDA revoked EUA for bamlanivimab when administered alone. However, alternative mAb therapies remain available under the EUA, including REGEN-COV (casirivimab and imdevimab), sotrovimab, and the combination therapy of bamlanivimab and etesevimab.21 This decision was made in light of the increased frequency of resistant variants of SARS-CoV-2 with bamlanivimab treatment alone.21 Our study was conducted prior to this announcement. However, as treatment with other mAbs is still permissible, we believe our findings can translate to treatment with mAbs in general. In fact, combination therapy with bamlanivimab and etesevimab has been found to be more effective than monotherapy alone, suggesting that our results may be even more robust with combination mAb therapy.11 Overall, while additional studies are needed with larger sample sizes and combination mAb treatment to fully elucidate the impact of administering mAb treatment in the ED, our results suggest that targeting ED patients for mAb treatment may be an effective strategy to prevent the composite end point of repeat ED visits, hospitalizations, or deaths.

Conclusion

Targeting ED patients for mAb treatment may be an effective strategy to prevent progression to severe COVID-19 illness and substantially reduce the composite end point of repeat ED visits, hospitalizations, and deaths, especially for individuals of underserved populations who may not have access to ambulatory care.

Corresponding author: Alpesh Amin, MD, MBA, Department of Medicine and Hospital Medicine Program, University of California, Irvine, 333 City Tower West, Ste 500, Orange, CA 92868; [email protected].

Financial disclosures: This manuscript was generously supported by multiple donors, including the Mehra Family, the Yang Family, and the Chao Family. Dr. Amin reported serving as Principal Investigator or Co-Investigator of clinical trials sponsored by NIH/NIAID, NeuroRX Pharma, Pulmotect, Blade Therapeutics, Novartis, Takeda, Humanigen, Eli Lilly, PTC Therapeutics, OctaPharma, Fulcrum Therapeutics, and Alexion, unrelated to the present study. He has served as speaker and/or consultant for BMS, Pfizer, BI, Portola, Sunovion, Mylan, Salix, Alexion, AstraZeneca, Novartis, Nabriva, Paratek, Bayer, Tetraphase, Achaogen La Jolla, Ferring, Seres, Millennium, PeraHealth, HeartRite, Aseptiscope, and Sprightly, unrelated to the present study.

References

1. Global map. Johns Hopkins University & Medicine Coronavirus Resource Center. Updated November 9, 2021. Accessed November 9, 2021. https://coronavirus.jhu.edu/map.html

2. Truog RD, Mitchell C, Daley GQ. The toughest triage — allocating ventilators in a pandemic. N Engl J Med. 2020;382(21):1973-1975. doi:10.1056/NEJMp2005689

3. Cavallo JJ, Donoho DA, Forman HP. Hospital capacity and operations in the coronavirus disease 2019 (COVID-19) pandemic—planning for the Nth patient. JAMA Health Forum. 2020;1(3):e200345. doi:10.1001/jamahealthforum.2020.0345

4. Eriksson CO, Stoner RC, Eden KB, et al. The association between hospital capacity strain and inpatient outcomes in highly developed countries: a systematic review. J Gen Intern Med. 2017;32(6):686-696. doi:10.1007/s11606-016-3936-3

5. Bravata DM, Perkins AJ, Myers LJ, et al. Association of intensive care unit patient load and demand with mortality rates in US Department of Veterans Affairs hospitals during the COVID-19 pandemic. JAMA Netw Open. 2021;4(1):e2034266. doi:10.1001/jamanetworkopen.2020.34266

6. Beigel JH, Tomashek KM, Dodd LE, et al. Remdesivir for the treatment of Covid-19 - final report. N Engl J Med. 2020;383(19);1813-1826. doi:10.1056/NEJMoa2007764

7. Coronavirus (COVID-19) update: FDA authorizes monoclonal antibody for treatment of COVID-19. US Food & Drug Administration. November 9, 2020. Accessed November 9, 2021. https://www.fda.gov/news-events/press-announcements/coronavirus-covid-19-update-fda-authorizes-monoclonal-antibody-treatment-covid-19

8. Chen P, Nirula A, Heller B, et al. SARS-CoV-2 neutralizing antibody LY-CoV555 in outpatients with Covid-19. N Engl J Med. 2021;384(3):229-237. doi:10.1056/NEJMoa2029849

9. Weinreich DM, Sivapalasingam S, Norton T, et al. REGN-COV2, a neutralizing antibody cocktail, in outpatients with Covid-19. N Engl J Med. 2021;384(3):238-251. doi:10.1056/NEJMoa2035002

10. Chen X, Li R, Pan Z, et al. Human monoclonal antibodies block the binding of SARS-CoV-2 spike protein to angiotensin converting enzyme 2 receptor. Cell Mol Immunol. 2020;17(6):647-649. doi:10.1038/s41423-020-0426-7

11. Gottlieb RL, Nirula A, Chen P, et al. Effect of bamlanivimab as monotherapy or in combination with etesevimab on viral load in patients with mild to moderate COVID-19: a randomized clinical trial. JAMA. 2021;325(7):632-644. doi:10.1001/jama.2021.0202

12. Toy S, Walker J, Evans M. Highly touted monoclonal antibody therapies sit unused in hospitals The Wall Street Journal. December 27, 2020. Accessed November 9, 2021. https://www.wsj.com/articles/highly-touted-monoclonal-antibody-therapies-sit-unused-in-hospitals-11609087364

13. Anti-SARS-CoV-2 monoclonal antibodies. NIH COVID-19 Treatment Guidelines. Updated October 19, 2021. Accessed November 9, 2021. https://www.covid19treatmentguidelines.nih.gov/anti-sars-cov-2-antibody-products/anti-sars-cov-2-monoclonal-antibodies/

14. Langellier BA. Policy recommendations to address high risk of COVID-19 among immigrants. Am J Public Health. 2020;110(8):1137-1139. doi:10.2105/AJPH.2020.305792

15. Verderese J P, Stepanova M, Lam B, et al. Neutralizing monoclonal antibody treatment reduces hospitalization for mild and moderate COVID-19: a real-world experience. Clin Infect Dis. 2021;ciab579. doi:10.1093/cid/ciab579

16. Levine DM, Linder JA, Landon BE. Characteristics of Americans with primary care and changes over time, 2002-2015. JAMA Intern Med. 2020;180(3):463-466. doi:10.1001/jamainternmed.2019.6282

17. Rust G, Ye J, Daniels E, et al. Practical barriers to timely primary care access: impact on adult use of emergency department services. Arch Intern Med. 2008;168(15):1705-1710. doi:10.1001/archinte.168.15.1705

18. COVID-19 Hospitalization Tracking Project: analysis of HHS data. University of Minnesota. Carlson School of Management. Accessed November 9, 2021. https://carlsonschool.umn.edu/mili-misrc-covid19-tracking-project

19. Zare˛bska-Michaluk D, Jaroszewicz J, Rogalska M, et al. Impact of kidney failure on the severity of COVID-19. J Clin Med. 2021;10(9):2042. doi:10.3390/jcm10092042

20. Shahid Z, Kalayanamitra R, McClafferty B, et al. COVID‐19 and older adults: what we know. J Am Geriatr Soc. 2020;68(5):926-929. doi:10.1111/jgs.16472

21. Coronavirus (COVID-19) update: FDA revokes emergency use authorization for monoclonal antibody bamlanivimab. US Food & Drug Administration. April 16, 2021. Accessed November 9, 2021. https://www.fda.gov/news-events/press-announcements/coronavirus-covid-19-update-fda-revokes-emergency-use-authorization-monoclonal-antibody-bamlanivimab

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From the Center for Artificial Intelligence in Diagnostic Medicine, University of California, Irvine, CA (Drs. Chow and Chang, Mazaya Soundara), University of California Irvine School of Medicine, Irvine, CA (Ruchi Desai), Division of Infectious Diseases, University of California, Irvine, CA (Dr. Gohil), and the Department of Medicine and Hospital Medicine Program, University of California, Irvine, CA (Dr. Amin).

Background: The COVID-19 pandemic has placed substantial strain on hospital resources and has been responsible for more than 733 000 deaths in the United States. The US Food and Drug Administration has granted emergency use authorization (EUA) for monoclonal antibody (mAb) therapy in the US for patients with early-stage high-risk COVID-19.

Methods: In this retrospective cohort study, we studied the emergency department (ED) during a massive COVID-19 surge in Orange County, California, from December 4, 2020, to January 29, 2021, as a potential setting for efficient mAb delivery by evaluating the impact of bamlanivimab use in high-risk COVID-19 patients. All patients included in this study had positive results on nucleic acid amplification detection from nasopharyngeal or throat swabs, presented with 1 or more mild or moderate symptom, and met EUA criteria for mAb treatment. The primary outcome analyzed among this cohort of ED patients was overall improvement, which included subsequent ED/hospital visits, inpatient hospitalization, and death related to COVID-19.

Results: We identified 1278 ED patients with COVID-19 not treated with bamlanivimab and 73 patients with COVID-19 treated with bamlanivimab during the treatment period. Of these patients, 239 control patients and 63 treatment patients met EUA criteria. Overall, 7.9% (5/63) of patients receiving bamlanivimab had a subsequent ED/hospital visit, hospitalization, or death compared with 19.2% (46/239) in the control group (P = .03).

Conclusion: Targeting ED patients for mAb treatment may be an effective strategy to prevent progression to severe COVID-19 illness and substantially reduce the composite end point of repeat ED visits, hospitalizations, and deaths, especially for individuals of underserved populations who may not have access to ambulatory care.

Keywords: COVID-19; mAb; bamlanivimab; surge management.

Since December 2019, the novel pathogen SARS-CoV-2 has spread rapidly, culminating in a pandemic that has caused more than 4.9 million deaths worldwide and claimed more than 733 000 lives in the United States.1 The scale of the COVID-19 pandemic has placed an immense strain on hospital resources, including personal protective equipment (PPE), beds, ventilators and personnel.2,3 A previous analysis demonstrated that hospital capacity strain is associated with increased mortality and worsened health outcomes.4 A more recent analysis in light of the COVID-19 pandemic found that strains on critical care capacity were associated with increased COVID-19 intensive care unit (ICU) mortality.5 While more studies are needed to understand the association between hospital resources and COVID-19 mortality, efforts to decrease COVID-19 hospitalizations by early targeted treatment of patients in outpatient and emergency department (ED) settings may help to relieve the burden on hospital personnel and resources and decrease subsequent mortality.

Current therapeutic options focus on inpatient management of patients who progress to acute respiratory illness while patients with mild presentations are managed with outpatient monitoring, even those at high risk for progression. At the moment, only remdesivir, a viral RNA-dependent RNA polymerase inhibitor, has been approved by the US Food and Drug Administration (FDA) for treatment of hospitalized COVID-19 patients.6 However, in November 2020, the FDA granted emergency use authorization (EUA) for monoclonal antibodies (mAbs), monotherapy, and combination therapy in a broad range of early-stage, high-risk patients.7-9 Neutralizing mAbs include bamlanivimab (LY-CoV555), etesevimab (LY-CoV016), sotrovimab (VIR-7831), and casirivimab/imdevimab (REGN-COV2). These anti–spike protein antibodies prevent viral attachment to the human angiotensin-converting enzyme 2 receptor (hACE2) and subsequently prevent viral entry.10 mAb therapy has been shown to be effective in substantially reducing viral load, hospitalizations, and ED visits.11

Despite these promising results, uptake of mAb therapy has been slow, with more than 600 000 available doses remaining unused as of mid-January 2021, despite very high infection rates across the United States.12 In addition to the logistical challenges associated with intravenous (IV) therapy in the ambulatory setting, identifying, notifying, and scheduling appointments for ambulatory patients hamper efficient delivery to high-risk patients and limit access to underserved patients without primary care providers. For patients not treated in the ambulatory setting, the ED may serve as an ideal location for early implementation of mAb treatment in high-risk patients with mild to moderate COVID-19.

The University of California, Irvine (UCI) Medical Center is not only the major premium academic medical center in Orange County, California, but also the primary safety net hospital for vulnerable populations in Orange County. During the surge period from December 2020 through January 2021, we were over 100% capacity and had built an onsite mobile hospital to expand the number of beds available. Given the severity of the impact of COVID-19 on our resources, implementing a strategy to reduce hospital admissions, patient death, and subsequent ED visits was imperative. Our goal was to implement a strategy on the front end through the ED to optimize care for patients and reduce the strain on hospital resources.

We sought to study the ED during this massive surge as a potential setting for efficient mAb delivery by evaluating the impact of bamlanivimab use in high risk COVID-19 patients.

Methods

We conducted a retrospective cohort study (approved by UCI institutional review board) of sequential COVID-19 adult patients who were evaluated and discharged from the ED between December 4, 2020, and January 29, 2021, and received bamlanivimab treatment (cases) compared with a nontreatment group (control) of ED patients.

Using the UCI electronic medical record (EMR) system, we identified 1278 ED patients with COVID-19 not treated with bamlanivimab and 73 patients with COVID-19 treated with bamlanivimab during the months of December 2020 and January 2021. All patients included in this study met the EUA criteria for mAb therapy. According to the Centers for Disease Control and Prevention (CDC), during the period of this study, patients met EUA criteria if they had mild to moderate COVID-19, a positive direct SARS-CoV-2 viral testing, and a high risk for progressing to severe COVID-19 or hospitalization.13 High risk for progressing to severe COVID-19 and/or hospitalization is defined as meeting at least 1 of the following criteria: a body mass index of 35 or higher, chronic kidney disease (CKD), diabetes, immunosuppressive disease, currently receiving immunosuppressive treatment, aged 65 years or older, aged 55 years or older and have cardiovascular disease or hypertension, or chronic obstructive pulmonary disease (COPD)/other chronic respiratory diseases.13 All patients in the ED who met EUA criteria were offered mAb treatment; those who accepted the treatment were included in the treatment group, and those who refused were included in the control group.

 

 

All patients included in this study had positive results on nucleic acid amplification detection from nasopharyngeal or throat swabs and presented with 1 or more mild or moderate symptom, defined as: fever, cough, sore throat, malaise, headache, muscle pain, gastrointestinal symptoms, or shortness of breath. We excluded patients admitted to the hospital on that ED visit and those discharged to hospice. In addition, we excluded patients who presented 2 weeks after symptom onset and those who did not meet EUA criteria. Demographic data (age and gender) and comorbid conditions were obtained by EMR review. Comorbid conditions obtained included diabetes, hypertension, cardiovascular disease, coronary artery disease, CKD/end-stage renal disease (ESRD), COPD, obesity, and immunocompromised status.

Bamlanivimab infusion therapy in the ED followed CDC guidelines. Each patient received 700 mg of bamlanivimab diluted in 0.9% sodium chloride and administered as a single IV infusion. We established protocols to give patients IV immunoglobulin (IVIG) infusions directly in the ED.

The primary outcome analyzed among this cohort of ED patients was overall improvement, which included subsequent ED/hospital visits, inpatient hospitalization, and death related to COVID-19 within 90 days of initial ED visit. Each patient was only counted once. Data analysis and statistical tests were conducted using SPSS statistical software (SPSS Inc). Treatment effects were compared using χ2 test with an α level of 0.05. A t test was used for continuous variables, including age. A P value of less than .05 was considered significant.

Results

We screened a total of 1351 patients with COVID-19. Of these, 1278 patients did not receive treatment with bamlanivimab. Two hundred thirty-nine patients met inclusion criteria and were included in the control group. Seventy-three patients were treated with bamlanivimab in the ED; 63 of these patients met EUA criteria and comprised the treatment group (Figure 1).

Demographic details of the trial groups are provided in Table 1. The median age of the treatment group was 61 years (interquartile range [IQR], 55-73), while the median age of the control group was 57 years (IQR, 48-68). The difference in median age between the treatment and control individuals was significantly different (P = .03). There was no significant difference found in terms of gender between the control and treatment groups (P = .07). In addition, no significant difference was seen among racial and ethnic groups in the control and treatment groups. Comorbidities and demographics of all patients in the treatment and control groups are provided in Table 1. The only comorbidity that was found to be significantly different between the treatment and control groups was CKD/ESRD. Among those treated with bamlanivimab, 20.6% (13/63) had CKD/ESRD compared with 10.5% (25/239) in the control group (P = .02).

 

 

Overall, 7.9% (5/63) of patients receiving bamlanivimab had a subsequent ED/hospital visit, hospitalization, or death compared with 19.2% (46/239) in the control group (P = .03) (Table 2).

While the primary outcome of overall improvement was significantly different between the 2 groups, comparison of the individual components, including subsequent ED visits, hospitalizations, or death, were not significant. No treatment patients were hospitalized, compared with 5.4% (13/239) in the control group (P = .05). In the treatment group, 6.3% (4/63) returned to the ED compared with 12.6% (30/239) of the control group (P = .17). Finally, 1.6% (1/63) of the treatment group had a subsequent death that was due to COVID-19 compared with 1.3% (3/239) in the control group (P = .84) (Figure 2).

Discussion

In this retrospective cohort study, we observed a significant difference in rates of COVID-19 patients requiring repeat ED visits, hospitalizations, and deaths among those who received bamlanivimab compared with those who did not. Our study focused on high-risk patients with mild or moderate COVID-19, a unique subset of individuals who would normally be followed and treated via outpatient monitoring. We propose that treating high-risk patients earlier in their disease process with mAb therapy can have a major impact on overall outcomes, as defined by decreased subsequent hospitalizations, ED visits, and death.

Compared to clinical trials such as BLAZE-1 or REGN-COV2, every patient in this trial had at least 1 high-risk characteristic.9,11 This may explain why a greater proportion of our patients in both the control and treatment groups had subsequent hospitalization, ED visits, and deaths. COVID-19 patients seen in the ED may be a uniquely self-selected population of individuals likely to benefit from mAb therapy since they may be more likely to be sicker, have more comorbidities, or have less readily available primary care access for testing and treatment.14

Despite conducting a thorough literature review, we were unable to find any similar studies describing the ED as an appropriate setting for mAb treatment in patients with COVID-19. Multiple studies have used outpatient clinics as a setting for mAb treatment, and 1 retrospective analysis found that neutralizing mAb treatment in COVID-19 patients in an outpatient setting reduced hospital utilization.15 However, many Americans do not have access to primary care, with 1 study finding that only 75% of Americans had an identified source of primary care in 2015.16 Obstacles to primary care access include disabilities, lack of health insurance, language-related barriers, race/ethnicity, and homelessness.17 Barriers to access for primary care services and timely care make these populations more likely to frequent the ED.17 This makes the ED a unique location for early and targeted treatment of COVID-19 patients with a high risk for progression to severe COVID-19.

 

 

During surge periods in the COVID-19 pandemic, many hospitals met capacity or superseded their capacity for patients, with 4423 hospitals reporting more than 90% of hospital beds occupied and 2591 reporting more than 90% of ICU beds occupied during the peak surge week of January 1, 2021, to January 7, 2021.18 The main goals of lockdowns and masking have been to decrease the transmission of COVID-19 and hopefully flatten the curve to alleviate the burden on hospitals and decrease patient mortality. However, in surge situations when hospitals have already been pushed to their limits, we need to find ways to circumvent these shortages. This was particularly true at our academic medical center during the surge period of December 2020 through January 2021, necessitating the need for an innovative approach to improve patient outcomes and reduce the strain on resources. Utilizing the ED and implementing early treatment strategies with mAbs, especially during a surge crisis, can decrease severity of illness, hospitalizations, and deaths, as demonstrated in our article.

This study had several limitations. First, it is plausible that some ED patients may have gone to a different hospital after discharge from the UCI ED rather than returning to our institution. Given the constraints of using the EMR, we were only able to assess hospitalizations and subsequent ED visits at UCI. Second, there were 2 confounding variables identified when analyzing the demographic differences between the control and treatment group among those who met EUA criteria. The median age among those in the treatment group was greater than those in the control group (P = .03), and the proportion of individuals with CKD/ESRD was also greater in those in the treatment group (P = .02). It is well known that older patients and those with renal disease have higher incidences of morbidity and mortality. Achieving statistically significant differences overall between control and treatment groups despite greater numbers of older individuals and patients with renal disease in the treatment group supports our strategy and the usage of mAb.19,20

Finally, as of April 16, 2021, the FDA revoked EUA for bamlanivimab when administered alone. However, alternative mAb therapies remain available under the EUA, including REGEN-COV (casirivimab and imdevimab), sotrovimab, and the combination therapy of bamlanivimab and etesevimab.21 This decision was made in light of the increased frequency of resistant variants of SARS-CoV-2 with bamlanivimab treatment alone.21 Our study was conducted prior to this announcement. However, as treatment with other mAbs is still permissible, we believe our findings can translate to treatment with mAbs in general. In fact, combination therapy with bamlanivimab and etesevimab has been found to be more effective than monotherapy alone, suggesting that our results may be even more robust with combination mAb therapy.11 Overall, while additional studies are needed with larger sample sizes and combination mAb treatment to fully elucidate the impact of administering mAb treatment in the ED, our results suggest that targeting ED patients for mAb treatment may be an effective strategy to prevent the composite end point of repeat ED visits, hospitalizations, or deaths.

Conclusion

Targeting ED patients for mAb treatment may be an effective strategy to prevent progression to severe COVID-19 illness and substantially reduce the composite end point of repeat ED visits, hospitalizations, and deaths, especially for individuals of underserved populations who may not have access to ambulatory care.

Corresponding author: Alpesh Amin, MD, MBA, Department of Medicine and Hospital Medicine Program, University of California, Irvine, 333 City Tower West, Ste 500, Orange, CA 92868; [email protected].

Financial disclosures: This manuscript was generously supported by multiple donors, including the Mehra Family, the Yang Family, and the Chao Family. Dr. Amin reported serving as Principal Investigator or Co-Investigator of clinical trials sponsored by NIH/NIAID, NeuroRX Pharma, Pulmotect, Blade Therapeutics, Novartis, Takeda, Humanigen, Eli Lilly, PTC Therapeutics, OctaPharma, Fulcrum Therapeutics, and Alexion, unrelated to the present study. He has served as speaker and/or consultant for BMS, Pfizer, BI, Portola, Sunovion, Mylan, Salix, Alexion, AstraZeneca, Novartis, Nabriva, Paratek, Bayer, Tetraphase, Achaogen La Jolla, Ferring, Seres, Millennium, PeraHealth, HeartRite, Aseptiscope, and Sprightly, unrelated to the present study.

From the Center for Artificial Intelligence in Diagnostic Medicine, University of California, Irvine, CA (Drs. Chow and Chang, Mazaya Soundara), University of California Irvine School of Medicine, Irvine, CA (Ruchi Desai), Division of Infectious Diseases, University of California, Irvine, CA (Dr. Gohil), and the Department of Medicine and Hospital Medicine Program, University of California, Irvine, CA (Dr. Amin).

Background: The COVID-19 pandemic has placed substantial strain on hospital resources and has been responsible for more than 733 000 deaths in the United States. The US Food and Drug Administration has granted emergency use authorization (EUA) for monoclonal antibody (mAb) therapy in the US for patients with early-stage high-risk COVID-19.

Methods: In this retrospective cohort study, we studied the emergency department (ED) during a massive COVID-19 surge in Orange County, California, from December 4, 2020, to January 29, 2021, as a potential setting for efficient mAb delivery by evaluating the impact of bamlanivimab use in high-risk COVID-19 patients. All patients included in this study had positive results on nucleic acid amplification detection from nasopharyngeal or throat swabs, presented with 1 or more mild or moderate symptom, and met EUA criteria for mAb treatment. The primary outcome analyzed among this cohort of ED patients was overall improvement, which included subsequent ED/hospital visits, inpatient hospitalization, and death related to COVID-19.

Results: We identified 1278 ED patients with COVID-19 not treated with bamlanivimab and 73 patients with COVID-19 treated with bamlanivimab during the treatment period. Of these patients, 239 control patients and 63 treatment patients met EUA criteria. Overall, 7.9% (5/63) of patients receiving bamlanivimab had a subsequent ED/hospital visit, hospitalization, or death compared with 19.2% (46/239) in the control group (P = .03).

Conclusion: Targeting ED patients for mAb treatment may be an effective strategy to prevent progression to severe COVID-19 illness and substantially reduce the composite end point of repeat ED visits, hospitalizations, and deaths, especially for individuals of underserved populations who may not have access to ambulatory care.

Keywords: COVID-19; mAb; bamlanivimab; surge management.

Since December 2019, the novel pathogen SARS-CoV-2 has spread rapidly, culminating in a pandemic that has caused more than 4.9 million deaths worldwide and claimed more than 733 000 lives in the United States.1 The scale of the COVID-19 pandemic has placed an immense strain on hospital resources, including personal protective equipment (PPE), beds, ventilators and personnel.2,3 A previous analysis demonstrated that hospital capacity strain is associated with increased mortality and worsened health outcomes.4 A more recent analysis in light of the COVID-19 pandemic found that strains on critical care capacity were associated with increased COVID-19 intensive care unit (ICU) mortality.5 While more studies are needed to understand the association between hospital resources and COVID-19 mortality, efforts to decrease COVID-19 hospitalizations by early targeted treatment of patients in outpatient and emergency department (ED) settings may help to relieve the burden on hospital personnel and resources and decrease subsequent mortality.

Current therapeutic options focus on inpatient management of patients who progress to acute respiratory illness while patients with mild presentations are managed with outpatient monitoring, even those at high risk for progression. At the moment, only remdesivir, a viral RNA-dependent RNA polymerase inhibitor, has been approved by the US Food and Drug Administration (FDA) for treatment of hospitalized COVID-19 patients.6 However, in November 2020, the FDA granted emergency use authorization (EUA) for monoclonal antibodies (mAbs), monotherapy, and combination therapy in a broad range of early-stage, high-risk patients.7-9 Neutralizing mAbs include bamlanivimab (LY-CoV555), etesevimab (LY-CoV016), sotrovimab (VIR-7831), and casirivimab/imdevimab (REGN-COV2). These anti–spike protein antibodies prevent viral attachment to the human angiotensin-converting enzyme 2 receptor (hACE2) and subsequently prevent viral entry.10 mAb therapy has been shown to be effective in substantially reducing viral load, hospitalizations, and ED visits.11

Despite these promising results, uptake of mAb therapy has been slow, with more than 600 000 available doses remaining unused as of mid-January 2021, despite very high infection rates across the United States.12 In addition to the logistical challenges associated with intravenous (IV) therapy in the ambulatory setting, identifying, notifying, and scheduling appointments for ambulatory patients hamper efficient delivery to high-risk patients and limit access to underserved patients without primary care providers. For patients not treated in the ambulatory setting, the ED may serve as an ideal location for early implementation of mAb treatment in high-risk patients with mild to moderate COVID-19.

The University of California, Irvine (UCI) Medical Center is not only the major premium academic medical center in Orange County, California, but also the primary safety net hospital for vulnerable populations in Orange County. During the surge period from December 2020 through January 2021, we were over 100% capacity and had built an onsite mobile hospital to expand the number of beds available. Given the severity of the impact of COVID-19 on our resources, implementing a strategy to reduce hospital admissions, patient death, and subsequent ED visits was imperative. Our goal was to implement a strategy on the front end through the ED to optimize care for patients and reduce the strain on hospital resources.

We sought to study the ED during this massive surge as a potential setting for efficient mAb delivery by evaluating the impact of bamlanivimab use in high risk COVID-19 patients.

Methods

We conducted a retrospective cohort study (approved by UCI institutional review board) of sequential COVID-19 adult patients who were evaluated and discharged from the ED between December 4, 2020, and January 29, 2021, and received bamlanivimab treatment (cases) compared with a nontreatment group (control) of ED patients.

Using the UCI electronic medical record (EMR) system, we identified 1278 ED patients with COVID-19 not treated with bamlanivimab and 73 patients with COVID-19 treated with bamlanivimab during the months of December 2020 and January 2021. All patients included in this study met the EUA criteria for mAb therapy. According to the Centers for Disease Control and Prevention (CDC), during the period of this study, patients met EUA criteria if they had mild to moderate COVID-19, a positive direct SARS-CoV-2 viral testing, and a high risk for progressing to severe COVID-19 or hospitalization.13 High risk for progressing to severe COVID-19 and/or hospitalization is defined as meeting at least 1 of the following criteria: a body mass index of 35 or higher, chronic kidney disease (CKD), diabetes, immunosuppressive disease, currently receiving immunosuppressive treatment, aged 65 years or older, aged 55 years or older and have cardiovascular disease or hypertension, or chronic obstructive pulmonary disease (COPD)/other chronic respiratory diseases.13 All patients in the ED who met EUA criteria were offered mAb treatment; those who accepted the treatment were included in the treatment group, and those who refused were included in the control group.

 

 

All patients included in this study had positive results on nucleic acid amplification detection from nasopharyngeal or throat swabs and presented with 1 or more mild or moderate symptom, defined as: fever, cough, sore throat, malaise, headache, muscle pain, gastrointestinal symptoms, or shortness of breath. We excluded patients admitted to the hospital on that ED visit and those discharged to hospice. In addition, we excluded patients who presented 2 weeks after symptom onset and those who did not meet EUA criteria. Demographic data (age and gender) and comorbid conditions were obtained by EMR review. Comorbid conditions obtained included diabetes, hypertension, cardiovascular disease, coronary artery disease, CKD/end-stage renal disease (ESRD), COPD, obesity, and immunocompromised status.

Bamlanivimab infusion therapy in the ED followed CDC guidelines. Each patient received 700 mg of bamlanivimab diluted in 0.9% sodium chloride and administered as a single IV infusion. We established protocols to give patients IV immunoglobulin (IVIG) infusions directly in the ED.

The primary outcome analyzed among this cohort of ED patients was overall improvement, which included subsequent ED/hospital visits, inpatient hospitalization, and death related to COVID-19 within 90 days of initial ED visit. Each patient was only counted once. Data analysis and statistical tests were conducted using SPSS statistical software (SPSS Inc). Treatment effects were compared using χ2 test with an α level of 0.05. A t test was used for continuous variables, including age. A P value of less than .05 was considered significant.

Results

We screened a total of 1351 patients with COVID-19. Of these, 1278 patients did not receive treatment with bamlanivimab. Two hundred thirty-nine patients met inclusion criteria and were included in the control group. Seventy-three patients were treated with bamlanivimab in the ED; 63 of these patients met EUA criteria and comprised the treatment group (Figure 1).

Demographic details of the trial groups are provided in Table 1. The median age of the treatment group was 61 years (interquartile range [IQR], 55-73), while the median age of the control group was 57 years (IQR, 48-68). The difference in median age between the treatment and control individuals was significantly different (P = .03). There was no significant difference found in terms of gender between the control and treatment groups (P = .07). In addition, no significant difference was seen among racial and ethnic groups in the control and treatment groups. Comorbidities and demographics of all patients in the treatment and control groups are provided in Table 1. The only comorbidity that was found to be significantly different between the treatment and control groups was CKD/ESRD. Among those treated with bamlanivimab, 20.6% (13/63) had CKD/ESRD compared with 10.5% (25/239) in the control group (P = .02).

 

 

Overall, 7.9% (5/63) of patients receiving bamlanivimab had a subsequent ED/hospital visit, hospitalization, or death compared with 19.2% (46/239) in the control group (P = .03) (Table 2).

While the primary outcome of overall improvement was significantly different between the 2 groups, comparison of the individual components, including subsequent ED visits, hospitalizations, or death, were not significant. No treatment patients were hospitalized, compared with 5.4% (13/239) in the control group (P = .05). In the treatment group, 6.3% (4/63) returned to the ED compared with 12.6% (30/239) of the control group (P = .17). Finally, 1.6% (1/63) of the treatment group had a subsequent death that was due to COVID-19 compared with 1.3% (3/239) in the control group (P = .84) (Figure 2).

Discussion

In this retrospective cohort study, we observed a significant difference in rates of COVID-19 patients requiring repeat ED visits, hospitalizations, and deaths among those who received bamlanivimab compared with those who did not. Our study focused on high-risk patients with mild or moderate COVID-19, a unique subset of individuals who would normally be followed and treated via outpatient monitoring. We propose that treating high-risk patients earlier in their disease process with mAb therapy can have a major impact on overall outcomes, as defined by decreased subsequent hospitalizations, ED visits, and death.

Compared to clinical trials such as BLAZE-1 or REGN-COV2, every patient in this trial had at least 1 high-risk characteristic.9,11 This may explain why a greater proportion of our patients in both the control and treatment groups had subsequent hospitalization, ED visits, and deaths. COVID-19 patients seen in the ED may be a uniquely self-selected population of individuals likely to benefit from mAb therapy since they may be more likely to be sicker, have more comorbidities, or have less readily available primary care access for testing and treatment.14

Despite conducting a thorough literature review, we were unable to find any similar studies describing the ED as an appropriate setting for mAb treatment in patients with COVID-19. Multiple studies have used outpatient clinics as a setting for mAb treatment, and 1 retrospective analysis found that neutralizing mAb treatment in COVID-19 patients in an outpatient setting reduced hospital utilization.15 However, many Americans do not have access to primary care, with 1 study finding that only 75% of Americans had an identified source of primary care in 2015.16 Obstacles to primary care access include disabilities, lack of health insurance, language-related barriers, race/ethnicity, and homelessness.17 Barriers to access for primary care services and timely care make these populations more likely to frequent the ED.17 This makes the ED a unique location for early and targeted treatment of COVID-19 patients with a high risk for progression to severe COVID-19.

 

 

During surge periods in the COVID-19 pandemic, many hospitals met capacity or superseded their capacity for patients, with 4423 hospitals reporting more than 90% of hospital beds occupied and 2591 reporting more than 90% of ICU beds occupied during the peak surge week of January 1, 2021, to January 7, 2021.18 The main goals of lockdowns and masking have been to decrease the transmission of COVID-19 and hopefully flatten the curve to alleviate the burden on hospitals and decrease patient mortality. However, in surge situations when hospitals have already been pushed to their limits, we need to find ways to circumvent these shortages. This was particularly true at our academic medical center during the surge period of December 2020 through January 2021, necessitating the need for an innovative approach to improve patient outcomes and reduce the strain on resources. Utilizing the ED and implementing early treatment strategies with mAbs, especially during a surge crisis, can decrease severity of illness, hospitalizations, and deaths, as demonstrated in our article.

This study had several limitations. First, it is plausible that some ED patients may have gone to a different hospital after discharge from the UCI ED rather than returning to our institution. Given the constraints of using the EMR, we were only able to assess hospitalizations and subsequent ED visits at UCI. Second, there were 2 confounding variables identified when analyzing the demographic differences between the control and treatment group among those who met EUA criteria. The median age among those in the treatment group was greater than those in the control group (P = .03), and the proportion of individuals with CKD/ESRD was also greater in those in the treatment group (P = .02). It is well known that older patients and those with renal disease have higher incidences of morbidity and mortality. Achieving statistically significant differences overall between control and treatment groups despite greater numbers of older individuals and patients with renal disease in the treatment group supports our strategy and the usage of mAb.19,20

Finally, as of April 16, 2021, the FDA revoked EUA for bamlanivimab when administered alone. However, alternative mAb therapies remain available under the EUA, including REGEN-COV (casirivimab and imdevimab), sotrovimab, and the combination therapy of bamlanivimab and etesevimab.21 This decision was made in light of the increased frequency of resistant variants of SARS-CoV-2 with bamlanivimab treatment alone.21 Our study was conducted prior to this announcement. However, as treatment with other mAbs is still permissible, we believe our findings can translate to treatment with mAbs in general. In fact, combination therapy with bamlanivimab and etesevimab has been found to be more effective than monotherapy alone, suggesting that our results may be even more robust with combination mAb therapy.11 Overall, while additional studies are needed with larger sample sizes and combination mAb treatment to fully elucidate the impact of administering mAb treatment in the ED, our results suggest that targeting ED patients for mAb treatment may be an effective strategy to prevent the composite end point of repeat ED visits, hospitalizations, or deaths.

Conclusion

Targeting ED patients for mAb treatment may be an effective strategy to prevent progression to severe COVID-19 illness and substantially reduce the composite end point of repeat ED visits, hospitalizations, and deaths, especially for individuals of underserved populations who may not have access to ambulatory care.

Corresponding author: Alpesh Amin, MD, MBA, Department of Medicine and Hospital Medicine Program, University of California, Irvine, 333 City Tower West, Ste 500, Orange, CA 92868; [email protected].

Financial disclosures: This manuscript was generously supported by multiple donors, including the Mehra Family, the Yang Family, and the Chao Family. Dr. Amin reported serving as Principal Investigator or Co-Investigator of clinical trials sponsored by NIH/NIAID, NeuroRX Pharma, Pulmotect, Blade Therapeutics, Novartis, Takeda, Humanigen, Eli Lilly, PTC Therapeutics, OctaPharma, Fulcrum Therapeutics, and Alexion, unrelated to the present study. He has served as speaker and/or consultant for BMS, Pfizer, BI, Portola, Sunovion, Mylan, Salix, Alexion, AstraZeneca, Novartis, Nabriva, Paratek, Bayer, Tetraphase, Achaogen La Jolla, Ferring, Seres, Millennium, PeraHealth, HeartRite, Aseptiscope, and Sprightly, unrelated to the present study.

References

1. Global map. Johns Hopkins University & Medicine Coronavirus Resource Center. Updated November 9, 2021. Accessed November 9, 2021. https://coronavirus.jhu.edu/map.html

2. Truog RD, Mitchell C, Daley GQ. The toughest triage — allocating ventilators in a pandemic. N Engl J Med. 2020;382(21):1973-1975. doi:10.1056/NEJMp2005689

3. Cavallo JJ, Donoho DA, Forman HP. Hospital capacity and operations in the coronavirus disease 2019 (COVID-19) pandemic—planning for the Nth patient. JAMA Health Forum. 2020;1(3):e200345. doi:10.1001/jamahealthforum.2020.0345

4. Eriksson CO, Stoner RC, Eden KB, et al. The association between hospital capacity strain and inpatient outcomes in highly developed countries: a systematic review. J Gen Intern Med. 2017;32(6):686-696. doi:10.1007/s11606-016-3936-3

5. Bravata DM, Perkins AJ, Myers LJ, et al. Association of intensive care unit patient load and demand with mortality rates in US Department of Veterans Affairs hospitals during the COVID-19 pandemic. JAMA Netw Open. 2021;4(1):e2034266. doi:10.1001/jamanetworkopen.2020.34266

6. Beigel JH, Tomashek KM, Dodd LE, et al. Remdesivir for the treatment of Covid-19 - final report. N Engl J Med. 2020;383(19);1813-1826. doi:10.1056/NEJMoa2007764

7. Coronavirus (COVID-19) update: FDA authorizes monoclonal antibody for treatment of COVID-19. US Food & Drug Administration. November 9, 2020. Accessed November 9, 2021. https://www.fda.gov/news-events/press-announcements/coronavirus-covid-19-update-fda-authorizes-monoclonal-antibody-treatment-covid-19

8. Chen P, Nirula A, Heller B, et al. SARS-CoV-2 neutralizing antibody LY-CoV555 in outpatients with Covid-19. N Engl J Med. 2021;384(3):229-237. doi:10.1056/NEJMoa2029849

9. Weinreich DM, Sivapalasingam S, Norton T, et al. REGN-COV2, a neutralizing antibody cocktail, in outpatients with Covid-19. N Engl J Med. 2021;384(3):238-251. doi:10.1056/NEJMoa2035002

10. Chen X, Li R, Pan Z, et al. Human monoclonal antibodies block the binding of SARS-CoV-2 spike protein to angiotensin converting enzyme 2 receptor. Cell Mol Immunol. 2020;17(6):647-649. doi:10.1038/s41423-020-0426-7

11. Gottlieb RL, Nirula A, Chen P, et al. Effect of bamlanivimab as monotherapy or in combination with etesevimab on viral load in patients with mild to moderate COVID-19: a randomized clinical trial. JAMA. 2021;325(7):632-644. doi:10.1001/jama.2021.0202

12. Toy S, Walker J, Evans M. Highly touted monoclonal antibody therapies sit unused in hospitals The Wall Street Journal. December 27, 2020. Accessed November 9, 2021. https://www.wsj.com/articles/highly-touted-monoclonal-antibody-therapies-sit-unused-in-hospitals-11609087364

13. Anti-SARS-CoV-2 monoclonal antibodies. NIH COVID-19 Treatment Guidelines. Updated October 19, 2021. Accessed November 9, 2021. https://www.covid19treatmentguidelines.nih.gov/anti-sars-cov-2-antibody-products/anti-sars-cov-2-monoclonal-antibodies/

14. Langellier BA. Policy recommendations to address high risk of COVID-19 among immigrants. Am J Public Health. 2020;110(8):1137-1139. doi:10.2105/AJPH.2020.305792

15. Verderese J P, Stepanova M, Lam B, et al. Neutralizing monoclonal antibody treatment reduces hospitalization for mild and moderate COVID-19: a real-world experience. Clin Infect Dis. 2021;ciab579. doi:10.1093/cid/ciab579

16. Levine DM, Linder JA, Landon BE. Characteristics of Americans with primary care and changes over time, 2002-2015. JAMA Intern Med. 2020;180(3):463-466. doi:10.1001/jamainternmed.2019.6282

17. Rust G, Ye J, Daniels E, et al. Practical barriers to timely primary care access: impact on adult use of emergency department services. Arch Intern Med. 2008;168(15):1705-1710. doi:10.1001/archinte.168.15.1705

18. COVID-19 Hospitalization Tracking Project: analysis of HHS data. University of Minnesota. Carlson School of Management. Accessed November 9, 2021. https://carlsonschool.umn.edu/mili-misrc-covid19-tracking-project

19. Zare˛bska-Michaluk D, Jaroszewicz J, Rogalska M, et al. Impact of kidney failure on the severity of COVID-19. J Clin Med. 2021;10(9):2042. doi:10.3390/jcm10092042

20. Shahid Z, Kalayanamitra R, McClafferty B, et al. COVID‐19 and older adults: what we know. J Am Geriatr Soc. 2020;68(5):926-929. doi:10.1111/jgs.16472

21. Coronavirus (COVID-19) update: FDA revokes emergency use authorization for monoclonal antibody bamlanivimab. US Food & Drug Administration. April 16, 2021. Accessed November 9, 2021. https://www.fda.gov/news-events/press-announcements/coronavirus-covid-19-update-fda-revokes-emergency-use-authorization-monoclonal-antibody-bamlanivimab

References

1. Global map. Johns Hopkins University & Medicine Coronavirus Resource Center. Updated November 9, 2021. Accessed November 9, 2021. https://coronavirus.jhu.edu/map.html

2. Truog RD, Mitchell C, Daley GQ. The toughest triage — allocating ventilators in a pandemic. N Engl J Med. 2020;382(21):1973-1975. doi:10.1056/NEJMp2005689

3. Cavallo JJ, Donoho DA, Forman HP. Hospital capacity and operations in the coronavirus disease 2019 (COVID-19) pandemic—planning for the Nth patient. JAMA Health Forum. 2020;1(3):e200345. doi:10.1001/jamahealthforum.2020.0345

4. Eriksson CO, Stoner RC, Eden KB, et al. The association between hospital capacity strain and inpatient outcomes in highly developed countries: a systematic review. J Gen Intern Med. 2017;32(6):686-696. doi:10.1007/s11606-016-3936-3

5. Bravata DM, Perkins AJ, Myers LJ, et al. Association of intensive care unit patient load and demand with mortality rates in US Department of Veterans Affairs hospitals during the COVID-19 pandemic. JAMA Netw Open. 2021;4(1):e2034266. doi:10.1001/jamanetworkopen.2020.34266

6. Beigel JH, Tomashek KM, Dodd LE, et al. Remdesivir for the treatment of Covid-19 - final report. N Engl J Med. 2020;383(19);1813-1826. doi:10.1056/NEJMoa2007764

7. Coronavirus (COVID-19) update: FDA authorizes monoclonal antibody for treatment of COVID-19. US Food & Drug Administration. November 9, 2020. Accessed November 9, 2021. https://www.fda.gov/news-events/press-announcements/coronavirus-covid-19-update-fda-authorizes-monoclonal-antibody-treatment-covid-19

8. Chen P, Nirula A, Heller B, et al. SARS-CoV-2 neutralizing antibody LY-CoV555 in outpatients with Covid-19. N Engl J Med. 2021;384(3):229-237. doi:10.1056/NEJMoa2029849

9. Weinreich DM, Sivapalasingam S, Norton T, et al. REGN-COV2, a neutralizing antibody cocktail, in outpatients with Covid-19. N Engl J Med. 2021;384(3):238-251. doi:10.1056/NEJMoa2035002

10. Chen X, Li R, Pan Z, et al. Human monoclonal antibodies block the binding of SARS-CoV-2 spike protein to angiotensin converting enzyme 2 receptor. Cell Mol Immunol. 2020;17(6):647-649. doi:10.1038/s41423-020-0426-7

11. Gottlieb RL, Nirula A, Chen P, et al. Effect of bamlanivimab as monotherapy or in combination with etesevimab on viral load in patients with mild to moderate COVID-19: a randomized clinical trial. JAMA. 2021;325(7):632-644. doi:10.1001/jama.2021.0202

12. Toy S, Walker J, Evans M. Highly touted monoclonal antibody therapies sit unused in hospitals The Wall Street Journal. December 27, 2020. Accessed November 9, 2021. https://www.wsj.com/articles/highly-touted-monoclonal-antibody-therapies-sit-unused-in-hospitals-11609087364

13. Anti-SARS-CoV-2 monoclonal antibodies. NIH COVID-19 Treatment Guidelines. Updated October 19, 2021. Accessed November 9, 2021. https://www.covid19treatmentguidelines.nih.gov/anti-sars-cov-2-antibody-products/anti-sars-cov-2-monoclonal-antibodies/

14. Langellier BA. Policy recommendations to address high risk of COVID-19 among immigrants. Am J Public Health. 2020;110(8):1137-1139. doi:10.2105/AJPH.2020.305792

15. Verderese J P, Stepanova M, Lam B, et al. Neutralizing monoclonal antibody treatment reduces hospitalization for mild and moderate COVID-19: a real-world experience. Clin Infect Dis. 2021;ciab579. doi:10.1093/cid/ciab579

16. Levine DM, Linder JA, Landon BE. Characteristics of Americans with primary care and changes over time, 2002-2015. JAMA Intern Med. 2020;180(3):463-466. doi:10.1001/jamainternmed.2019.6282

17. Rust G, Ye J, Daniels E, et al. Practical barriers to timely primary care access: impact on adult use of emergency department services. Arch Intern Med. 2008;168(15):1705-1710. doi:10.1001/archinte.168.15.1705

18. COVID-19 Hospitalization Tracking Project: analysis of HHS data. University of Minnesota. Carlson School of Management. Accessed November 9, 2021. https://carlsonschool.umn.edu/mili-misrc-covid19-tracking-project

19. Zare˛bska-Michaluk D, Jaroszewicz J, Rogalska M, et al. Impact of kidney failure on the severity of COVID-19. J Clin Med. 2021;10(9):2042. doi:10.3390/jcm10092042

20. Shahid Z, Kalayanamitra R, McClafferty B, et al. COVID‐19 and older adults: what we know. J Am Geriatr Soc. 2020;68(5):926-929. doi:10.1111/jgs.16472

21. Coronavirus (COVID-19) update: FDA revokes emergency use authorization for monoclonal antibody bamlanivimab. US Food & Drug Administration. April 16, 2021. Accessed November 9, 2021. https://www.fda.gov/news-events/press-announcements/coronavirus-covid-19-update-fda-revokes-emergency-use-authorization-monoclonal-antibody-bamlanivimab

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Finding healthcare ‘soul-destroying,’ some turn to online sex work

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In March 2021, Prime Minister Boris Johnson proposed a 1% pay rise for National Health Service (NHS) workers in the United Kingdom — a move many deemed inadequate after a full year of fighting the COVID-19 pandemic. The next day, James Cowe, a 23-year-old healthcare assistant who had been working in dementia care for 6 years, decided to create a profile on the content subscription site OnlyFans.

The London-based site allows subscribers, or “fans,” to request content, making its name distributing nude pictures, videos, and other sexually explicit content. It garnered mainstream attention in 2020 when housebound individuals and even celebrities began using it to generate income. Back in August, OnlyFans released a statement stating that it would ban “sexually explicit” content beginning in October. Days later, the company recanted the statement after uproar from creators.

“Because of the one-percent pay rise, I’ve started OnlyFans and I’m making more money in three days than I make in a month at work,” Mr. Cowe said in a now-deleted TikTok post. “Sorry Boris, but I’m done with healthcare and now I’m an online whore.”

Mr. Cowe earned the equivalent of a year’s salary from his healthcare assistant job in his first 22 days on OnlyFans.

Mr. Cowe is one of many healthcare workers in the United Kingdom who have supplemented or replaced their health work with sex work. Stories like his have multiplied during the pandemic, at a time when healthcare professionals have been particularly overworked and particularly essential. Meanwhile, the pandemic has exacerbated challenges for many sex workers across the globe.

“[There have been] many, many reports over history that transactional sex is used as a sort of emergency livelihood strategy in all kinds of emergencies,” says Joanne Csete, PhD, associate professor of population and family health at Columbia University, New York, “and I suppose this is an emergency in that sense, like any other.”
 

The relationship between sex work and healthcare

2015 study by Leeds University found that 70% of sex workers in the United Kingdom previously worked in healthcare, charities, or education and that more than a third held university degrees.

The relationship between sex workers and healthcare workers has historically been disconnected. Sex workers are at higher risk of experiencing violence, sexually transmitted infections, and substance abuse and mental health problems than the general population, as noted by the American College of Obstetricians and Gynecologists. But according to the UN Population Fund, 63% of sex workers will not seek health services alone because they are distrustful and fearful of healthcare workers. A 2014 study by UNAIDS found that stigmatization also makes sex workers less likely to seek assistance from social services.

“I think it’s almost universally hard for sex workers to get respectful healthcare without judgment, and in some cases actual hostility, because of the stigma of their work,” Dr. Csete says. “Health workers are not always trained to see sex work as anything but either a criminal act or an immoral act.”

In August 2021, U.K. medical students called for the British Medical Association to protect students from being penalized by or expelled from their universities for engaging in sex work. BMA Medical Students Committee chair Becky Bates cited high medical school fees and a lack of financial support as motivations for student sex workers. She told this news organization that sex work often allows for flexible hours that might make it easier for students to balance the demands of medical school than other part-time jobs would.

At the annual BMA conference in September, two thirds of the association’s doctors voted in favor of the motion, while others criticized it as potential encouragement for students to get involved in sex work. “The motion isn’t about the morality of sex work,” Ms. Bates said. “[It’s] about the fact that it’s happening and what we can do to support students.”
 

 

 

Healthcare workers on OnlyFans

The rising pressures placed on individuals in the health field have coincided with the rise of online platforms that host pornographic content. During the pandemic, professionals worn down by their healthcare work have embraced sites like OnlyFans as lower-risk, lower-stress, and potentially higher-paying additions or alternatives.

“It’s quite exploitative to work for such low pay in harsh conditions,” Mr. Cowe told this news organizaation of his experience as a dementia care assistant. “It’s soul-destroying. You feel like, ‘It doesn’t matter how many hours I work, it doesn’t matter what I do, I’m still going to be in this same financial position.’ ”

Mr. Cowe earned the equivalent of a year’s salary from his healthcare assistant job in his first 22 days on OnlyFans. Within 8 months, he had earned £150,000, or approximately $205,000.

As an emergency medical services (EMS) worker in New York City, 23-year-old Lauren Kwei lifted obese bariatric patients, administered cardiopulmonary resuscitation to unresponsive recipients, and transported elderly patients and children with terminal illnesses to hospice. She earned $25 an hour, which she says was insufficient for life in one of the world’s most expensive cities. So, in addition to her paramedic work, Ms. Kwei posted photos and videos on OnlyFans to help pay for rent and groceries during the pandemic.

Ms. Kwei started her OnlyFans as a means of paying for necessities like rent and groceries, which her wage as an emergency medical services worker couldn’t cover entirely.

In December 2020, Ms. Kwei got a call from a New York Post reporter who informed her he was writing an article outing her OnlyFans side gig. Ms. Kwei immediately deleted her account on the site for fear of being penalized by her employer, SeniorCare.

“Leave her alone,” U.S. Representative Alexandria Ocasio-Cortez wrote on Twitter in response to the New York Post article. “The actual scandalous headline here is ‘Medics in the United States need two jobs to survive.’ ”

The article quoted an anonymous male paramedic who said Ms. Kwei should have been “pulling extra shifts, instead of pulling off [her] clothes” to earn more money. Ms. Kwei says such advice fails to acknowledge the intensity of the job. “Why would I pick up overtime shifts doing manual labor,” she says, “when I could be doing [OnlyFans] from the comfort of my own home?”
 

The future of the healthcare/sex work relationship

Ms. Kwei is young enough to receive health insurance through her parents, and Mr. Cowe has access to free healthcare through the NHS. But many sex workers — particularly full-service sex workers, who carry out their work in person — have limited access to services such as healthcare and unemployment benefits. Pandemic restrictions have concurrently driven full-service sex work further underground and therefore deepened the health and safety risks associated with its criminalization.

As health workers become increasingly involved in sex work, advocates in both fields are pushing for healthcare systems to involve sex workers.

“Just as we would do with supporting any group, it’s about understanding any specific barriers or specific problems that they’re encountering, and understanding what they think would help, and working together on that solution,” Ms. Bates says of supporting medical students who engage in sex work.

Tlaleng Mofokeng, MD, UN Special Rapporteur on the right to health, says it is crucial for healthcare organizations to partner with sex worker organizations when it comes to planning the resourcing and budgeting of the public health system in order to meet sex workers’ needs. “While we wait for national policy to change and while we wait for decriminalization,” she says, “tangible things can be done to ensure the provision of equitable services that are aligned with the respect of [sex workers’] rights and the restoration of their dignity.”

Today, healthcare professionals can expect to work with classmates, colleagues, and patients who are involved in sex work and who do not fit the socioeconomic stereotypes associated with sex workers. The number of medical students and healthcare workers engaging in sex work is likely to continue to rise as these individuals struggle to find financial and emotional support within the health sector. Ultimately, many health workers and sex workers share a common goal: to be involved in healthcare systems that respect their work and meet their basic needs.

Mr. Cowe doubts he will ever return to the healthcare industry, owing in part to the stigma against sex workers. “I would feel quite unwelcome,” he says. “[The publicity I received] probably made it not possible for me to go back, but even so, I wouldn’t have a desire to because I was just so burnt out in the end.”

Ms. Kwei is taking a break from her EMS work because of the emotional and financial toll it took, but she plans to return in the future. In the meantime, she is back on OnlyFans and advocating for higher wages for EMS workers as a member of the Emergency Medical Services Public Advocacy Council (EMSPAC). “In order to be a good paramedic, my mental health needs to be on point,” she says. “Hopefully down the line, when I decide to pick up EMS [work] again, I can find a job that pays me enough.”

A version of this article first appeared on Medscape.com.

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In March 2021, Prime Minister Boris Johnson proposed a 1% pay rise for National Health Service (NHS) workers in the United Kingdom — a move many deemed inadequate after a full year of fighting the COVID-19 pandemic. The next day, James Cowe, a 23-year-old healthcare assistant who had been working in dementia care for 6 years, decided to create a profile on the content subscription site OnlyFans.

The London-based site allows subscribers, or “fans,” to request content, making its name distributing nude pictures, videos, and other sexually explicit content. It garnered mainstream attention in 2020 when housebound individuals and even celebrities began using it to generate income. Back in August, OnlyFans released a statement stating that it would ban “sexually explicit” content beginning in October. Days later, the company recanted the statement after uproar from creators.

“Because of the one-percent pay rise, I’ve started OnlyFans and I’m making more money in three days than I make in a month at work,” Mr. Cowe said in a now-deleted TikTok post. “Sorry Boris, but I’m done with healthcare and now I’m an online whore.”

Mr. Cowe earned the equivalent of a year’s salary from his healthcare assistant job in his first 22 days on OnlyFans.

Mr. Cowe is one of many healthcare workers in the United Kingdom who have supplemented or replaced their health work with sex work. Stories like his have multiplied during the pandemic, at a time when healthcare professionals have been particularly overworked and particularly essential. Meanwhile, the pandemic has exacerbated challenges for many sex workers across the globe.

“[There have been] many, many reports over history that transactional sex is used as a sort of emergency livelihood strategy in all kinds of emergencies,” says Joanne Csete, PhD, associate professor of population and family health at Columbia University, New York, “and I suppose this is an emergency in that sense, like any other.”
 

The relationship between sex work and healthcare

2015 study by Leeds University found that 70% of sex workers in the United Kingdom previously worked in healthcare, charities, or education and that more than a third held university degrees.

The relationship between sex workers and healthcare workers has historically been disconnected. Sex workers are at higher risk of experiencing violence, sexually transmitted infections, and substance abuse and mental health problems than the general population, as noted by the American College of Obstetricians and Gynecologists. But according to the UN Population Fund, 63% of sex workers will not seek health services alone because they are distrustful and fearful of healthcare workers. A 2014 study by UNAIDS found that stigmatization also makes sex workers less likely to seek assistance from social services.

“I think it’s almost universally hard for sex workers to get respectful healthcare without judgment, and in some cases actual hostility, because of the stigma of their work,” Dr. Csete says. “Health workers are not always trained to see sex work as anything but either a criminal act or an immoral act.”

In August 2021, U.K. medical students called for the British Medical Association to protect students from being penalized by or expelled from their universities for engaging in sex work. BMA Medical Students Committee chair Becky Bates cited high medical school fees and a lack of financial support as motivations for student sex workers. She told this news organization that sex work often allows for flexible hours that might make it easier for students to balance the demands of medical school than other part-time jobs would.

At the annual BMA conference in September, two thirds of the association’s doctors voted in favor of the motion, while others criticized it as potential encouragement for students to get involved in sex work. “The motion isn’t about the morality of sex work,” Ms. Bates said. “[It’s] about the fact that it’s happening and what we can do to support students.”
 

 

 

Healthcare workers on OnlyFans

The rising pressures placed on individuals in the health field have coincided with the rise of online platforms that host pornographic content. During the pandemic, professionals worn down by their healthcare work have embraced sites like OnlyFans as lower-risk, lower-stress, and potentially higher-paying additions or alternatives.

“It’s quite exploitative to work for such low pay in harsh conditions,” Mr. Cowe told this news organizaation of his experience as a dementia care assistant. “It’s soul-destroying. You feel like, ‘It doesn’t matter how many hours I work, it doesn’t matter what I do, I’m still going to be in this same financial position.’ ”

Mr. Cowe earned the equivalent of a year’s salary from his healthcare assistant job in his first 22 days on OnlyFans. Within 8 months, he had earned £150,000, or approximately $205,000.

As an emergency medical services (EMS) worker in New York City, 23-year-old Lauren Kwei lifted obese bariatric patients, administered cardiopulmonary resuscitation to unresponsive recipients, and transported elderly patients and children with terminal illnesses to hospice. She earned $25 an hour, which she says was insufficient for life in one of the world’s most expensive cities. So, in addition to her paramedic work, Ms. Kwei posted photos and videos on OnlyFans to help pay for rent and groceries during the pandemic.

Ms. Kwei started her OnlyFans as a means of paying for necessities like rent and groceries, which her wage as an emergency medical services worker couldn’t cover entirely.

In December 2020, Ms. Kwei got a call from a New York Post reporter who informed her he was writing an article outing her OnlyFans side gig. Ms. Kwei immediately deleted her account on the site for fear of being penalized by her employer, SeniorCare.

“Leave her alone,” U.S. Representative Alexandria Ocasio-Cortez wrote on Twitter in response to the New York Post article. “The actual scandalous headline here is ‘Medics in the United States need two jobs to survive.’ ”

The article quoted an anonymous male paramedic who said Ms. Kwei should have been “pulling extra shifts, instead of pulling off [her] clothes” to earn more money. Ms. Kwei says such advice fails to acknowledge the intensity of the job. “Why would I pick up overtime shifts doing manual labor,” she says, “when I could be doing [OnlyFans] from the comfort of my own home?”
 

The future of the healthcare/sex work relationship

Ms. Kwei is young enough to receive health insurance through her parents, and Mr. Cowe has access to free healthcare through the NHS. But many sex workers — particularly full-service sex workers, who carry out their work in person — have limited access to services such as healthcare and unemployment benefits. Pandemic restrictions have concurrently driven full-service sex work further underground and therefore deepened the health and safety risks associated with its criminalization.

As health workers become increasingly involved in sex work, advocates in both fields are pushing for healthcare systems to involve sex workers.

“Just as we would do with supporting any group, it’s about understanding any specific barriers or specific problems that they’re encountering, and understanding what they think would help, and working together on that solution,” Ms. Bates says of supporting medical students who engage in sex work.

Tlaleng Mofokeng, MD, UN Special Rapporteur on the right to health, says it is crucial for healthcare organizations to partner with sex worker organizations when it comes to planning the resourcing and budgeting of the public health system in order to meet sex workers’ needs. “While we wait for national policy to change and while we wait for decriminalization,” she says, “tangible things can be done to ensure the provision of equitable services that are aligned with the respect of [sex workers’] rights and the restoration of their dignity.”

Today, healthcare professionals can expect to work with classmates, colleagues, and patients who are involved in sex work and who do not fit the socioeconomic stereotypes associated with sex workers. The number of medical students and healthcare workers engaging in sex work is likely to continue to rise as these individuals struggle to find financial and emotional support within the health sector. Ultimately, many health workers and sex workers share a common goal: to be involved in healthcare systems that respect their work and meet their basic needs.

Mr. Cowe doubts he will ever return to the healthcare industry, owing in part to the stigma against sex workers. “I would feel quite unwelcome,” he says. “[The publicity I received] probably made it not possible for me to go back, but even so, I wouldn’t have a desire to because I was just so burnt out in the end.”

Ms. Kwei is taking a break from her EMS work because of the emotional and financial toll it took, but she plans to return in the future. In the meantime, she is back on OnlyFans and advocating for higher wages for EMS workers as a member of the Emergency Medical Services Public Advocacy Council (EMSPAC). “In order to be a good paramedic, my mental health needs to be on point,” she says. “Hopefully down the line, when I decide to pick up EMS [work] again, I can find a job that pays me enough.”

A version of this article first appeared on Medscape.com.

In March 2021, Prime Minister Boris Johnson proposed a 1% pay rise for National Health Service (NHS) workers in the United Kingdom — a move many deemed inadequate after a full year of fighting the COVID-19 pandemic. The next day, James Cowe, a 23-year-old healthcare assistant who had been working in dementia care for 6 years, decided to create a profile on the content subscription site OnlyFans.

The London-based site allows subscribers, or “fans,” to request content, making its name distributing nude pictures, videos, and other sexually explicit content. It garnered mainstream attention in 2020 when housebound individuals and even celebrities began using it to generate income. Back in August, OnlyFans released a statement stating that it would ban “sexually explicit” content beginning in October. Days later, the company recanted the statement after uproar from creators.

“Because of the one-percent pay rise, I’ve started OnlyFans and I’m making more money in three days than I make in a month at work,” Mr. Cowe said in a now-deleted TikTok post. “Sorry Boris, but I’m done with healthcare and now I’m an online whore.”

Mr. Cowe earned the equivalent of a year’s salary from his healthcare assistant job in his first 22 days on OnlyFans.

Mr. Cowe is one of many healthcare workers in the United Kingdom who have supplemented or replaced their health work with sex work. Stories like his have multiplied during the pandemic, at a time when healthcare professionals have been particularly overworked and particularly essential. Meanwhile, the pandemic has exacerbated challenges for many sex workers across the globe.

“[There have been] many, many reports over history that transactional sex is used as a sort of emergency livelihood strategy in all kinds of emergencies,” says Joanne Csete, PhD, associate professor of population and family health at Columbia University, New York, “and I suppose this is an emergency in that sense, like any other.”
 

The relationship between sex work and healthcare

2015 study by Leeds University found that 70% of sex workers in the United Kingdom previously worked in healthcare, charities, or education and that more than a third held university degrees.

The relationship between sex workers and healthcare workers has historically been disconnected. Sex workers are at higher risk of experiencing violence, sexually transmitted infections, and substance abuse and mental health problems than the general population, as noted by the American College of Obstetricians and Gynecologists. But according to the UN Population Fund, 63% of sex workers will not seek health services alone because they are distrustful and fearful of healthcare workers. A 2014 study by UNAIDS found that stigmatization also makes sex workers less likely to seek assistance from social services.

“I think it’s almost universally hard for sex workers to get respectful healthcare without judgment, and in some cases actual hostility, because of the stigma of their work,” Dr. Csete says. “Health workers are not always trained to see sex work as anything but either a criminal act or an immoral act.”

In August 2021, U.K. medical students called for the British Medical Association to protect students from being penalized by or expelled from their universities for engaging in sex work. BMA Medical Students Committee chair Becky Bates cited high medical school fees and a lack of financial support as motivations for student sex workers. She told this news organization that sex work often allows for flexible hours that might make it easier for students to balance the demands of medical school than other part-time jobs would.

At the annual BMA conference in September, two thirds of the association’s doctors voted in favor of the motion, while others criticized it as potential encouragement for students to get involved in sex work. “The motion isn’t about the morality of sex work,” Ms. Bates said. “[It’s] about the fact that it’s happening and what we can do to support students.”
 

 

 

Healthcare workers on OnlyFans

The rising pressures placed on individuals in the health field have coincided with the rise of online platforms that host pornographic content. During the pandemic, professionals worn down by their healthcare work have embraced sites like OnlyFans as lower-risk, lower-stress, and potentially higher-paying additions or alternatives.

“It’s quite exploitative to work for such low pay in harsh conditions,” Mr. Cowe told this news organizaation of his experience as a dementia care assistant. “It’s soul-destroying. You feel like, ‘It doesn’t matter how many hours I work, it doesn’t matter what I do, I’m still going to be in this same financial position.’ ”

Mr. Cowe earned the equivalent of a year’s salary from his healthcare assistant job in his first 22 days on OnlyFans. Within 8 months, he had earned £150,000, or approximately $205,000.

As an emergency medical services (EMS) worker in New York City, 23-year-old Lauren Kwei lifted obese bariatric patients, administered cardiopulmonary resuscitation to unresponsive recipients, and transported elderly patients and children with terminal illnesses to hospice. She earned $25 an hour, which she says was insufficient for life in one of the world’s most expensive cities. So, in addition to her paramedic work, Ms. Kwei posted photos and videos on OnlyFans to help pay for rent and groceries during the pandemic.

Ms. Kwei started her OnlyFans as a means of paying for necessities like rent and groceries, which her wage as an emergency medical services worker couldn’t cover entirely.

In December 2020, Ms. Kwei got a call from a New York Post reporter who informed her he was writing an article outing her OnlyFans side gig. Ms. Kwei immediately deleted her account on the site for fear of being penalized by her employer, SeniorCare.

“Leave her alone,” U.S. Representative Alexandria Ocasio-Cortez wrote on Twitter in response to the New York Post article. “The actual scandalous headline here is ‘Medics in the United States need two jobs to survive.’ ”

The article quoted an anonymous male paramedic who said Ms. Kwei should have been “pulling extra shifts, instead of pulling off [her] clothes” to earn more money. Ms. Kwei says such advice fails to acknowledge the intensity of the job. “Why would I pick up overtime shifts doing manual labor,” she says, “when I could be doing [OnlyFans] from the comfort of my own home?”
 

The future of the healthcare/sex work relationship

Ms. Kwei is young enough to receive health insurance through her parents, and Mr. Cowe has access to free healthcare through the NHS. But many sex workers — particularly full-service sex workers, who carry out their work in person — have limited access to services such as healthcare and unemployment benefits. Pandemic restrictions have concurrently driven full-service sex work further underground and therefore deepened the health and safety risks associated with its criminalization.

As health workers become increasingly involved in sex work, advocates in both fields are pushing for healthcare systems to involve sex workers.

“Just as we would do with supporting any group, it’s about understanding any specific barriers or specific problems that they’re encountering, and understanding what they think would help, and working together on that solution,” Ms. Bates says of supporting medical students who engage in sex work.

Tlaleng Mofokeng, MD, UN Special Rapporteur on the right to health, says it is crucial for healthcare organizations to partner with sex worker organizations when it comes to planning the resourcing and budgeting of the public health system in order to meet sex workers’ needs. “While we wait for national policy to change and while we wait for decriminalization,” she says, “tangible things can be done to ensure the provision of equitable services that are aligned with the respect of [sex workers’] rights and the restoration of their dignity.”

Today, healthcare professionals can expect to work with classmates, colleagues, and patients who are involved in sex work and who do not fit the socioeconomic stereotypes associated with sex workers. The number of medical students and healthcare workers engaging in sex work is likely to continue to rise as these individuals struggle to find financial and emotional support within the health sector. Ultimately, many health workers and sex workers share a common goal: to be involved in healthcare systems that respect their work and meet their basic needs.

Mr. Cowe doubts he will ever return to the healthcare industry, owing in part to the stigma against sex workers. “I would feel quite unwelcome,” he says. “[The publicity I received] probably made it not possible for me to go back, but even so, I wouldn’t have a desire to because I was just so burnt out in the end.”

Ms. Kwei is taking a break from her EMS work because of the emotional and financial toll it took, but she plans to return in the future. In the meantime, she is back on OnlyFans and advocating for higher wages for EMS workers as a member of the Emergency Medical Services Public Advocacy Council (EMSPAC). “In order to be a good paramedic, my mental health needs to be on point,” she says. “Hopefully down the line, when I decide to pick up EMS [work] again, I can find a job that pays me enough.”

A version of this article first appeared on Medscape.com.

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A Starter Guide to Immunofluorescence Testing in Dermatology

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A Starter Guide to Immunofluorescence Testing in Dermatology

Direct immunofluorescence (DIF) is the go-to diagnostic test when evaluating vesiculobullous eruptions, connective tissue disease, and vasculitis. This specialized test allows visualization of autoantibodies and their reaction products in the epidermis and dermis (skin) and epithelium and subepithelium (mucosa). Indirect immunofluorescence (IIF) and enzyme-linked immunosorbent assay (ELISA) are additional tests that can help in the diagnosis of autoimmune blistering disease. In the blistering autoimmune diseases, the autoantibodies target components in skin and mucous membranes that are essential for cell-cell and cell-matrix adhesion causing separation within or beneath the epidermis, depending on where the target components are located. This article is intended to serve as a helpful primer for immunofluorescence testing in dermatology, with an overview of the tests available as well as pragmatic tips for optimal biopsy sites and specimen transport.

Direct Immunofluorescence

Immunofluorescence techniques date back to 1941 when Albert Coons, an American physician, pathologist, and immunologist, fluorescently labelled antibodies to visualize pneumococcal antigens in infected tissues.1-3 In dermatology, similar methodology was used to visualize the deposition of immunoglobulins and complement in the skin of patients with systemic lupus erythematosus in 1963.4 Basement membrane zone antibodies were first visualized via DIF in bullous pemphigoid in 1967.5 This elegant test utilizes specific antibodies labeled with fluorophores that are then incubated with the patient’s tissue, ultimately forming antibody-antigen conjugates that can be visualized with a fluorescent microscope. Antibodies usually include IgG, IgM, IgA, fibrinogen, and C3. Some institutions also evaluate for IgG4.

Transport medium is critical for proper evaluation of tissues using DIF. Inappropriate storage of tissue can degrade the antigen and confuse the interpretation of specimens. An acceptable medium for DIF includes Michel transport medium, which allows tissue to be stored for days while being transported at ambient temperature without loss of signal.6,7 Zeus medium also can be used and is more readily available. Alternatively, biopsy tissue can be snap frozen using liquid nitrogen. Specimens also may be stored on saline gauze but should be analyzed within 24 to 48 hours.8 Most importantly, do not place the specimen in formalin; even a brief soak in formalin can greatly alter results, especially when trying to diagnose pemphigus.9 Proper transport conditions are critical to prevent autolysis, mitigate putrefaction, and preserve morphology while maintaining antigenicity.10

 

Indirect Immunofluorescence

Indirect immunofluorescence can be helpful for detecting antibodies circulating in patient serum. Indirect immunofluorescence can be used to help diagnose pemphigoid, pemphigus, epidermolysis bullosa acquisita, bullous lupus erythematosus, and dermatitis herpetiformis. Serum testing also can be a helpful alternative when obtaining tissue is difficult, such as in children.

Indirect immunofluorescence is a 2-part technique that takes a bit longer to assay than DIF.11 The first step involves incubating prepared tissue substrates with patient serum. Unlabeled antibodies in the patient serum are allowed to bind to antigens in the substrate tissue for about 30 minutes. Doubling dilutions of patient serum can be performed to titer antibody levels. The second step uses fluorescein-labeled antihuman antibodies to recognize the antigen-antibody conjugates. Normal whole tissues (eg, monkey esophagus for pemphigus vulgaris, rat bladder for paraneoplastic pemphigus, salt-split normal human skin substrate for pemphigoid and epidermolysis bullosa) are the usual substrates for testing.11,12 Again, this test requires serum and should be collected in a red-top tube or serum-separator tube. Usually, a minimum of 0.5 mL is required for testing, but check with your preferred immunodermatology send-out laboratory before collecting.13

Indirect immunofluorescence usually involves an initial screening panel using 1 or 2 tissue substrates followed by individual antigen-specific assays that correspond to the clinical suspicion and IIF screening results.11 Salt-split skin is used to localize basement membrane zone autoantibodies to either the epidermal (roof) or dermal (floor) side. Although many dermatopathology laboratories offer DIF testing, IIF is more specialized and may be a send-out test at your institution.

Enzyme-linked Immunosorbent Assays

Another tool in the immunodermatology armamentarium is ELISA. Commercial ELISA systems are available for the detection of autoantibodies against bullous pemphigoid (BP) antigen 180, BP230, type VII collagen, desmoglein (Dsg) 1, Dsg3, and envoplakin.11 This test allows semiquantitative measurement of antibody levels and thus can be used to monitor response to treatment or identify relapse and treatment failure.11 For example, in BP, significantly increased baseline anti-BP180 IgG levels correlate with 1-year mortality rates (P=.001) and relapse rates (P=.041).14,15 Numerous additional studies support the observation that monitoring anti-BP180 as a potential marker of disease relapse can be helpful.16,17 In pemphigus, the presence or increase of autoantibodies at remission, either anti-Dsg3 or anti-Dsg1, may be a useful tool in predicting disease relapse.18 It is important for physicians to be aware of this to be able to offer guidance on prognosis.

 

 

Where Should I Biopsy?

Knowing where to biopsy can be confusing when beginning residency. But the short answer is, it depends. Let your clinical suspicion guide your specimen site. The Figure provides a quick reference for which location will give you the highest yield for a specific diagnosis.

Preferred sites for biopsy specimens for direct immunofluorescence (DIF) in autoimmune bullous disorders. BP indicates bullous pemphigoid; DH, dermatitis herpetiformis.

A few cardinal rules should guide which site is biopsied. Avoid obtaining specimens from the lower extremities as much as possible, as this site has been linked with false-negative results, especially in bullous pemphigoid.19,20 As a dependent area prone to stasis, this site gets a lot of abuse and inflammatory changes secondary to everyday insults that can theoretically alter DIF findings, especially fibrinogen deposition.

Although tissue sent for hematoxylin and eosin staining should be lesional, biopsy for DIF ideally should not contain a new or active blister, ulcer, erosion, or bulla. Immunoreactants are more likely to be degraded in these areas, and DIF may be falsely negative.21

It is worthwhile to briefly discuss the definitions of the terms perilesional and nonlesional. Perilesional skin most frequently refers to skin adjacent to a bulla or vesicle. This skin can be erythematous/inflamed or appear normal. When obtaining tissue for a diagnosis of blistering disease, the general recommendation is to obtain the biopsy from lesional nonbullous skin or perilesional uninvolved skin within 1 cm of the bulla.22-24 The only exception to this is dermatitis herpetiformis, which is best diagnosed on tissue obtained from normal-appearing perilesional skin within 1 cm of an active lesion.25 Additionally, if your patient has oral disease, the recommendation is to obtain the biopsy from nonlesional buccal mucosa, especially if there is desquamative gingivitis.26,27

The ideal biopsy size is 4 or 5 mm. If considering both DIF and histopathology, it is best to procure 2 separate specimens. One larger biopsy can be carefully bisected in 2 but often is subject to more handling artifacts, which can affect findings. In the case of 1 biopsy bisected into 2 specimens, the punch should be at least 6 mm. Shave biopsies also can be performed as long as they extend into the reticular dermis.23

 

 

For vasculitis, biopsies for DIF should be taken from lesions that are less than 24 hours old for highest yield, as the level of tissue immunoreactants tends to decline over time.28 This guideline does differ from hematoxylin and eosin specimens sent for evaluation of vasculitis, which ideally should be lesional tissue over 72 hours old. When evaluating for lupus (including subacute cutaneous lupus, discoid lupus, and systemic lupus), DIF is more likely to be positive in well-established, active lesions.

Which Test Should I Order?

The answer to this question depends, but the use of all 3 tests has a specificity close to 100% when evaluating for autoantibody-associated diseases.23 For autoimmune blistering disease, DIF is considered the diagnostic standard. The sensitivity of DIF for diagnosing BP is in the range of 82% to 90.5%, while specificity is 98%.29-31 Other autoimmune blistering diseases, such as pemphigus or dermatitis herpetiformis, have even higher sensitivities and specificities. Direct immunofluorescence often is used as a screening test, but false negatives do occur.32,33 Although rare, false positives also can occur, especially in cases of infection, and should be suspected when there is a lack of clinicopathologic correlation.34 If DIF is negative but clinical suspicion remains high, IIF should be ordered to directly evaluate a patient’s serum for autoantibodies.

In acute cutaneous lupus, subacute cutaneous lupus, and discoid lupus, DIF of active lesions may be helpful if histopathologic examination of a cutaneous lupus erythematosus lesion is nondiagnostic. However, histopathologic examination of formalin-fixed tissue remains the standard for these diagnoses. In vasculitis, while DIF is not used for diagnosis, it is useful to evaluate for IgA deposition. This is important in adults, as IgA deposition has been associated with a greater risk for developing end-stage renal disease.35

 

Final Thoughts

This is an overview of the tests available for diagnosing autoimmune blistering diseases. Residents should keep in mind that these tests are just one part of the puzzle when it comes to diagnosing these diseases. Results of DIF, IIF, and ELISA testing should be considered in conjunction with patient history and physical examination as well as histopathologic examination of lesional tissue when evaluating for dermatologic diseases with autoantibodies.

References
  1. Arthur G. Albert Coons: harnessing the power of the antibody. Lancet Respir Med. 2016;4:181-182.
  2. Coons AH, Creech HJ, Jones RN. Immunological properties of an antibody containing a fluorescent group. Proc Soc Exp Biol Med. 1941;47:200-202.
  3. Coons AH, Creech HJ, Jones RN, et al. The demonstration of pneumococcal antigen in tissues by the use of fluorescent antibody. J Immunol. 1942;45:159-170.
  4. Burnham TK, Neblett TR, Fine G. The application of the fluorescent antibody technic to the investigation of lupus erythematosus and various dermatoses. J Invest Dermatol. 1963;41:451-456.
  5. Jordon RE, Beutner EH, Witebsky E, et al. Basement zone antibodies in bullous pemphigoid. JAMA. 1967;200:751-756.
  6. Vaughan Jones SA, Salas J, McGrath JA, et al. A retrospective analysis of tissue-fixed immunoreactants from skin biopsies maintained in Michel’s medium. Dermatology. 1994;189(suppl 1):131-132.
  7. Kim RH, Brinster NK. Practical direct immunofluorescence. Am J Dermatopathol. 2020;42:75-85.
  8. Vodegel RM, de Jong MC, Meijer HJ, et al. Enhanced diagnostic immunofluorescence using biopsies transported in saline. BMC Dermatol. 2004;4:10.
  9. Arbesman J, Grover R, Helm TN, et al. Can direct immunofluorescence testing still be accurate if performed on biopsy specimens after brief inadvertent immersion in formalin? J Am Acad Dermatol. 2011;65:106-111.
  10. Im K, Mareninov S, Diaz MFP, et al. An introduction to performing immunofluorescence staining. Methods Mol Biol. 2019;1897:299-311.
  11. Saschenbrecker S, Karl I, Komorowski L, et al. Serological diagnosis of autoimmune bullous skin diseases. Front Immunol. 2019;10:1974.
  12. Baum S, Sakka N, Artsi O, et al. Diagnosis and classification of autoimmune blistering diseases. Autoimmun Rev. 2014;13:482-489.
  13. Immunobullous disease panel, epithelial. ARUP Laboratories website. Accessed November 22, 2021. https://ltd.aruplab.com/Tests/Pub/3001409
  14. Monshi B, Gulz L, Piringer B, et al. Anti-BP180 autoantibody levels at diagnosis correlate with 1-year mortality rates in patients with bullous pemphigoid. J Eur Acad Dermatol Venereol. 2020;34:1583-1589.
  15. Koga H, Teye K, Ishii N, et al. High index values of enzyme-linked immunosorbent assay for BP180 at baseline predict relapse in patients with bullous pemphigoid. Front Med (Lausanne). 2018;5:139.
  16. Fichel F, Barbe C, Joly P, et al. Clinical and immunologic factors associated with bullous pemphigoid relapse during the first year of treatment: a multicenter, prospective study. JAMA Dermatol. 2014;150:25-33.
  17. Cai SC, Lim YL, Li W, et al. Anti-BP180 NC16A IgG titres as an indicator of disease activity and outcome in Asian patients with bullous pemphigoid. Ann Acad Med Singap. 2015;44:119-126.
  18. Genovese G, Maronese CA, Casazza G, et al. Clinical and serological predictors of relapse in pemphigus: a study of 143 patients [published online July 20, 2021]. Clin Exp Dermatol. doi:10.1111/ced.14854
  19. Weigand DA. Effect of anatomic region on immunofluorescence diagnosis of bullous pemphigoid. J Am Acad Dermatol. 1985;12(2, pt 1):274-278.
  20. Weigand DA, Clements MK. Direct immunofluorescence in bullous pemphigoid: effects of extent and location of lesions. J Am Acad Dermatol. 1989;20:437-440.
  21. Mutasim DF, Adams BB. Immunofluorescence in dermatology. J Am Acad Dermatol. 2001;45:803-822; quiz 822-824.
  22. Sladden C, Kirchhof MG, Crawford RI. Biopsy location for direct immunofluorescence in patients with suspected bullous pemphigoid impacts probability of a positive test result. J Cutan Med Surg. 2014;18:392-396.
  23. Elston DM, Stratman EJ, Miller SJ. Skin biopsy: biopsy issues in specific diseases. J Am Acad Dermatol. 2016;74:1-16; quiz 17-18.
  24. Seishima M, Izumi T, Kitajima Y. Antibody to bullous pemphigoid antigen 1 binds to the antigen at perilesional but not uninvolved skin, in localized bullous pemphigoid. Eur J Dermatol. 1999;9:39-42.
  25. Zone JJ, Meyer LJ, Petersen MJ. Deposition of granular IgA relative to clinical lesions in dermatitis herpetiformis. Arch Dermatol. 1996;132:912-918.
  26. Kamaguchi M, Iwata H, Ujiie I, et al. Direct immunofluorescence using non-lesional buccal mucosa in mucous membrane pemphigoid. Front Med (Lausanne). 2018;5:20.
  27. Carey B, Joshi S, Abdelghani A, et al. The optimal oral biopsy site for diagnosis of mucous membrane pemphigoid and pemphigus vulgaris. Br J Dermatol. 2020;182:747-753.
  28. Kulthanan K, Pinkaew S, Jiamton S, et al. Cutaneous leukocytoclastic vasculitis: the yield of direct immunofluorescence study. J Med Assoc Thai. 2004;87:531-535.
  29. Chaidemenos GC, Maltezos E, Chrysomallis F, et al. Value of routine diagnostic criteria of bullous pemphigoid. Int J Dermatol. 1998;37:206-210.
  30. Mysorekar VV, Sumathy TK, Shyam Prasad AL. Role of direct immunofluorescence in dermatological disorders. Indian Dermatol Online J. 2015;6:172-180.
  31. Fudge JG, Crawford RI. Bullous pemphigoid: a 10-year study of discordant results on direct immunofluorescence. J Cutan Med Surg. 2018;22:472-475.
  32. Sárdy M, Kostaki D, Varga R, et al. Comparative study of direct and indirect immunofluorescence and of bullous pemphigoid 180 and 230 enzyme-linked immunosorbent assays for diagnosis of bullous pemphigoid. J Am Acad Dermatol. 2013;69:748-753.
  33. Buch AC, Kumar H, Panicker N, et al. A cross-sectional study of direct immunofluorescence in the diagnosis of immunobullous dermatoses. Indian J Dermatol. 2014;59:364-368.
  34. Miller DD, Bhawan J. Bullous tinea pedis with direct immunofluorescence positivity: when is a positive result not autoimmune bullous disease? Am J Dermatopathol. 2013;35:587-594.
  35. Cao R, Lau S, Tan V, et al. Adult Henoch-Schönlein purpura: clinical and histopathological predictors of systemic disease and profound renal disease. Indian J Dermatol Venereol Leprol. 2017;83:577-582.
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The author reports no conflict of interest.

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Direct immunofluorescence (DIF) is the go-to diagnostic test when evaluating vesiculobullous eruptions, connective tissue disease, and vasculitis. This specialized test allows visualization of autoantibodies and their reaction products in the epidermis and dermis (skin) and epithelium and subepithelium (mucosa). Indirect immunofluorescence (IIF) and enzyme-linked immunosorbent assay (ELISA) are additional tests that can help in the diagnosis of autoimmune blistering disease. In the blistering autoimmune diseases, the autoantibodies target components in skin and mucous membranes that are essential for cell-cell and cell-matrix adhesion causing separation within or beneath the epidermis, depending on where the target components are located. This article is intended to serve as a helpful primer for immunofluorescence testing in dermatology, with an overview of the tests available as well as pragmatic tips for optimal biopsy sites and specimen transport.

Direct Immunofluorescence

Immunofluorescence techniques date back to 1941 when Albert Coons, an American physician, pathologist, and immunologist, fluorescently labelled antibodies to visualize pneumococcal antigens in infected tissues.1-3 In dermatology, similar methodology was used to visualize the deposition of immunoglobulins and complement in the skin of patients with systemic lupus erythematosus in 1963.4 Basement membrane zone antibodies were first visualized via DIF in bullous pemphigoid in 1967.5 This elegant test utilizes specific antibodies labeled with fluorophores that are then incubated with the patient’s tissue, ultimately forming antibody-antigen conjugates that can be visualized with a fluorescent microscope. Antibodies usually include IgG, IgM, IgA, fibrinogen, and C3. Some institutions also evaluate for IgG4.

Transport medium is critical for proper evaluation of tissues using DIF. Inappropriate storage of tissue can degrade the antigen and confuse the interpretation of specimens. An acceptable medium for DIF includes Michel transport medium, which allows tissue to be stored for days while being transported at ambient temperature without loss of signal.6,7 Zeus medium also can be used and is more readily available. Alternatively, biopsy tissue can be snap frozen using liquid nitrogen. Specimens also may be stored on saline gauze but should be analyzed within 24 to 48 hours.8 Most importantly, do not place the specimen in formalin; even a brief soak in formalin can greatly alter results, especially when trying to diagnose pemphigus.9 Proper transport conditions are critical to prevent autolysis, mitigate putrefaction, and preserve morphology while maintaining antigenicity.10

 

Indirect Immunofluorescence

Indirect immunofluorescence can be helpful for detecting antibodies circulating in patient serum. Indirect immunofluorescence can be used to help diagnose pemphigoid, pemphigus, epidermolysis bullosa acquisita, bullous lupus erythematosus, and dermatitis herpetiformis. Serum testing also can be a helpful alternative when obtaining tissue is difficult, such as in children.

Indirect immunofluorescence is a 2-part technique that takes a bit longer to assay than DIF.11 The first step involves incubating prepared tissue substrates with patient serum. Unlabeled antibodies in the patient serum are allowed to bind to antigens in the substrate tissue for about 30 minutes. Doubling dilutions of patient serum can be performed to titer antibody levels. The second step uses fluorescein-labeled antihuman antibodies to recognize the antigen-antibody conjugates. Normal whole tissues (eg, monkey esophagus for pemphigus vulgaris, rat bladder for paraneoplastic pemphigus, salt-split normal human skin substrate for pemphigoid and epidermolysis bullosa) are the usual substrates for testing.11,12 Again, this test requires serum and should be collected in a red-top tube or serum-separator tube. Usually, a minimum of 0.5 mL is required for testing, but check with your preferred immunodermatology send-out laboratory before collecting.13

Indirect immunofluorescence usually involves an initial screening panel using 1 or 2 tissue substrates followed by individual antigen-specific assays that correspond to the clinical suspicion and IIF screening results.11 Salt-split skin is used to localize basement membrane zone autoantibodies to either the epidermal (roof) or dermal (floor) side. Although many dermatopathology laboratories offer DIF testing, IIF is more specialized and may be a send-out test at your institution.

Enzyme-linked Immunosorbent Assays

Another tool in the immunodermatology armamentarium is ELISA. Commercial ELISA systems are available for the detection of autoantibodies against bullous pemphigoid (BP) antigen 180, BP230, type VII collagen, desmoglein (Dsg) 1, Dsg3, and envoplakin.11 This test allows semiquantitative measurement of antibody levels and thus can be used to monitor response to treatment or identify relapse and treatment failure.11 For example, in BP, significantly increased baseline anti-BP180 IgG levels correlate with 1-year mortality rates (P=.001) and relapse rates (P=.041).14,15 Numerous additional studies support the observation that monitoring anti-BP180 as a potential marker of disease relapse can be helpful.16,17 In pemphigus, the presence or increase of autoantibodies at remission, either anti-Dsg3 or anti-Dsg1, may be a useful tool in predicting disease relapse.18 It is important for physicians to be aware of this to be able to offer guidance on prognosis.

 

 

Where Should I Biopsy?

Knowing where to biopsy can be confusing when beginning residency. But the short answer is, it depends. Let your clinical suspicion guide your specimen site. The Figure provides a quick reference for which location will give you the highest yield for a specific diagnosis.

Preferred sites for biopsy specimens for direct immunofluorescence (DIF) in autoimmune bullous disorders. BP indicates bullous pemphigoid; DH, dermatitis herpetiformis.

A few cardinal rules should guide which site is biopsied. Avoid obtaining specimens from the lower extremities as much as possible, as this site has been linked with false-negative results, especially in bullous pemphigoid.19,20 As a dependent area prone to stasis, this site gets a lot of abuse and inflammatory changes secondary to everyday insults that can theoretically alter DIF findings, especially fibrinogen deposition.

Although tissue sent for hematoxylin and eosin staining should be lesional, biopsy for DIF ideally should not contain a new or active blister, ulcer, erosion, or bulla. Immunoreactants are more likely to be degraded in these areas, and DIF may be falsely negative.21

It is worthwhile to briefly discuss the definitions of the terms perilesional and nonlesional. Perilesional skin most frequently refers to skin adjacent to a bulla or vesicle. This skin can be erythematous/inflamed or appear normal. When obtaining tissue for a diagnosis of blistering disease, the general recommendation is to obtain the biopsy from lesional nonbullous skin or perilesional uninvolved skin within 1 cm of the bulla.22-24 The only exception to this is dermatitis herpetiformis, which is best diagnosed on tissue obtained from normal-appearing perilesional skin within 1 cm of an active lesion.25 Additionally, if your patient has oral disease, the recommendation is to obtain the biopsy from nonlesional buccal mucosa, especially if there is desquamative gingivitis.26,27

The ideal biopsy size is 4 or 5 mm. If considering both DIF and histopathology, it is best to procure 2 separate specimens. One larger biopsy can be carefully bisected in 2 but often is subject to more handling artifacts, which can affect findings. In the case of 1 biopsy bisected into 2 specimens, the punch should be at least 6 mm. Shave biopsies also can be performed as long as they extend into the reticular dermis.23

 

 

For vasculitis, biopsies for DIF should be taken from lesions that are less than 24 hours old for highest yield, as the level of tissue immunoreactants tends to decline over time.28 This guideline does differ from hematoxylin and eosin specimens sent for evaluation of vasculitis, which ideally should be lesional tissue over 72 hours old. When evaluating for lupus (including subacute cutaneous lupus, discoid lupus, and systemic lupus), DIF is more likely to be positive in well-established, active lesions.

Which Test Should I Order?

The answer to this question depends, but the use of all 3 tests has a specificity close to 100% when evaluating for autoantibody-associated diseases.23 For autoimmune blistering disease, DIF is considered the diagnostic standard. The sensitivity of DIF for diagnosing BP is in the range of 82% to 90.5%, while specificity is 98%.29-31 Other autoimmune blistering diseases, such as pemphigus or dermatitis herpetiformis, have even higher sensitivities and specificities. Direct immunofluorescence often is used as a screening test, but false negatives do occur.32,33 Although rare, false positives also can occur, especially in cases of infection, and should be suspected when there is a lack of clinicopathologic correlation.34 If DIF is negative but clinical suspicion remains high, IIF should be ordered to directly evaluate a patient’s serum for autoantibodies.

In acute cutaneous lupus, subacute cutaneous lupus, and discoid lupus, DIF of active lesions may be helpful if histopathologic examination of a cutaneous lupus erythematosus lesion is nondiagnostic. However, histopathologic examination of formalin-fixed tissue remains the standard for these diagnoses. In vasculitis, while DIF is not used for diagnosis, it is useful to evaluate for IgA deposition. This is important in adults, as IgA deposition has been associated with a greater risk for developing end-stage renal disease.35

 

Final Thoughts

This is an overview of the tests available for diagnosing autoimmune blistering diseases. Residents should keep in mind that these tests are just one part of the puzzle when it comes to diagnosing these diseases. Results of DIF, IIF, and ELISA testing should be considered in conjunction with patient history and physical examination as well as histopathologic examination of lesional tissue when evaluating for dermatologic diseases with autoantibodies.

Direct immunofluorescence (DIF) is the go-to diagnostic test when evaluating vesiculobullous eruptions, connective tissue disease, and vasculitis. This specialized test allows visualization of autoantibodies and their reaction products in the epidermis and dermis (skin) and epithelium and subepithelium (mucosa). Indirect immunofluorescence (IIF) and enzyme-linked immunosorbent assay (ELISA) are additional tests that can help in the diagnosis of autoimmune blistering disease. In the blistering autoimmune diseases, the autoantibodies target components in skin and mucous membranes that are essential for cell-cell and cell-matrix adhesion causing separation within or beneath the epidermis, depending on where the target components are located. This article is intended to serve as a helpful primer for immunofluorescence testing in dermatology, with an overview of the tests available as well as pragmatic tips for optimal biopsy sites and specimen transport.

Direct Immunofluorescence

Immunofluorescence techniques date back to 1941 when Albert Coons, an American physician, pathologist, and immunologist, fluorescently labelled antibodies to visualize pneumococcal antigens in infected tissues.1-3 In dermatology, similar methodology was used to visualize the deposition of immunoglobulins and complement in the skin of patients with systemic lupus erythematosus in 1963.4 Basement membrane zone antibodies were first visualized via DIF in bullous pemphigoid in 1967.5 This elegant test utilizes specific antibodies labeled with fluorophores that are then incubated with the patient’s tissue, ultimately forming antibody-antigen conjugates that can be visualized with a fluorescent microscope. Antibodies usually include IgG, IgM, IgA, fibrinogen, and C3. Some institutions also evaluate for IgG4.

Transport medium is critical for proper evaluation of tissues using DIF. Inappropriate storage of tissue can degrade the antigen and confuse the interpretation of specimens. An acceptable medium for DIF includes Michel transport medium, which allows tissue to be stored for days while being transported at ambient temperature without loss of signal.6,7 Zeus medium also can be used and is more readily available. Alternatively, biopsy tissue can be snap frozen using liquid nitrogen. Specimens also may be stored on saline gauze but should be analyzed within 24 to 48 hours.8 Most importantly, do not place the specimen in formalin; even a brief soak in formalin can greatly alter results, especially when trying to diagnose pemphigus.9 Proper transport conditions are critical to prevent autolysis, mitigate putrefaction, and preserve morphology while maintaining antigenicity.10

 

Indirect Immunofluorescence

Indirect immunofluorescence can be helpful for detecting antibodies circulating in patient serum. Indirect immunofluorescence can be used to help diagnose pemphigoid, pemphigus, epidermolysis bullosa acquisita, bullous lupus erythematosus, and dermatitis herpetiformis. Serum testing also can be a helpful alternative when obtaining tissue is difficult, such as in children.

Indirect immunofluorescence is a 2-part technique that takes a bit longer to assay than DIF.11 The first step involves incubating prepared tissue substrates with patient serum. Unlabeled antibodies in the patient serum are allowed to bind to antigens in the substrate tissue for about 30 minutes. Doubling dilutions of patient serum can be performed to titer antibody levels. The second step uses fluorescein-labeled antihuman antibodies to recognize the antigen-antibody conjugates. Normal whole tissues (eg, monkey esophagus for pemphigus vulgaris, rat bladder for paraneoplastic pemphigus, salt-split normal human skin substrate for pemphigoid and epidermolysis bullosa) are the usual substrates for testing.11,12 Again, this test requires serum and should be collected in a red-top tube or serum-separator tube. Usually, a minimum of 0.5 mL is required for testing, but check with your preferred immunodermatology send-out laboratory before collecting.13

Indirect immunofluorescence usually involves an initial screening panel using 1 or 2 tissue substrates followed by individual antigen-specific assays that correspond to the clinical suspicion and IIF screening results.11 Salt-split skin is used to localize basement membrane zone autoantibodies to either the epidermal (roof) or dermal (floor) side. Although many dermatopathology laboratories offer DIF testing, IIF is more specialized and may be a send-out test at your institution.

Enzyme-linked Immunosorbent Assays

Another tool in the immunodermatology armamentarium is ELISA. Commercial ELISA systems are available for the detection of autoantibodies against bullous pemphigoid (BP) antigen 180, BP230, type VII collagen, desmoglein (Dsg) 1, Dsg3, and envoplakin.11 This test allows semiquantitative measurement of antibody levels and thus can be used to monitor response to treatment or identify relapse and treatment failure.11 For example, in BP, significantly increased baseline anti-BP180 IgG levels correlate with 1-year mortality rates (P=.001) and relapse rates (P=.041).14,15 Numerous additional studies support the observation that monitoring anti-BP180 as a potential marker of disease relapse can be helpful.16,17 In pemphigus, the presence or increase of autoantibodies at remission, either anti-Dsg3 or anti-Dsg1, may be a useful tool in predicting disease relapse.18 It is important for physicians to be aware of this to be able to offer guidance on prognosis.

 

 

Where Should I Biopsy?

Knowing where to biopsy can be confusing when beginning residency. But the short answer is, it depends. Let your clinical suspicion guide your specimen site. The Figure provides a quick reference for which location will give you the highest yield for a specific diagnosis.

Preferred sites for biopsy specimens for direct immunofluorescence (DIF) in autoimmune bullous disorders. BP indicates bullous pemphigoid; DH, dermatitis herpetiformis.

A few cardinal rules should guide which site is biopsied. Avoid obtaining specimens from the lower extremities as much as possible, as this site has been linked with false-negative results, especially in bullous pemphigoid.19,20 As a dependent area prone to stasis, this site gets a lot of abuse and inflammatory changes secondary to everyday insults that can theoretically alter DIF findings, especially fibrinogen deposition.

Although tissue sent for hematoxylin and eosin staining should be lesional, biopsy for DIF ideally should not contain a new or active blister, ulcer, erosion, or bulla. Immunoreactants are more likely to be degraded in these areas, and DIF may be falsely negative.21

It is worthwhile to briefly discuss the definitions of the terms perilesional and nonlesional. Perilesional skin most frequently refers to skin adjacent to a bulla or vesicle. This skin can be erythematous/inflamed or appear normal. When obtaining tissue for a diagnosis of blistering disease, the general recommendation is to obtain the biopsy from lesional nonbullous skin or perilesional uninvolved skin within 1 cm of the bulla.22-24 The only exception to this is dermatitis herpetiformis, which is best diagnosed on tissue obtained from normal-appearing perilesional skin within 1 cm of an active lesion.25 Additionally, if your patient has oral disease, the recommendation is to obtain the biopsy from nonlesional buccal mucosa, especially if there is desquamative gingivitis.26,27

The ideal biopsy size is 4 or 5 mm. If considering both DIF and histopathology, it is best to procure 2 separate specimens. One larger biopsy can be carefully bisected in 2 but often is subject to more handling artifacts, which can affect findings. In the case of 1 biopsy bisected into 2 specimens, the punch should be at least 6 mm. Shave biopsies also can be performed as long as they extend into the reticular dermis.23

 

 

For vasculitis, biopsies for DIF should be taken from lesions that are less than 24 hours old for highest yield, as the level of tissue immunoreactants tends to decline over time.28 This guideline does differ from hematoxylin and eosin specimens sent for evaluation of vasculitis, which ideally should be lesional tissue over 72 hours old. When evaluating for lupus (including subacute cutaneous lupus, discoid lupus, and systemic lupus), DIF is more likely to be positive in well-established, active lesions.

Which Test Should I Order?

The answer to this question depends, but the use of all 3 tests has a specificity close to 100% when evaluating for autoantibody-associated diseases.23 For autoimmune blistering disease, DIF is considered the diagnostic standard. The sensitivity of DIF for diagnosing BP is in the range of 82% to 90.5%, while specificity is 98%.29-31 Other autoimmune blistering diseases, such as pemphigus or dermatitis herpetiformis, have even higher sensitivities and specificities. Direct immunofluorescence often is used as a screening test, but false negatives do occur.32,33 Although rare, false positives also can occur, especially in cases of infection, and should be suspected when there is a lack of clinicopathologic correlation.34 If DIF is negative but clinical suspicion remains high, IIF should be ordered to directly evaluate a patient’s serum for autoantibodies.

In acute cutaneous lupus, subacute cutaneous lupus, and discoid lupus, DIF of active lesions may be helpful if histopathologic examination of a cutaneous lupus erythematosus lesion is nondiagnostic. However, histopathologic examination of formalin-fixed tissue remains the standard for these diagnoses. In vasculitis, while DIF is not used for diagnosis, it is useful to evaluate for IgA deposition. This is important in adults, as IgA deposition has been associated with a greater risk for developing end-stage renal disease.35

 

Final Thoughts

This is an overview of the tests available for diagnosing autoimmune blistering diseases. Residents should keep in mind that these tests are just one part of the puzzle when it comes to diagnosing these diseases. Results of DIF, IIF, and ELISA testing should be considered in conjunction with patient history and physical examination as well as histopathologic examination of lesional tissue when evaluating for dermatologic diseases with autoantibodies.

References
  1. Arthur G. Albert Coons: harnessing the power of the antibody. Lancet Respir Med. 2016;4:181-182.
  2. Coons AH, Creech HJ, Jones RN. Immunological properties of an antibody containing a fluorescent group. Proc Soc Exp Biol Med. 1941;47:200-202.
  3. Coons AH, Creech HJ, Jones RN, et al. The demonstration of pneumococcal antigen in tissues by the use of fluorescent antibody. J Immunol. 1942;45:159-170.
  4. Burnham TK, Neblett TR, Fine G. The application of the fluorescent antibody technic to the investigation of lupus erythematosus and various dermatoses. J Invest Dermatol. 1963;41:451-456.
  5. Jordon RE, Beutner EH, Witebsky E, et al. Basement zone antibodies in bullous pemphigoid. JAMA. 1967;200:751-756.
  6. Vaughan Jones SA, Salas J, McGrath JA, et al. A retrospective analysis of tissue-fixed immunoreactants from skin biopsies maintained in Michel’s medium. Dermatology. 1994;189(suppl 1):131-132.
  7. Kim RH, Brinster NK. Practical direct immunofluorescence. Am J Dermatopathol. 2020;42:75-85.
  8. Vodegel RM, de Jong MC, Meijer HJ, et al. Enhanced diagnostic immunofluorescence using biopsies transported in saline. BMC Dermatol. 2004;4:10.
  9. Arbesman J, Grover R, Helm TN, et al. Can direct immunofluorescence testing still be accurate if performed on biopsy specimens after brief inadvertent immersion in formalin? J Am Acad Dermatol. 2011;65:106-111.
  10. Im K, Mareninov S, Diaz MFP, et al. An introduction to performing immunofluorescence staining. Methods Mol Biol. 2019;1897:299-311.
  11. Saschenbrecker S, Karl I, Komorowski L, et al. Serological diagnosis of autoimmune bullous skin diseases. Front Immunol. 2019;10:1974.
  12. Baum S, Sakka N, Artsi O, et al. Diagnosis and classification of autoimmune blistering diseases. Autoimmun Rev. 2014;13:482-489.
  13. Immunobullous disease panel, epithelial. ARUP Laboratories website. Accessed November 22, 2021. https://ltd.aruplab.com/Tests/Pub/3001409
  14. Monshi B, Gulz L, Piringer B, et al. Anti-BP180 autoantibody levels at diagnosis correlate with 1-year mortality rates in patients with bullous pemphigoid. J Eur Acad Dermatol Venereol. 2020;34:1583-1589.
  15. Koga H, Teye K, Ishii N, et al. High index values of enzyme-linked immunosorbent assay for BP180 at baseline predict relapse in patients with bullous pemphigoid. Front Med (Lausanne). 2018;5:139.
  16. Fichel F, Barbe C, Joly P, et al. Clinical and immunologic factors associated with bullous pemphigoid relapse during the first year of treatment: a multicenter, prospective study. JAMA Dermatol. 2014;150:25-33.
  17. Cai SC, Lim YL, Li W, et al. Anti-BP180 NC16A IgG titres as an indicator of disease activity and outcome in Asian patients with bullous pemphigoid. Ann Acad Med Singap. 2015;44:119-126.
  18. Genovese G, Maronese CA, Casazza G, et al. Clinical and serological predictors of relapse in pemphigus: a study of 143 patients [published online July 20, 2021]. Clin Exp Dermatol. doi:10.1111/ced.14854
  19. Weigand DA. Effect of anatomic region on immunofluorescence diagnosis of bullous pemphigoid. J Am Acad Dermatol. 1985;12(2, pt 1):274-278.
  20. Weigand DA, Clements MK. Direct immunofluorescence in bullous pemphigoid: effects of extent and location of lesions. J Am Acad Dermatol. 1989;20:437-440.
  21. Mutasim DF, Adams BB. Immunofluorescence in dermatology. J Am Acad Dermatol. 2001;45:803-822; quiz 822-824.
  22. Sladden C, Kirchhof MG, Crawford RI. Biopsy location for direct immunofluorescence in patients with suspected bullous pemphigoid impacts probability of a positive test result. J Cutan Med Surg. 2014;18:392-396.
  23. Elston DM, Stratman EJ, Miller SJ. Skin biopsy: biopsy issues in specific diseases. J Am Acad Dermatol. 2016;74:1-16; quiz 17-18.
  24. Seishima M, Izumi T, Kitajima Y. Antibody to bullous pemphigoid antigen 1 binds to the antigen at perilesional but not uninvolved skin, in localized bullous pemphigoid. Eur J Dermatol. 1999;9:39-42.
  25. Zone JJ, Meyer LJ, Petersen MJ. Deposition of granular IgA relative to clinical lesions in dermatitis herpetiformis. Arch Dermatol. 1996;132:912-918.
  26. Kamaguchi M, Iwata H, Ujiie I, et al. Direct immunofluorescence using non-lesional buccal mucosa in mucous membrane pemphigoid. Front Med (Lausanne). 2018;5:20.
  27. Carey B, Joshi S, Abdelghani A, et al. The optimal oral biopsy site for diagnosis of mucous membrane pemphigoid and pemphigus vulgaris. Br J Dermatol. 2020;182:747-753.
  28. Kulthanan K, Pinkaew S, Jiamton S, et al. Cutaneous leukocytoclastic vasculitis: the yield of direct immunofluorescence study. J Med Assoc Thai. 2004;87:531-535.
  29. Chaidemenos GC, Maltezos E, Chrysomallis F, et al. Value of routine diagnostic criteria of bullous pemphigoid. Int J Dermatol. 1998;37:206-210.
  30. Mysorekar VV, Sumathy TK, Shyam Prasad AL. Role of direct immunofluorescence in dermatological disorders. Indian Dermatol Online J. 2015;6:172-180.
  31. Fudge JG, Crawford RI. Bullous pemphigoid: a 10-year study of discordant results on direct immunofluorescence. J Cutan Med Surg. 2018;22:472-475.
  32. Sárdy M, Kostaki D, Varga R, et al. Comparative study of direct and indirect immunofluorescence and of bullous pemphigoid 180 and 230 enzyme-linked immunosorbent assays for diagnosis of bullous pemphigoid. J Am Acad Dermatol. 2013;69:748-753.
  33. Buch AC, Kumar H, Panicker N, et al. A cross-sectional study of direct immunofluorescence in the diagnosis of immunobullous dermatoses. Indian J Dermatol. 2014;59:364-368.
  34. Miller DD, Bhawan J. Bullous tinea pedis with direct immunofluorescence positivity: when is a positive result not autoimmune bullous disease? Am J Dermatopathol. 2013;35:587-594.
  35. Cao R, Lau S, Tan V, et al. Adult Henoch-Schönlein purpura: clinical and histopathological predictors of systemic disease and profound renal disease. Indian J Dermatol Venereol Leprol. 2017;83:577-582.
References
  1. Arthur G. Albert Coons: harnessing the power of the antibody. Lancet Respir Med. 2016;4:181-182.
  2. Coons AH, Creech HJ, Jones RN. Immunological properties of an antibody containing a fluorescent group. Proc Soc Exp Biol Med. 1941;47:200-202.
  3. Coons AH, Creech HJ, Jones RN, et al. The demonstration of pneumococcal antigen in tissues by the use of fluorescent antibody. J Immunol. 1942;45:159-170.
  4. Burnham TK, Neblett TR, Fine G. The application of the fluorescent antibody technic to the investigation of lupus erythematosus and various dermatoses. J Invest Dermatol. 1963;41:451-456.
  5. Jordon RE, Beutner EH, Witebsky E, et al. Basement zone antibodies in bullous pemphigoid. JAMA. 1967;200:751-756.
  6. Vaughan Jones SA, Salas J, McGrath JA, et al. A retrospective analysis of tissue-fixed immunoreactants from skin biopsies maintained in Michel’s medium. Dermatology. 1994;189(suppl 1):131-132.
  7. Kim RH, Brinster NK. Practical direct immunofluorescence. Am J Dermatopathol. 2020;42:75-85.
  8. Vodegel RM, de Jong MC, Meijer HJ, et al. Enhanced diagnostic immunofluorescence using biopsies transported in saline. BMC Dermatol. 2004;4:10.
  9. Arbesman J, Grover R, Helm TN, et al. Can direct immunofluorescence testing still be accurate if performed on biopsy specimens after brief inadvertent immersion in formalin? J Am Acad Dermatol. 2011;65:106-111.
  10. Im K, Mareninov S, Diaz MFP, et al. An introduction to performing immunofluorescence staining. Methods Mol Biol. 2019;1897:299-311.
  11. Saschenbrecker S, Karl I, Komorowski L, et al. Serological diagnosis of autoimmune bullous skin diseases. Front Immunol. 2019;10:1974.
  12. Baum S, Sakka N, Artsi O, et al. Diagnosis and classification of autoimmune blistering diseases. Autoimmun Rev. 2014;13:482-489.
  13. Immunobullous disease panel, epithelial. ARUP Laboratories website. Accessed November 22, 2021. https://ltd.aruplab.com/Tests/Pub/3001409
  14. Monshi B, Gulz L, Piringer B, et al. Anti-BP180 autoantibody levels at diagnosis correlate with 1-year mortality rates in patients with bullous pemphigoid. J Eur Acad Dermatol Venereol. 2020;34:1583-1589.
  15. Koga H, Teye K, Ishii N, et al. High index values of enzyme-linked immunosorbent assay for BP180 at baseline predict relapse in patients with bullous pemphigoid. Front Med (Lausanne). 2018;5:139.
  16. Fichel F, Barbe C, Joly P, et al. Clinical and immunologic factors associated with bullous pemphigoid relapse during the first year of treatment: a multicenter, prospective study. JAMA Dermatol. 2014;150:25-33.
  17. Cai SC, Lim YL, Li W, et al. Anti-BP180 NC16A IgG titres as an indicator of disease activity and outcome in Asian patients with bullous pemphigoid. Ann Acad Med Singap. 2015;44:119-126.
  18. Genovese G, Maronese CA, Casazza G, et al. Clinical and serological predictors of relapse in pemphigus: a study of 143 patients [published online July 20, 2021]. Clin Exp Dermatol. doi:10.1111/ced.14854
  19. Weigand DA. Effect of anatomic region on immunofluorescence diagnosis of bullous pemphigoid. J Am Acad Dermatol. 1985;12(2, pt 1):274-278.
  20. Weigand DA, Clements MK. Direct immunofluorescence in bullous pemphigoid: effects of extent and location of lesions. J Am Acad Dermatol. 1989;20:437-440.
  21. Mutasim DF, Adams BB. Immunofluorescence in dermatology. J Am Acad Dermatol. 2001;45:803-822; quiz 822-824.
  22. Sladden C, Kirchhof MG, Crawford RI. Biopsy location for direct immunofluorescence in patients with suspected bullous pemphigoid impacts probability of a positive test result. J Cutan Med Surg. 2014;18:392-396.
  23. Elston DM, Stratman EJ, Miller SJ. Skin biopsy: biopsy issues in specific diseases. J Am Acad Dermatol. 2016;74:1-16; quiz 17-18.
  24. Seishima M, Izumi T, Kitajima Y. Antibody to bullous pemphigoid antigen 1 binds to the antigen at perilesional but not uninvolved skin, in localized bullous pemphigoid. Eur J Dermatol. 1999;9:39-42.
  25. Zone JJ, Meyer LJ, Petersen MJ. Deposition of granular IgA relative to clinical lesions in dermatitis herpetiformis. Arch Dermatol. 1996;132:912-918.
  26. Kamaguchi M, Iwata H, Ujiie I, et al. Direct immunofluorescence using non-lesional buccal mucosa in mucous membrane pemphigoid. Front Med (Lausanne). 2018;5:20.
  27. Carey B, Joshi S, Abdelghani A, et al. The optimal oral biopsy site for diagnosis of mucous membrane pemphigoid and pemphigus vulgaris. Br J Dermatol. 2020;182:747-753.
  28. Kulthanan K, Pinkaew S, Jiamton S, et al. Cutaneous leukocytoclastic vasculitis: the yield of direct immunofluorescence study. J Med Assoc Thai. 2004;87:531-535.
  29. Chaidemenos GC, Maltezos E, Chrysomallis F, et al. Value of routine diagnostic criteria of bullous pemphigoid. Int J Dermatol. 1998;37:206-210.
  30. Mysorekar VV, Sumathy TK, Shyam Prasad AL. Role of direct immunofluorescence in dermatological disorders. Indian Dermatol Online J. 2015;6:172-180.
  31. Fudge JG, Crawford RI. Bullous pemphigoid: a 10-year study of discordant results on direct immunofluorescence. J Cutan Med Surg. 2018;22:472-475.
  32. Sárdy M, Kostaki D, Varga R, et al. Comparative study of direct and indirect immunofluorescence and of bullous pemphigoid 180 and 230 enzyme-linked immunosorbent assays for diagnosis of bullous pemphigoid. J Am Acad Dermatol. 2013;69:748-753.
  33. Buch AC, Kumar H, Panicker N, et al. A cross-sectional study of direct immunofluorescence in the diagnosis of immunobullous dermatoses. Indian J Dermatol. 2014;59:364-368.
  34. Miller DD, Bhawan J. Bullous tinea pedis with direct immunofluorescence positivity: when is a positive result not autoimmune bullous disease? Am J Dermatopathol. 2013;35:587-594.
  35. Cao R, Lau S, Tan V, et al. Adult Henoch-Schönlein purpura: clinical and histopathological predictors of systemic disease and profound renal disease. Indian J Dermatol Venereol Leprol. 2017;83:577-582.
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Evaluation of Intermittent Energy Restriction and Continuous Energy Restriction on Weight Loss and Blood Pressure Control in Overweight and Obese Patients With Hypertension

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Evaluation of Intermittent Energy Restriction and Continuous Energy Restriction on Weight Loss and Blood Pressure Control in Overweight and Obese Patients With Hypertension

Study Overview

Objective. To compare the effects of intermittent energy restriction (IER) with those of continuous energy restriction (CER) on blood pressure control and weight loss in overweight and obese patients with hypertension during a 6-month period.

Design. Randomized controlled trial.

Settings and participants. The trial was conducted at the Affiliated Hospital of Jiaxing University from June 1, 2020, to April 30, 2021. Chinese adults were recruited using advertisements and flyers posted in the hospital and local communities. Prior to participation in study activities, all participants gave informed consent prior to recruitment and were provided compensation in the form of a $38 voucher at 3 and 6 months for their time for participating in the study.

The main inclusion criteria were patients between the ages of 18 and 70 years, hypertension, and body mass index (BMI) ranging from 24 to 40 kg/m2. The exclusion criteria were systolic blood pressure (SBP) ≥ 180 mmHg or diastolic blood pressure (DBP) ≥ 120 mmHg, type 1 or 2 diabetes with a history of severe hypoglycemic episodes, pregnancy or breastfeeding, usage of glucagon-like peptide 1 receptor agonists, weight loss > 5 kg within the past 3 months or previous weight loss surgery, and inability to adhere to the dietary protocol.

Of the 294 participants screened for eligibility, 205 were randomized in a 1:1 ratio to the IER group (n = 102) or the CER group (n = 103), stratified by sex and BMI (as overweight or obese). All participants were required to have a stable medication regimen and weight in the 3 months prior to enrollment and not to use weight-loss drugs or vitamin supplements for the duration of the study. Researchers and participants were not blinded to the study group assignment.

Interventions. Participants randomly assigned to the IER group followed a 5:2 eating pattern: a very-low-energy diet of 500-600 kcal for 2 days of the week along with their usual diet for the other 5 days. The 2 days of calorie restriction could be consecutive or nonconsecutive, with a minimum of 0.8 g supplemental protein per kg of body weight per day, in accordance with the 2016 Dietary Guidelines for Chinese Residents. The CER group was advised to consume 1000 kcal/day for women and 1200 kcal/day for men on a 7-day energy restriction. That is, they were prescribed a daily 25% restriction based on the general principles of a Mediterranean-type diet (30% fat, 45-50% carbohydrate, and 20-25% protein).

Both groups received dietary education from a qualified dietitian and were recommended to maintain their current daily activity levels throughout the trial. Written dietary information brochures with portion advice and sample meal plans were provided to improve compliance in each group. All participants received a digital cooking scale to weigh foods to ensure accuracy of intake and were required to keep a food diary while following the recommended recipe on 2 days/week during calorie restriction to help with adherence. No food was provided. All participants were followed up by regular outpatient visits to both cardiologists and dietitians once a month. Diet checklists, activity schedules, and weight were reviewed to assess compliance with dietary advice at each visit.

 

 

Of note, participants were encouraged to measure and record their BP twice daily, and if 2 consecutive BP readings were < 110/70 mmHg and/or accompanied by hypotensive episodes with symptoms (dizziness, nausea, headache, and fatigue), they were asked to contact the investigators directly. Antihypertensive medication changes were then made in consultation with cardiologists. In addition, a medication management protocol (ie, doses of antidiabetic medications, including insulin and sulfonylurea) was designed to avoid hypoglycemia. Medication could be reduced in the CER group based on the basal dose at the endocrinologist’s discretion. In the IER group, insulin and sulfonylureas were discontinued on calorie restriction days only, and long-acting insulin was discontinued the night before the IER day. Insulin was not to be resumed until a full day’s caloric intake was achieved.

Measures and analysis. The primary outcomes of this study were changes in BP and weight (measured using an automatic digital sphygmomanometer and an electronic scale), and the secondary outcomes were changes in body composition (assessed by dual-energy x-ray absorptiometry scanning), as well as glycosylated hemoglobin A1c (HbA1c) levels and blood lipids after 6 months. All outcome measures were recorded at baseline and at each monthly visit. Incidence rates of hypoglycemia were based on blood glucose (defined as blood glucose < 70 mg/dL) and/or symptomatic hypoglycemia (symptoms of sweating, paleness, dizziness, and confusion). Two cardiologists who were blind to the patients’ diet condition measured and recorded all pertinent clinical parameters and adjudicated serious adverse events.

Data were compared using independent-samples t-tests or the Mann–Whitney U test for continuous variables, and Pearson’s χ2 test or Fisher’s exact test for categorial variables as appropriate. Repeated-measures ANOVA via a linear mixed model was employed to test the effects of diet, time, and their interaction. In subgroup analyses, differential effects of the intervention on the primary outcomes were evaluated with respect to patients’ level of education, domicile, and sex based on the statistical significance of the interaction term for the subgroup of interest in the multivariate model. Analyses were performed based on completers and on an intention-to-treat principle.

Main results. Among the 205 randomized participants, 118 were women and 87 were men; mean (SD) age was 50.5 (8.8) years; mean (SD) BMI was 28.7 (2.6); mean (SD) SBP was 143 (10) mmHg; and mean (SD) DBP was 91 (9) mmHg. At the end of the 6-month intervention, 173 (84.4%) completed the study (IER group: n = 88; CER group: n = 85). Both groups had similar dropout rates at 6 months (IER group: 14 participants [13.7%]; CER group: 18 participants [17.5%]; P = .83) and were well matched for baseline characteristics except for triglyceride levels.

In the completers analysis, both groups experienced significant reductions in weight (mean [SEM]), but there was no difference between treatment groups (−7.2 [0.6] kg in the IER group vs −7.1 [0.6] kg in the CER group; diet by time P = .72). Similarly, the change in SBP and DBP achieved was statistically significant over time, but there was also no difference between the dietary interventions (−8 [0.7] mmHg in the IER group vs −8 [0.6] mmHg in the CER group, diet by time P = .68; −6 [0.6] mmHg in the IER group vs −6 [0.5] mmHg in the CER group, diet by time P = .53]. Subgroup analyses of the association of the intervention with weight, SBP and DBP by sex, education, and domicile showed no significant between-group differences.

 

 

All measures of body composition decreased significantly at 6 months with both groups experiencing comparable reductions in total fat mass (−5.5 [0.6] kg in the IER group vs −4.8 [0.5] kg in the CER group, diet by time P = .08) and android fat mass (−1.1 [0.2] kg in the IER group vs −0.8 [0.2] kg in the CER group, diet by time P = .16). Of note, participants in the CER group lost significantly more total fat-free mass than did participants in the IER group (mean [SEM], −2.3 [0.2] kg vs −1.7 [0.2] kg; P = .03], and there was a trend toward a greater change in total fat mass in the IER group (P = .08). The secondary outcome of mean (SEM) HbA1c (−0.2% [0.1%]) and blood lipid levels (triglyceride level, −1.0 [0.3] mmol/L; total cholesterol level, −0.9 [0.2] mmol/L; low-density lipoprotein cholesterol level, −0.9 [0.2 mmol/L; high-density lipoprotein cholesterol level, 0.7 [0.3] mmol/L] improved with weight loss (P < .05), with no differences between groups (diet by time P > .05).

The intention-to-treat analysis demonstrated that IER and CER are equally effective for weight loss and blood pressure control: both groups experienced significant reductions in weight, SBP, and DBP, but with no difference between treatment groups – mean (SEM) weight change with IER was −7.0 (0.6) kg vs −6.8 (0.6) kg with CER; the mean (SEM) SBP with IER was −7 (0.7) mmHg vs −7 (0.6) mmHg with CER; and the mean (SEM) DBP with IER was −6 (0.5) mmHg vs −5 (0.5) mmHg with CER, (diet by time P = .62, .39, and .41, respectively). There were favorable improvements in body composition, HbA1c, and blood lipid levels, with no differences between groups.

Conclusion. A 2-day severe energy restriction with 5 days of habitual eating compared to 7 days of CER provides an acceptable alternative for BP control and weight loss in overweight and obese individuals with hypertension after 6 months. IER may offer a useful alternative strategy for this population, who find continuous weight-loss diets too difficult to maintain.

Commentary

Globally, obesity represents a major health challenge as it substantially increases the risk of diseases such as hypertension, type 2 diabetes, and coronary heart disease.1 Lifestyle modifications, including weight loss and increased physical activity, are recommended in major guidelines as a first-step intervention in the treatment of hypertensive patients.2 However, lifestyle and behavioral interventions aimed at reducing calorie intake through low-calorie dieting is challenging as it is dependent on individual motivation and adherence to a strict, continuous protocol. Further, CER strategies have limited effectiveness because complex and persistent hormonal, metabolic, and neurochemical adaptations defend against weight loss and promote weight regain.3-4 IER has drawn attention in the popular media as an alternative to CER due to its feasibility and even potential for higher rates of compliance.5

This study adds to the literature as it is the first randomized controlled trial (to the knowledge of the authors at the time of publication) to explore 2 forms of energy restriction – CER and IER – and their impact on weight loss, BP, body composition, HbA1c, and blood lipid levels in overweight and obese patients with high blood pressure. Results from this study showed that IER is as effective as, but not superior to, CER (in terms of the outcomes measures assessed). Specifically, findings highlighted that the 5:2 diet is an effective strategy and noninferior to that of daily calorie restriction for BP and weight control. In addition, both weight loss and BP reduction were greater in a subgroup of obese compared with overweight participants, which indicates that obese populations may benefit more from energy restriction. As the authors highlight, this study both aligns with and expands on current related literature.

 

 

This study has both strengths and limitations, especially with regard to the design and data analysis strategy. A key strength is the randomized controlled trial design which enables increased internal validity and decreases several sources of bias, including selection bias and confounding. In addition, it was also designed as a pragmatic trial, with the protocol reflecting efforts to replicate the real-world environment by not supplying meal replacements or food. Notably, only 9 patients could not comply with the protocol, indicating that acceptability of the diet protocol was high. However, as this was only a 6-month long study, further studies are needed to determine whether a 5:2 diet is sustainable (and effective) in the long-term compared with CER, which the authors highlight. The study was also adequately powered to detect clinically meaningful differences in weight loss and SBP, and appropriate analyses were performed on both the basis of completers and on an intention-to-treat principle. However, further studies are needed that are adequately powered to also detect clinically meaningful differences in the other measures, ie, body composition, HbA1c, and blood lipid levels. Importantly, generalizability of findings from this study is limited as the study population comprises only Chinese adults, predominately middle-aged, overweight, and had mildly to moderately elevated SBP and DBP, and excluded diabetic patients. Thus, findings are not necessarily applicable to individuals with highly elevated blood pressure or poorly controlled diabetes.

Applications for Clinical Practice

Results of this study demonstrated that IER is an effective alternative diet strategy for weight loss and blood pressure control in overweight and obese patients with hypertension and is comparable to CER. This is relevant for clinical practice as IER may be easier to maintain in this population compared to continuous weight-loss diets. Importantly, both types of calorie restriction require clinical oversight as medication changes and periodic monitoring of hypotensive and hypoglycemic episodes are needed. Clinicians should consider what is feasible and sustainable for their patients when recommending intermittent energy restriction.

Financial disclosures: None.

References

1. Blüher M. Obesity: global epidemiology and pathogenesis. Nat Rev Endocrinol. 2019;15(5):288-298. doi:10.1038/s41574-019-0176-8

2. Unger T, Borghi C, Charchar F, et al. 2020 International Society of Hypertension Global hypertension practice guidelines. J Hypertens. 2020;38(6):982-1004. doi:10.1097/HJH.0000000000002453 

3. Müller MJ, Enderle J, Bosy-Westphal A. Changes in Energy Expenditure with Weight Gain and Weight Loss in Humans. Curr Obes Rep. 2016;5(4):413-423. doi:10.1007/s13679-016-0237-4

4. Sainsbury A, Wood RE, Seimon RV, et al. Rationale for novel intermittent dieting strategies to attenuate adaptive responses to energy restriction. Obes Rev. 2018;19 Suppl 1:47–60. doi:10.1111/obr.12787

5. Davis CS, Clarke RE, Coulter SN, et al. Intermittent energy restriction and weight loss: a systematic review. Eur J Clin Nutr. 2016;70(3):292-299. doi:10.1038/ejcn.2015.195

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Study Overview

Objective. To compare the effects of intermittent energy restriction (IER) with those of continuous energy restriction (CER) on blood pressure control and weight loss in overweight and obese patients with hypertension during a 6-month period.

Design. Randomized controlled trial.

Settings and participants. The trial was conducted at the Affiliated Hospital of Jiaxing University from June 1, 2020, to April 30, 2021. Chinese adults were recruited using advertisements and flyers posted in the hospital and local communities. Prior to participation in study activities, all participants gave informed consent prior to recruitment and were provided compensation in the form of a $38 voucher at 3 and 6 months for their time for participating in the study.

The main inclusion criteria were patients between the ages of 18 and 70 years, hypertension, and body mass index (BMI) ranging from 24 to 40 kg/m2. The exclusion criteria were systolic blood pressure (SBP) ≥ 180 mmHg or diastolic blood pressure (DBP) ≥ 120 mmHg, type 1 or 2 diabetes with a history of severe hypoglycemic episodes, pregnancy or breastfeeding, usage of glucagon-like peptide 1 receptor agonists, weight loss > 5 kg within the past 3 months or previous weight loss surgery, and inability to adhere to the dietary protocol.

Of the 294 participants screened for eligibility, 205 were randomized in a 1:1 ratio to the IER group (n = 102) or the CER group (n = 103), stratified by sex and BMI (as overweight or obese). All participants were required to have a stable medication regimen and weight in the 3 months prior to enrollment and not to use weight-loss drugs or vitamin supplements for the duration of the study. Researchers and participants were not blinded to the study group assignment.

Interventions. Participants randomly assigned to the IER group followed a 5:2 eating pattern: a very-low-energy diet of 500-600 kcal for 2 days of the week along with their usual diet for the other 5 days. The 2 days of calorie restriction could be consecutive or nonconsecutive, with a minimum of 0.8 g supplemental protein per kg of body weight per day, in accordance with the 2016 Dietary Guidelines for Chinese Residents. The CER group was advised to consume 1000 kcal/day for women and 1200 kcal/day for men on a 7-day energy restriction. That is, they were prescribed a daily 25% restriction based on the general principles of a Mediterranean-type diet (30% fat, 45-50% carbohydrate, and 20-25% protein).

Both groups received dietary education from a qualified dietitian and were recommended to maintain their current daily activity levels throughout the trial. Written dietary information brochures with portion advice and sample meal plans were provided to improve compliance in each group. All participants received a digital cooking scale to weigh foods to ensure accuracy of intake and were required to keep a food diary while following the recommended recipe on 2 days/week during calorie restriction to help with adherence. No food was provided. All participants were followed up by regular outpatient visits to both cardiologists and dietitians once a month. Diet checklists, activity schedules, and weight were reviewed to assess compliance with dietary advice at each visit.

 

 

Of note, participants were encouraged to measure and record their BP twice daily, and if 2 consecutive BP readings were < 110/70 mmHg and/or accompanied by hypotensive episodes with symptoms (dizziness, nausea, headache, and fatigue), they were asked to contact the investigators directly. Antihypertensive medication changes were then made in consultation with cardiologists. In addition, a medication management protocol (ie, doses of antidiabetic medications, including insulin and sulfonylurea) was designed to avoid hypoglycemia. Medication could be reduced in the CER group based on the basal dose at the endocrinologist’s discretion. In the IER group, insulin and sulfonylureas were discontinued on calorie restriction days only, and long-acting insulin was discontinued the night before the IER day. Insulin was not to be resumed until a full day’s caloric intake was achieved.

Measures and analysis. The primary outcomes of this study were changes in BP and weight (measured using an automatic digital sphygmomanometer and an electronic scale), and the secondary outcomes were changes in body composition (assessed by dual-energy x-ray absorptiometry scanning), as well as glycosylated hemoglobin A1c (HbA1c) levels and blood lipids after 6 months. All outcome measures were recorded at baseline and at each monthly visit. Incidence rates of hypoglycemia were based on blood glucose (defined as blood glucose < 70 mg/dL) and/or symptomatic hypoglycemia (symptoms of sweating, paleness, dizziness, and confusion). Two cardiologists who were blind to the patients’ diet condition measured and recorded all pertinent clinical parameters and adjudicated serious adverse events.

Data were compared using independent-samples t-tests or the Mann–Whitney U test for continuous variables, and Pearson’s χ2 test or Fisher’s exact test for categorial variables as appropriate. Repeated-measures ANOVA via a linear mixed model was employed to test the effects of diet, time, and their interaction. In subgroup analyses, differential effects of the intervention on the primary outcomes were evaluated with respect to patients’ level of education, domicile, and sex based on the statistical significance of the interaction term for the subgroup of interest in the multivariate model. Analyses were performed based on completers and on an intention-to-treat principle.

Main results. Among the 205 randomized participants, 118 were women and 87 were men; mean (SD) age was 50.5 (8.8) years; mean (SD) BMI was 28.7 (2.6); mean (SD) SBP was 143 (10) mmHg; and mean (SD) DBP was 91 (9) mmHg. At the end of the 6-month intervention, 173 (84.4%) completed the study (IER group: n = 88; CER group: n = 85). Both groups had similar dropout rates at 6 months (IER group: 14 participants [13.7%]; CER group: 18 participants [17.5%]; P = .83) and were well matched for baseline characteristics except for triglyceride levels.

In the completers analysis, both groups experienced significant reductions in weight (mean [SEM]), but there was no difference between treatment groups (−7.2 [0.6] kg in the IER group vs −7.1 [0.6] kg in the CER group; diet by time P = .72). Similarly, the change in SBP and DBP achieved was statistically significant over time, but there was also no difference between the dietary interventions (−8 [0.7] mmHg in the IER group vs −8 [0.6] mmHg in the CER group, diet by time P = .68; −6 [0.6] mmHg in the IER group vs −6 [0.5] mmHg in the CER group, diet by time P = .53]. Subgroup analyses of the association of the intervention with weight, SBP and DBP by sex, education, and domicile showed no significant between-group differences.

 

 

All measures of body composition decreased significantly at 6 months with both groups experiencing comparable reductions in total fat mass (−5.5 [0.6] kg in the IER group vs −4.8 [0.5] kg in the CER group, diet by time P = .08) and android fat mass (−1.1 [0.2] kg in the IER group vs −0.8 [0.2] kg in the CER group, diet by time P = .16). Of note, participants in the CER group lost significantly more total fat-free mass than did participants in the IER group (mean [SEM], −2.3 [0.2] kg vs −1.7 [0.2] kg; P = .03], and there was a trend toward a greater change in total fat mass in the IER group (P = .08). The secondary outcome of mean (SEM) HbA1c (−0.2% [0.1%]) and blood lipid levels (triglyceride level, −1.0 [0.3] mmol/L; total cholesterol level, −0.9 [0.2] mmol/L; low-density lipoprotein cholesterol level, −0.9 [0.2 mmol/L; high-density lipoprotein cholesterol level, 0.7 [0.3] mmol/L] improved with weight loss (P < .05), with no differences between groups (diet by time P > .05).

The intention-to-treat analysis demonstrated that IER and CER are equally effective for weight loss and blood pressure control: both groups experienced significant reductions in weight, SBP, and DBP, but with no difference between treatment groups – mean (SEM) weight change with IER was −7.0 (0.6) kg vs −6.8 (0.6) kg with CER; the mean (SEM) SBP with IER was −7 (0.7) mmHg vs −7 (0.6) mmHg with CER; and the mean (SEM) DBP with IER was −6 (0.5) mmHg vs −5 (0.5) mmHg with CER, (diet by time P = .62, .39, and .41, respectively). There were favorable improvements in body composition, HbA1c, and blood lipid levels, with no differences between groups.

Conclusion. A 2-day severe energy restriction with 5 days of habitual eating compared to 7 days of CER provides an acceptable alternative for BP control and weight loss in overweight and obese individuals with hypertension after 6 months. IER may offer a useful alternative strategy for this population, who find continuous weight-loss diets too difficult to maintain.

Commentary

Globally, obesity represents a major health challenge as it substantially increases the risk of diseases such as hypertension, type 2 diabetes, and coronary heart disease.1 Lifestyle modifications, including weight loss and increased physical activity, are recommended in major guidelines as a first-step intervention in the treatment of hypertensive patients.2 However, lifestyle and behavioral interventions aimed at reducing calorie intake through low-calorie dieting is challenging as it is dependent on individual motivation and adherence to a strict, continuous protocol. Further, CER strategies have limited effectiveness because complex and persistent hormonal, metabolic, and neurochemical adaptations defend against weight loss and promote weight regain.3-4 IER has drawn attention in the popular media as an alternative to CER due to its feasibility and even potential for higher rates of compliance.5

This study adds to the literature as it is the first randomized controlled trial (to the knowledge of the authors at the time of publication) to explore 2 forms of energy restriction – CER and IER – and their impact on weight loss, BP, body composition, HbA1c, and blood lipid levels in overweight and obese patients with high blood pressure. Results from this study showed that IER is as effective as, but not superior to, CER (in terms of the outcomes measures assessed). Specifically, findings highlighted that the 5:2 diet is an effective strategy and noninferior to that of daily calorie restriction for BP and weight control. In addition, both weight loss and BP reduction were greater in a subgroup of obese compared with overweight participants, which indicates that obese populations may benefit more from energy restriction. As the authors highlight, this study both aligns with and expands on current related literature.

 

 

This study has both strengths and limitations, especially with regard to the design and data analysis strategy. A key strength is the randomized controlled trial design which enables increased internal validity and decreases several sources of bias, including selection bias and confounding. In addition, it was also designed as a pragmatic trial, with the protocol reflecting efforts to replicate the real-world environment by not supplying meal replacements or food. Notably, only 9 patients could not comply with the protocol, indicating that acceptability of the diet protocol was high. However, as this was only a 6-month long study, further studies are needed to determine whether a 5:2 diet is sustainable (and effective) in the long-term compared with CER, which the authors highlight. The study was also adequately powered to detect clinically meaningful differences in weight loss and SBP, and appropriate analyses were performed on both the basis of completers and on an intention-to-treat principle. However, further studies are needed that are adequately powered to also detect clinically meaningful differences in the other measures, ie, body composition, HbA1c, and blood lipid levels. Importantly, generalizability of findings from this study is limited as the study population comprises only Chinese adults, predominately middle-aged, overweight, and had mildly to moderately elevated SBP and DBP, and excluded diabetic patients. Thus, findings are not necessarily applicable to individuals with highly elevated blood pressure or poorly controlled diabetes.

Applications for Clinical Practice

Results of this study demonstrated that IER is an effective alternative diet strategy for weight loss and blood pressure control in overweight and obese patients with hypertension and is comparable to CER. This is relevant for clinical practice as IER may be easier to maintain in this population compared to continuous weight-loss diets. Importantly, both types of calorie restriction require clinical oversight as medication changes and periodic monitoring of hypotensive and hypoglycemic episodes are needed. Clinicians should consider what is feasible and sustainable for their patients when recommending intermittent energy restriction.

Financial disclosures: None.

Study Overview

Objective. To compare the effects of intermittent energy restriction (IER) with those of continuous energy restriction (CER) on blood pressure control and weight loss in overweight and obese patients with hypertension during a 6-month period.

Design. Randomized controlled trial.

Settings and participants. The trial was conducted at the Affiliated Hospital of Jiaxing University from June 1, 2020, to April 30, 2021. Chinese adults were recruited using advertisements and flyers posted in the hospital and local communities. Prior to participation in study activities, all participants gave informed consent prior to recruitment and were provided compensation in the form of a $38 voucher at 3 and 6 months for their time for participating in the study.

The main inclusion criteria were patients between the ages of 18 and 70 years, hypertension, and body mass index (BMI) ranging from 24 to 40 kg/m2. The exclusion criteria were systolic blood pressure (SBP) ≥ 180 mmHg or diastolic blood pressure (DBP) ≥ 120 mmHg, type 1 or 2 diabetes with a history of severe hypoglycemic episodes, pregnancy or breastfeeding, usage of glucagon-like peptide 1 receptor agonists, weight loss > 5 kg within the past 3 months or previous weight loss surgery, and inability to adhere to the dietary protocol.

Of the 294 participants screened for eligibility, 205 were randomized in a 1:1 ratio to the IER group (n = 102) or the CER group (n = 103), stratified by sex and BMI (as overweight or obese). All participants were required to have a stable medication regimen and weight in the 3 months prior to enrollment and not to use weight-loss drugs or vitamin supplements for the duration of the study. Researchers and participants were not blinded to the study group assignment.

Interventions. Participants randomly assigned to the IER group followed a 5:2 eating pattern: a very-low-energy diet of 500-600 kcal for 2 days of the week along with their usual diet for the other 5 days. The 2 days of calorie restriction could be consecutive or nonconsecutive, with a minimum of 0.8 g supplemental protein per kg of body weight per day, in accordance with the 2016 Dietary Guidelines for Chinese Residents. The CER group was advised to consume 1000 kcal/day for women and 1200 kcal/day for men on a 7-day energy restriction. That is, they were prescribed a daily 25% restriction based on the general principles of a Mediterranean-type diet (30% fat, 45-50% carbohydrate, and 20-25% protein).

Both groups received dietary education from a qualified dietitian and were recommended to maintain their current daily activity levels throughout the trial. Written dietary information brochures with portion advice and sample meal plans were provided to improve compliance in each group. All participants received a digital cooking scale to weigh foods to ensure accuracy of intake and were required to keep a food diary while following the recommended recipe on 2 days/week during calorie restriction to help with adherence. No food was provided. All participants were followed up by regular outpatient visits to both cardiologists and dietitians once a month. Diet checklists, activity schedules, and weight were reviewed to assess compliance with dietary advice at each visit.

 

 

Of note, participants were encouraged to measure and record their BP twice daily, and if 2 consecutive BP readings were < 110/70 mmHg and/or accompanied by hypotensive episodes with symptoms (dizziness, nausea, headache, and fatigue), they were asked to contact the investigators directly. Antihypertensive medication changes were then made in consultation with cardiologists. In addition, a medication management protocol (ie, doses of antidiabetic medications, including insulin and sulfonylurea) was designed to avoid hypoglycemia. Medication could be reduced in the CER group based on the basal dose at the endocrinologist’s discretion. In the IER group, insulin and sulfonylureas were discontinued on calorie restriction days only, and long-acting insulin was discontinued the night before the IER day. Insulin was not to be resumed until a full day’s caloric intake was achieved.

Measures and analysis. The primary outcomes of this study were changes in BP and weight (measured using an automatic digital sphygmomanometer and an electronic scale), and the secondary outcomes were changes in body composition (assessed by dual-energy x-ray absorptiometry scanning), as well as glycosylated hemoglobin A1c (HbA1c) levels and blood lipids after 6 months. All outcome measures were recorded at baseline and at each monthly visit. Incidence rates of hypoglycemia were based on blood glucose (defined as blood glucose < 70 mg/dL) and/or symptomatic hypoglycemia (symptoms of sweating, paleness, dizziness, and confusion). Two cardiologists who were blind to the patients’ diet condition measured and recorded all pertinent clinical parameters and adjudicated serious adverse events.

Data were compared using independent-samples t-tests or the Mann–Whitney U test for continuous variables, and Pearson’s χ2 test or Fisher’s exact test for categorial variables as appropriate. Repeated-measures ANOVA via a linear mixed model was employed to test the effects of diet, time, and their interaction. In subgroup analyses, differential effects of the intervention on the primary outcomes were evaluated with respect to patients’ level of education, domicile, and sex based on the statistical significance of the interaction term for the subgroup of interest in the multivariate model. Analyses were performed based on completers and on an intention-to-treat principle.

Main results. Among the 205 randomized participants, 118 were women and 87 were men; mean (SD) age was 50.5 (8.8) years; mean (SD) BMI was 28.7 (2.6); mean (SD) SBP was 143 (10) mmHg; and mean (SD) DBP was 91 (9) mmHg. At the end of the 6-month intervention, 173 (84.4%) completed the study (IER group: n = 88; CER group: n = 85). Both groups had similar dropout rates at 6 months (IER group: 14 participants [13.7%]; CER group: 18 participants [17.5%]; P = .83) and were well matched for baseline characteristics except for triglyceride levels.

In the completers analysis, both groups experienced significant reductions in weight (mean [SEM]), but there was no difference between treatment groups (−7.2 [0.6] kg in the IER group vs −7.1 [0.6] kg in the CER group; diet by time P = .72). Similarly, the change in SBP and DBP achieved was statistically significant over time, but there was also no difference between the dietary interventions (−8 [0.7] mmHg in the IER group vs −8 [0.6] mmHg in the CER group, diet by time P = .68; −6 [0.6] mmHg in the IER group vs −6 [0.5] mmHg in the CER group, diet by time P = .53]. Subgroup analyses of the association of the intervention with weight, SBP and DBP by sex, education, and domicile showed no significant between-group differences.

 

 

All measures of body composition decreased significantly at 6 months with both groups experiencing comparable reductions in total fat mass (−5.5 [0.6] kg in the IER group vs −4.8 [0.5] kg in the CER group, diet by time P = .08) and android fat mass (−1.1 [0.2] kg in the IER group vs −0.8 [0.2] kg in the CER group, diet by time P = .16). Of note, participants in the CER group lost significantly more total fat-free mass than did participants in the IER group (mean [SEM], −2.3 [0.2] kg vs −1.7 [0.2] kg; P = .03], and there was a trend toward a greater change in total fat mass in the IER group (P = .08). The secondary outcome of mean (SEM) HbA1c (−0.2% [0.1%]) and blood lipid levels (triglyceride level, −1.0 [0.3] mmol/L; total cholesterol level, −0.9 [0.2] mmol/L; low-density lipoprotein cholesterol level, −0.9 [0.2 mmol/L; high-density lipoprotein cholesterol level, 0.7 [0.3] mmol/L] improved with weight loss (P < .05), with no differences between groups (diet by time P > .05).

The intention-to-treat analysis demonstrated that IER and CER are equally effective for weight loss and blood pressure control: both groups experienced significant reductions in weight, SBP, and DBP, but with no difference between treatment groups – mean (SEM) weight change with IER was −7.0 (0.6) kg vs −6.8 (0.6) kg with CER; the mean (SEM) SBP with IER was −7 (0.7) mmHg vs −7 (0.6) mmHg with CER; and the mean (SEM) DBP with IER was −6 (0.5) mmHg vs −5 (0.5) mmHg with CER, (diet by time P = .62, .39, and .41, respectively). There were favorable improvements in body composition, HbA1c, and blood lipid levels, with no differences between groups.

Conclusion. A 2-day severe energy restriction with 5 days of habitual eating compared to 7 days of CER provides an acceptable alternative for BP control and weight loss in overweight and obese individuals with hypertension after 6 months. IER may offer a useful alternative strategy for this population, who find continuous weight-loss diets too difficult to maintain.

Commentary

Globally, obesity represents a major health challenge as it substantially increases the risk of diseases such as hypertension, type 2 diabetes, and coronary heart disease.1 Lifestyle modifications, including weight loss and increased physical activity, are recommended in major guidelines as a first-step intervention in the treatment of hypertensive patients.2 However, lifestyle and behavioral interventions aimed at reducing calorie intake through low-calorie dieting is challenging as it is dependent on individual motivation and adherence to a strict, continuous protocol. Further, CER strategies have limited effectiveness because complex and persistent hormonal, metabolic, and neurochemical adaptations defend against weight loss and promote weight regain.3-4 IER has drawn attention in the popular media as an alternative to CER due to its feasibility and even potential for higher rates of compliance.5

This study adds to the literature as it is the first randomized controlled trial (to the knowledge of the authors at the time of publication) to explore 2 forms of energy restriction – CER and IER – and their impact on weight loss, BP, body composition, HbA1c, and blood lipid levels in overweight and obese patients with high blood pressure. Results from this study showed that IER is as effective as, but not superior to, CER (in terms of the outcomes measures assessed). Specifically, findings highlighted that the 5:2 diet is an effective strategy and noninferior to that of daily calorie restriction for BP and weight control. In addition, both weight loss and BP reduction were greater in a subgroup of obese compared with overweight participants, which indicates that obese populations may benefit more from energy restriction. As the authors highlight, this study both aligns with and expands on current related literature.

 

 

This study has both strengths and limitations, especially with regard to the design and data analysis strategy. A key strength is the randomized controlled trial design which enables increased internal validity and decreases several sources of bias, including selection bias and confounding. In addition, it was also designed as a pragmatic trial, with the protocol reflecting efforts to replicate the real-world environment by not supplying meal replacements or food. Notably, only 9 patients could not comply with the protocol, indicating that acceptability of the diet protocol was high. However, as this was only a 6-month long study, further studies are needed to determine whether a 5:2 diet is sustainable (and effective) in the long-term compared with CER, which the authors highlight. The study was also adequately powered to detect clinically meaningful differences in weight loss and SBP, and appropriate analyses were performed on both the basis of completers and on an intention-to-treat principle. However, further studies are needed that are adequately powered to also detect clinically meaningful differences in the other measures, ie, body composition, HbA1c, and blood lipid levels. Importantly, generalizability of findings from this study is limited as the study population comprises only Chinese adults, predominately middle-aged, overweight, and had mildly to moderately elevated SBP and DBP, and excluded diabetic patients. Thus, findings are not necessarily applicable to individuals with highly elevated blood pressure or poorly controlled diabetes.

Applications for Clinical Practice

Results of this study demonstrated that IER is an effective alternative diet strategy for weight loss and blood pressure control in overweight and obese patients with hypertension and is comparable to CER. This is relevant for clinical practice as IER may be easier to maintain in this population compared to continuous weight-loss diets. Importantly, both types of calorie restriction require clinical oversight as medication changes and periodic monitoring of hypotensive and hypoglycemic episodes are needed. Clinicians should consider what is feasible and sustainable for their patients when recommending intermittent energy restriction.

Financial disclosures: None.

References

1. Blüher M. Obesity: global epidemiology and pathogenesis. Nat Rev Endocrinol. 2019;15(5):288-298. doi:10.1038/s41574-019-0176-8

2. Unger T, Borghi C, Charchar F, et al. 2020 International Society of Hypertension Global hypertension practice guidelines. J Hypertens. 2020;38(6):982-1004. doi:10.1097/HJH.0000000000002453 

3. Müller MJ, Enderle J, Bosy-Westphal A. Changes in Energy Expenditure with Weight Gain and Weight Loss in Humans. Curr Obes Rep. 2016;5(4):413-423. doi:10.1007/s13679-016-0237-4

4. Sainsbury A, Wood RE, Seimon RV, et al. Rationale for novel intermittent dieting strategies to attenuate adaptive responses to energy restriction. Obes Rev. 2018;19 Suppl 1:47–60. doi:10.1111/obr.12787

5. Davis CS, Clarke RE, Coulter SN, et al. Intermittent energy restriction and weight loss: a systematic review. Eur J Clin Nutr. 2016;70(3):292-299. doi:10.1038/ejcn.2015.195

References

1. Blüher M. Obesity: global epidemiology and pathogenesis. Nat Rev Endocrinol. 2019;15(5):288-298. doi:10.1038/s41574-019-0176-8

2. Unger T, Borghi C, Charchar F, et al. 2020 International Society of Hypertension Global hypertension practice guidelines. J Hypertens. 2020;38(6):982-1004. doi:10.1097/HJH.0000000000002453 

3. Müller MJ, Enderle J, Bosy-Westphal A. Changes in Energy Expenditure with Weight Gain and Weight Loss in Humans. Curr Obes Rep. 2016;5(4):413-423. doi:10.1007/s13679-016-0237-4

4. Sainsbury A, Wood RE, Seimon RV, et al. Rationale for novel intermittent dieting strategies to attenuate adaptive responses to energy restriction. Obes Rev. 2018;19 Suppl 1:47–60. doi:10.1111/obr.12787

5. Davis CS, Clarke RE, Coulter SN, et al. Intermittent energy restriction and weight loss: a systematic review. Eur J Clin Nutr. 2016;70(3):292-299. doi:10.1038/ejcn.2015.195

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Preoperative Code Status Discussion in Older Adults: Are We Doing Enough?

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Preoperative Code Status Discussion in Older Adults: Are We Doing Enough?

Study Overview

Objective. The objective of this study was to evaluate orders and documentation describing perioperative management of code status in adults.

Design. A retrospective case series of all adult inpatients admitted to hospitals at 1 academic health system in the US.

Setting and participants. This retrospective case series was conducted at 5 hospitals within the University of Pennsylvania Health System. Cases included all adult inpatients admitted to hospitals between March 2017 and September 2018 who had a Do-Not-Resuscitate (DNR) order placed in their medical record during admission and subsequently underwent a surgical procedure that required anesthesia care.

Main outcome measures. Medical records of included cases were manually reviewed by the authors to verify whether a DNR order was in place at the time surgical intervention was discussed with a patient. Clinical notes and DNR orders of eligible cases were reviewed to identify documentation and outcome of goals of care discussions that were conducted within 48 hours prior to the surgical procedure. Collected data included patient demographics (age, sex, race); case characteristics (American Society of Anesthesiologists [ASA] physical status score, anesthesia type [general vs others such as regional], emergency status [emergent vs elective surgery], procedures by service [surgical including hip fracture repair, gastrostomy or jejunostomy, or exploratory laparotomy vs medical including endoscopy, bronchoscopy, or transesophageal echocardiogram]); and hospital policy for perioperative management of DNR orders (written policy encouraging discussion vs written policy plus additional initiatives, including procedure-specific DNR form). The primary outcome was the presence of a preoperative order or note documenting code status discussion or change. Data were analyzed using χ2 and Fisher exact tests and the threshold for statistical significance was P < .05.

Main results. Of the 27 665 inpatient procedures identified across 5 hospitals, 444 (1.6%) cases met the inclusion criteria. Patients from these cases aged 75 (SD 13) years (95% CI, 72-77 years); 247 (56%, 95% CI, 55%-57%) were women; and 300 (68%, 95% CI, 65%-71%) were White. A total of 426 patients (96%, 95% CI, 90%-100%) had an ASA physical status score of 3 or higher and 237 (53%, 95% CI, 51%-56%) received general anesthesia. The most common procedures performed were endoscopy (148 [33%]), hip fracture repair (43 [10%]), and gastrostomy or jejunostomy (28 [6%]). Reevaluation of code status was documented in 126 cases (28%, 95% CI, 25%-31%); code status orders were changed in 20 of 126 cases (16%, 95% CI, 7%-24%); and a note was filed without a corresponding order for 106 of 126 cases (84%, 95% CI, 75%-95%). In the majority of cases (109 of 126 [87%], 95% CI, 78%-95%) in which documented discussion occurred, DNR orders were suspended. Of 126 cases in which a discussion was documented, participants of these discussions included surgeons 10% of the time (13 cases, 95% CI, 8%-13%), members of the anesthesia team 51% of the time (64 cases, 95% CI, 49%-53%), and medicine or palliative care clinicians 39% of the time (49 cases, 95% CI, 37%-41%).

The rate of documented preoperative code status discussion was higher in patients with higher ASA physical status score (35% in patients with an ASA physical status score ≥ 4 [55 of 155] vs 25% in those with an ASA physical status score ≤ 3 [71 of 289]; P = .02). The rates of documented preoperative code status discussion were similar by anesthesia type (29% for general anesthesia [69 of 237 cases] vs 28% [57 of 207 cases] for other modalities; P = .70). The hospitals involved in this study all had a written policy encouraging rediscussion of code status before surgery. However, only 1 hospital reported added measures (eg, provision of a procedure-specific DNR form) to increase documentation of preoperative code status discussions. In this specific hospital, documentation of preoperative code status discussions was higher compared to other hospitals (67% [37 of 55 cases] vs 23% [89 of 389 cases]; P < .01).

Conclusion. In a retrospective case series conducted at 5 hospitals within 1 academic health system in the US, fewer than 1 in 5 patients with preexisting DNR orders had a documented discussion of code status prior to undergoing surgery. Additional strategies including the development of institutional protocols that facilitate perioperative management of advance directives, identification of local champions, and patient education, should be explored as means to improve preoperative code status reevaulation per guideline recommendations.

 

 

Commentary

It is not unusual that patients with a DNR order may require and undergo surgical interventions to treat reversible conditions, prevent progression of underlying disease, or mitigate distressing symptoms such as pain. For instance, intubation, mechanical ventilation, and administration of vasoactive drugs are resuscitative measures that may be needed to safely anesthetize and sedate a patient. As such, the American College of Surgeons1 has provided a statement on advance directives by patients with an existing DNR order to guide management. Specifically, the statement indicates that the best approach for these patients is a policy of “required reconsideration” of the existing DNR order. Required reconsideration means that “the patient or designated surrogate and the physicians who will be responsible for the patient’s care should, when possible, discuss the new intraoperative and perioperative risks associated with the surgical procedure, the patient’s treatment goals, and an approach for potentially life-threatening problems consistent with the patient’s values and preferences.” Moreover, the required reconsideration discussion needs to occur as early as it is practical once a decision is made to have surgery because the discussion “may result in the patient agreeing to suspend the DNR order during surgery and the perioperative period, retaining the original DNR order, or modifying the DNR order.” Given that surgical patients with DNR orders have significant comorbidities, many sustain postoperative complications, and nearly 1 in 4 die within 30 days of surgery, preoperative advance care planning (ACP) and code status discussions are particularly essential to delivering high quality surgical care.2

In the current study, Hadler et al3 conducted a retrospective analysis to evaluate orders and documentation describing perioperative management of code status in patients with existing DNR order at an academic health system in the US. The authors reported that fewer than 20% of patients with existing DNR orders had a documented discussion of code status prior to undergoing surgery. These findings add to the notion that compliance with such guidance on required reconsideration discussion is suboptimal in perioperative care in the US.4,5 A recently published study focused on patients aged more than 60 years undergoing high-risk oncologic or vascular surgeries similarly showed that the frequency of ACP discussions or advance directive documentations among older patients was low.6 This growing body of evidence is highly clinically relevant in that preoperative discussion on code status is highly relevant to the care of older adults, a population group that accounts for the majority of surgeries and is most vulnerable to poor surgical outcomes. Additionally, it highlights a disconnect between the shared recognition by surgeons and patients that ACP discussion is important in perioperative care and its low implementation rates.

Unsurprisingly, Hadler et al3 reported that added measures such as the provision of a procedure-specific DNR form led to an increase in the documentation of preoperative code status discussions in 1 of the hospitals studied. The authors suggested that strategies such as the development of institutional protocols aimed to facilitate perioperative advance directive discussions, identify local champions, and educate patients may be ways to improve preoperative code status reevaulation. The idea that institutional value and culture are key factors impacting surgeon behavior and may influence the practice of ACP discussion is not new. Thus, creative and adaptable strategies, resources, and trainings that are required by medical institutions and hospitals to support preoperative ACP discussions with patients undergoing surgeries need to be identified, validated, and implemented to optimize perioperative care in vulnerable patients.

Applications for Clinical Practice

The findings from the current study indicate that less than 20% of patients with preexisting DNR orders have a documented discussion of code status prior to undergoing surgery. Physicians and health care institutions need to identify barriers to, and implement strategies that, facilitate and optimize preoperative ACP discussions in order to provide patient-centered care in vulnerable surgical patients.

Financial disclosures: None.

References

1. American College of Surgeons Board of Regents. Statement on Advance Directives by Patients: “Do Not Resuscitate” in the Operating Room. American College of Surgeons. January 3, 2014. Accessed November 6, 2021. https://www.facs.org/about-acs/statements/19-advance-directives

2. Kazaure H, Roman S, Sosa JA. High mortality in surgical patients with do-not-resuscitate orders: analysis of 8256 patients. Arch Surg. 2011;146(8):922-928. doi:10.1001/archsurg.2011.69

3. Hadler RA, Fatuzzo M, Sahota G, Neuman MD. Perioperative Management of Do-Not-Resuscitate Orders at a Large Academic Health System. JAMA Surg. 2021;e214135. doi:10.1001/jamasurg.2021.4135

4. Coopmans VC, Gries CA. CRNA awareness and experience with perioperative DNR orders. AANA J. 2000;68(3):247-256.

5. Urman RD, Lilley EJ, Changala M, Lindvall C, Hepner DL, Bader AM. A Pilot Study to Evaluate Compliance with Guidelines for Preprocedural Reconsideration of Code Status Limitations. J Palliat Med. 2018;21(8):1152-1156. doi:10.1089/jpm.2017.0601

6. Kalbfell E, Kata A, Buffington AS, et al. Frequency of Preoperative Advance Care Planning for Older Adults Undergoing High-risk Surgery: A Secondary Analysis of a Randomized Clinical Trial. JAMA Surg. 2021;156(7):e211521. doi:10.1001/jamasurg.2021.1521

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Study Overview

Objective. The objective of this study was to evaluate orders and documentation describing perioperative management of code status in adults.

Design. A retrospective case series of all adult inpatients admitted to hospitals at 1 academic health system in the US.

Setting and participants. This retrospective case series was conducted at 5 hospitals within the University of Pennsylvania Health System. Cases included all adult inpatients admitted to hospitals between March 2017 and September 2018 who had a Do-Not-Resuscitate (DNR) order placed in their medical record during admission and subsequently underwent a surgical procedure that required anesthesia care.

Main outcome measures. Medical records of included cases were manually reviewed by the authors to verify whether a DNR order was in place at the time surgical intervention was discussed with a patient. Clinical notes and DNR orders of eligible cases were reviewed to identify documentation and outcome of goals of care discussions that were conducted within 48 hours prior to the surgical procedure. Collected data included patient demographics (age, sex, race); case characteristics (American Society of Anesthesiologists [ASA] physical status score, anesthesia type [general vs others such as regional], emergency status [emergent vs elective surgery], procedures by service [surgical including hip fracture repair, gastrostomy or jejunostomy, or exploratory laparotomy vs medical including endoscopy, bronchoscopy, or transesophageal echocardiogram]); and hospital policy for perioperative management of DNR orders (written policy encouraging discussion vs written policy plus additional initiatives, including procedure-specific DNR form). The primary outcome was the presence of a preoperative order or note documenting code status discussion or change. Data were analyzed using χ2 and Fisher exact tests and the threshold for statistical significance was P < .05.

Main results. Of the 27 665 inpatient procedures identified across 5 hospitals, 444 (1.6%) cases met the inclusion criteria. Patients from these cases aged 75 (SD 13) years (95% CI, 72-77 years); 247 (56%, 95% CI, 55%-57%) were women; and 300 (68%, 95% CI, 65%-71%) were White. A total of 426 patients (96%, 95% CI, 90%-100%) had an ASA physical status score of 3 or higher and 237 (53%, 95% CI, 51%-56%) received general anesthesia. The most common procedures performed were endoscopy (148 [33%]), hip fracture repair (43 [10%]), and gastrostomy or jejunostomy (28 [6%]). Reevaluation of code status was documented in 126 cases (28%, 95% CI, 25%-31%); code status orders were changed in 20 of 126 cases (16%, 95% CI, 7%-24%); and a note was filed without a corresponding order for 106 of 126 cases (84%, 95% CI, 75%-95%). In the majority of cases (109 of 126 [87%], 95% CI, 78%-95%) in which documented discussion occurred, DNR orders were suspended. Of 126 cases in which a discussion was documented, participants of these discussions included surgeons 10% of the time (13 cases, 95% CI, 8%-13%), members of the anesthesia team 51% of the time (64 cases, 95% CI, 49%-53%), and medicine or palliative care clinicians 39% of the time (49 cases, 95% CI, 37%-41%).

The rate of documented preoperative code status discussion was higher in patients with higher ASA physical status score (35% in patients with an ASA physical status score ≥ 4 [55 of 155] vs 25% in those with an ASA physical status score ≤ 3 [71 of 289]; P = .02). The rates of documented preoperative code status discussion were similar by anesthesia type (29% for general anesthesia [69 of 237 cases] vs 28% [57 of 207 cases] for other modalities; P = .70). The hospitals involved in this study all had a written policy encouraging rediscussion of code status before surgery. However, only 1 hospital reported added measures (eg, provision of a procedure-specific DNR form) to increase documentation of preoperative code status discussions. In this specific hospital, documentation of preoperative code status discussions was higher compared to other hospitals (67% [37 of 55 cases] vs 23% [89 of 389 cases]; P < .01).

Conclusion. In a retrospective case series conducted at 5 hospitals within 1 academic health system in the US, fewer than 1 in 5 patients with preexisting DNR orders had a documented discussion of code status prior to undergoing surgery. Additional strategies including the development of institutional protocols that facilitate perioperative management of advance directives, identification of local champions, and patient education, should be explored as means to improve preoperative code status reevaulation per guideline recommendations.

 

 

Commentary

It is not unusual that patients with a DNR order may require and undergo surgical interventions to treat reversible conditions, prevent progression of underlying disease, or mitigate distressing symptoms such as pain. For instance, intubation, mechanical ventilation, and administration of vasoactive drugs are resuscitative measures that may be needed to safely anesthetize and sedate a patient. As such, the American College of Surgeons1 has provided a statement on advance directives by patients with an existing DNR order to guide management. Specifically, the statement indicates that the best approach for these patients is a policy of “required reconsideration” of the existing DNR order. Required reconsideration means that “the patient or designated surrogate and the physicians who will be responsible for the patient’s care should, when possible, discuss the new intraoperative and perioperative risks associated with the surgical procedure, the patient’s treatment goals, and an approach for potentially life-threatening problems consistent with the patient’s values and preferences.” Moreover, the required reconsideration discussion needs to occur as early as it is practical once a decision is made to have surgery because the discussion “may result in the patient agreeing to suspend the DNR order during surgery and the perioperative period, retaining the original DNR order, or modifying the DNR order.” Given that surgical patients with DNR orders have significant comorbidities, many sustain postoperative complications, and nearly 1 in 4 die within 30 days of surgery, preoperative advance care planning (ACP) and code status discussions are particularly essential to delivering high quality surgical care.2

In the current study, Hadler et al3 conducted a retrospective analysis to evaluate orders and documentation describing perioperative management of code status in patients with existing DNR order at an academic health system in the US. The authors reported that fewer than 20% of patients with existing DNR orders had a documented discussion of code status prior to undergoing surgery. These findings add to the notion that compliance with such guidance on required reconsideration discussion is suboptimal in perioperative care in the US.4,5 A recently published study focused on patients aged more than 60 years undergoing high-risk oncologic or vascular surgeries similarly showed that the frequency of ACP discussions or advance directive documentations among older patients was low.6 This growing body of evidence is highly clinically relevant in that preoperative discussion on code status is highly relevant to the care of older adults, a population group that accounts for the majority of surgeries and is most vulnerable to poor surgical outcomes. Additionally, it highlights a disconnect between the shared recognition by surgeons and patients that ACP discussion is important in perioperative care and its low implementation rates.

Unsurprisingly, Hadler et al3 reported that added measures such as the provision of a procedure-specific DNR form led to an increase in the documentation of preoperative code status discussions in 1 of the hospitals studied. The authors suggested that strategies such as the development of institutional protocols aimed to facilitate perioperative advance directive discussions, identify local champions, and educate patients may be ways to improve preoperative code status reevaulation. The idea that institutional value and culture are key factors impacting surgeon behavior and may influence the practice of ACP discussion is not new. Thus, creative and adaptable strategies, resources, and trainings that are required by medical institutions and hospitals to support preoperative ACP discussions with patients undergoing surgeries need to be identified, validated, and implemented to optimize perioperative care in vulnerable patients.

Applications for Clinical Practice

The findings from the current study indicate that less than 20% of patients with preexisting DNR orders have a documented discussion of code status prior to undergoing surgery. Physicians and health care institutions need to identify barriers to, and implement strategies that, facilitate and optimize preoperative ACP discussions in order to provide patient-centered care in vulnerable surgical patients.

Financial disclosures: None.

Study Overview

Objective. The objective of this study was to evaluate orders and documentation describing perioperative management of code status in adults.

Design. A retrospective case series of all adult inpatients admitted to hospitals at 1 academic health system in the US.

Setting and participants. This retrospective case series was conducted at 5 hospitals within the University of Pennsylvania Health System. Cases included all adult inpatients admitted to hospitals between March 2017 and September 2018 who had a Do-Not-Resuscitate (DNR) order placed in their medical record during admission and subsequently underwent a surgical procedure that required anesthesia care.

Main outcome measures. Medical records of included cases were manually reviewed by the authors to verify whether a DNR order was in place at the time surgical intervention was discussed with a patient. Clinical notes and DNR orders of eligible cases were reviewed to identify documentation and outcome of goals of care discussions that were conducted within 48 hours prior to the surgical procedure. Collected data included patient demographics (age, sex, race); case characteristics (American Society of Anesthesiologists [ASA] physical status score, anesthesia type [general vs others such as regional], emergency status [emergent vs elective surgery], procedures by service [surgical including hip fracture repair, gastrostomy or jejunostomy, or exploratory laparotomy vs medical including endoscopy, bronchoscopy, or transesophageal echocardiogram]); and hospital policy for perioperative management of DNR orders (written policy encouraging discussion vs written policy plus additional initiatives, including procedure-specific DNR form). The primary outcome was the presence of a preoperative order or note documenting code status discussion or change. Data were analyzed using χ2 and Fisher exact tests and the threshold for statistical significance was P < .05.

Main results. Of the 27 665 inpatient procedures identified across 5 hospitals, 444 (1.6%) cases met the inclusion criteria. Patients from these cases aged 75 (SD 13) years (95% CI, 72-77 years); 247 (56%, 95% CI, 55%-57%) were women; and 300 (68%, 95% CI, 65%-71%) were White. A total of 426 patients (96%, 95% CI, 90%-100%) had an ASA physical status score of 3 or higher and 237 (53%, 95% CI, 51%-56%) received general anesthesia. The most common procedures performed were endoscopy (148 [33%]), hip fracture repair (43 [10%]), and gastrostomy or jejunostomy (28 [6%]). Reevaluation of code status was documented in 126 cases (28%, 95% CI, 25%-31%); code status orders were changed in 20 of 126 cases (16%, 95% CI, 7%-24%); and a note was filed without a corresponding order for 106 of 126 cases (84%, 95% CI, 75%-95%). In the majority of cases (109 of 126 [87%], 95% CI, 78%-95%) in which documented discussion occurred, DNR orders were suspended. Of 126 cases in which a discussion was documented, participants of these discussions included surgeons 10% of the time (13 cases, 95% CI, 8%-13%), members of the anesthesia team 51% of the time (64 cases, 95% CI, 49%-53%), and medicine or palliative care clinicians 39% of the time (49 cases, 95% CI, 37%-41%).

The rate of documented preoperative code status discussion was higher in patients with higher ASA physical status score (35% in patients with an ASA physical status score ≥ 4 [55 of 155] vs 25% in those with an ASA physical status score ≤ 3 [71 of 289]; P = .02). The rates of documented preoperative code status discussion were similar by anesthesia type (29% for general anesthesia [69 of 237 cases] vs 28% [57 of 207 cases] for other modalities; P = .70). The hospitals involved in this study all had a written policy encouraging rediscussion of code status before surgery. However, only 1 hospital reported added measures (eg, provision of a procedure-specific DNR form) to increase documentation of preoperative code status discussions. In this specific hospital, documentation of preoperative code status discussions was higher compared to other hospitals (67% [37 of 55 cases] vs 23% [89 of 389 cases]; P < .01).

Conclusion. In a retrospective case series conducted at 5 hospitals within 1 academic health system in the US, fewer than 1 in 5 patients with preexisting DNR orders had a documented discussion of code status prior to undergoing surgery. Additional strategies including the development of institutional protocols that facilitate perioperative management of advance directives, identification of local champions, and patient education, should be explored as means to improve preoperative code status reevaulation per guideline recommendations.

 

 

Commentary

It is not unusual that patients with a DNR order may require and undergo surgical interventions to treat reversible conditions, prevent progression of underlying disease, or mitigate distressing symptoms such as pain. For instance, intubation, mechanical ventilation, and administration of vasoactive drugs are resuscitative measures that may be needed to safely anesthetize and sedate a patient. As such, the American College of Surgeons1 has provided a statement on advance directives by patients with an existing DNR order to guide management. Specifically, the statement indicates that the best approach for these patients is a policy of “required reconsideration” of the existing DNR order. Required reconsideration means that “the patient or designated surrogate and the physicians who will be responsible for the patient’s care should, when possible, discuss the new intraoperative and perioperative risks associated with the surgical procedure, the patient’s treatment goals, and an approach for potentially life-threatening problems consistent with the patient’s values and preferences.” Moreover, the required reconsideration discussion needs to occur as early as it is practical once a decision is made to have surgery because the discussion “may result in the patient agreeing to suspend the DNR order during surgery and the perioperative period, retaining the original DNR order, or modifying the DNR order.” Given that surgical patients with DNR orders have significant comorbidities, many sustain postoperative complications, and nearly 1 in 4 die within 30 days of surgery, preoperative advance care planning (ACP) and code status discussions are particularly essential to delivering high quality surgical care.2

In the current study, Hadler et al3 conducted a retrospective analysis to evaluate orders and documentation describing perioperative management of code status in patients with existing DNR order at an academic health system in the US. The authors reported that fewer than 20% of patients with existing DNR orders had a documented discussion of code status prior to undergoing surgery. These findings add to the notion that compliance with such guidance on required reconsideration discussion is suboptimal in perioperative care in the US.4,5 A recently published study focused on patients aged more than 60 years undergoing high-risk oncologic or vascular surgeries similarly showed that the frequency of ACP discussions or advance directive documentations among older patients was low.6 This growing body of evidence is highly clinically relevant in that preoperative discussion on code status is highly relevant to the care of older adults, a population group that accounts for the majority of surgeries and is most vulnerable to poor surgical outcomes. Additionally, it highlights a disconnect between the shared recognition by surgeons and patients that ACP discussion is important in perioperative care and its low implementation rates.

Unsurprisingly, Hadler et al3 reported that added measures such as the provision of a procedure-specific DNR form led to an increase in the documentation of preoperative code status discussions in 1 of the hospitals studied. The authors suggested that strategies such as the development of institutional protocols aimed to facilitate perioperative advance directive discussions, identify local champions, and educate patients may be ways to improve preoperative code status reevaulation. The idea that institutional value and culture are key factors impacting surgeon behavior and may influence the practice of ACP discussion is not new. Thus, creative and adaptable strategies, resources, and trainings that are required by medical institutions and hospitals to support preoperative ACP discussions with patients undergoing surgeries need to be identified, validated, and implemented to optimize perioperative care in vulnerable patients.

Applications for Clinical Practice

The findings from the current study indicate that less than 20% of patients with preexisting DNR orders have a documented discussion of code status prior to undergoing surgery. Physicians and health care institutions need to identify barriers to, and implement strategies that, facilitate and optimize preoperative ACP discussions in order to provide patient-centered care in vulnerable surgical patients.

Financial disclosures: None.

References

1. American College of Surgeons Board of Regents. Statement on Advance Directives by Patients: “Do Not Resuscitate” in the Operating Room. American College of Surgeons. January 3, 2014. Accessed November 6, 2021. https://www.facs.org/about-acs/statements/19-advance-directives

2. Kazaure H, Roman S, Sosa JA. High mortality in surgical patients with do-not-resuscitate orders: analysis of 8256 patients. Arch Surg. 2011;146(8):922-928. doi:10.1001/archsurg.2011.69

3. Hadler RA, Fatuzzo M, Sahota G, Neuman MD. Perioperative Management of Do-Not-Resuscitate Orders at a Large Academic Health System. JAMA Surg. 2021;e214135. doi:10.1001/jamasurg.2021.4135

4. Coopmans VC, Gries CA. CRNA awareness and experience with perioperative DNR orders. AANA J. 2000;68(3):247-256.

5. Urman RD, Lilley EJ, Changala M, Lindvall C, Hepner DL, Bader AM. A Pilot Study to Evaluate Compliance with Guidelines for Preprocedural Reconsideration of Code Status Limitations. J Palliat Med. 2018;21(8):1152-1156. doi:10.1089/jpm.2017.0601

6. Kalbfell E, Kata A, Buffington AS, et al. Frequency of Preoperative Advance Care Planning for Older Adults Undergoing High-risk Surgery: A Secondary Analysis of a Randomized Clinical Trial. JAMA Surg. 2021;156(7):e211521. doi:10.1001/jamasurg.2021.1521

References

1. American College of Surgeons Board of Regents. Statement on Advance Directives by Patients: “Do Not Resuscitate” in the Operating Room. American College of Surgeons. January 3, 2014. Accessed November 6, 2021. https://www.facs.org/about-acs/statements/19-advance-directives

2. Kazaure H, Roman S, Sosa JA. High mortality in surgical patients with do-not-resuscitate orders: analysis of 8256 patients. Arch Surg. 2011;146(8):922-928. doi:10.1001/archsurg.2011.69

3. Hadler RA, Fatuzzo M, Sahota G, Neuman MD. Perioperative Management of Do-Not-Resuscitate Orders at a Large Academic Health System. JAMA Surg. 2021;e214135. doi:10.1001/jamasurg.2021.4135

4. Coopmans VC, Gries CA. CRNA awareness and experience with perioperative DNR orders. AANA J. 2000;68(3):247-256.

5. Urman RD, Lilley EJ, Changala M, Lindvall C, Hepner DL, Bader AM. A Pilot Study to Evaluate Compliance with Guidelines for Preprocedural Reconsideration of Code Status Limitations. J Palliat Med. 2018;21(8):1152-1156. doi:10.1089/jpm.2017.0601

6. Kalbfell E, Kata A, Buffington AS, et al. Frequency of Preoperative Advance Care Planning for Older Adults Undergoing High-risk Surgery: A Secondary Analysis of a Randomized Clinical Trial. JAMA Surg. 2021;156(7):e211521. doi:10.1001/jamasurg.2021.1521

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FFR-Guided or Angiography-Guided Nonculprit Lesion PCI in Patients With STEMI Without Cardiogenic Shock

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FFR-Guided or Angiography-Guided Nonculprit Lesion PCI in Patients With STEMI Without Cardiogenic Shock

Study Overview

Objective. To determine whether fractional flow reserve (FFR)-guided percutaneous coronary intervention (PCI) of nonculprit lesion in patients with ST-segment elevation myocardial infarction (STEMI) is superior to angiography-guided PCI.

Design. Multicenter randomized control trial blinded to outcome, conducted in 41 sites in France.

Setting and participants. A total of 1163 patients with STEMI and multivessel coronary disease, who had undergone successful PCI to the culprit lesion were randomized to either FFR-guided PCI or angiography-guided PCI for nonculprit lesions. Randomization was stratified according to the trial site and timing of the procedure (immediate or staged).

Main outcome measures. The primary outcome was a composite of death from any cause, nonfatal myocardial infarction (MI) or unplanned hospitalization leading to urgent revascularization at 1 year.

Main results. At 1 year, the primary outcome occurred in 32 of 586 patients (5.5%) in the FFR-guided group and in 24 of 577 (4.2%) in the angiography-guided group (hazard ratio [HR], 1.32; 95% CI, 0.78-2.23; P = .31). The rate of death (1.5% vs 1.7%), nonfatal MI (3.1% vs 1.7%), and unplanned hospitalization leading to urgent revascularization (3.1% vs 1.7%) were also similar between FFR-guided and angiography-guided groups.

Conclusion. Among patients with STEMI and multivessel disease who had undergone successful PCI of the culprit vessel, an FFR-guided strategy for complete revascularization was not superior to angiography-guided strategy for reducing death, MI, or urgent revascularization at 1 year.

Commentary

Patients presenting with STEMI often have multivessel disease.1 Recently, multiple studies have reported the benefit of nonculprit vessel revascularization in patients presenting with hemodynamically stable STEMI compared to culprit-only strategy including the most recent COMPLETE trial which showed reduction in death and MI.2-6 However, the previous studies have variable design in evaluating the nonculprit vessel, some utilized FFR guidance, while others used angiography guidance. Whether FFR-guided PCI of nonculprit vessel can improve outcome in patients presenting STEMI remains unknown.

 

 

In the FLOWER-MI study, Puymirat et al investigated the use of FFR compared to angiography-guided nonculprit vessel PCI. A total of 1163 patients presenting with STEMI and multivessel disease who had undergone successful PCI to the culprit vessel, were randomized to either FFR guidance or angiography guidance among 41 centers in France. The authors found that after 1 year, there was no difference in composite endpoint of death, nonfatal MI or unplanned hospitalization leading to urgent revascularization in the FFR-guided group compared to angiography-guided group (5.5% vs 4.2%, HR, 1.32; 95% CI, 0.678-2.23; P = .31). There was also no difference in individual components of primary outcomes or secondary outcomes such as rate of stent thrombosis, any revascularization, or hospitalization.

There are a few interesting points to consider in this study. Ever since the Fractional Flow Reserve vs Angiography for Multivessel Evaluation (FAME) trial reported the lower incidence of major adverse events in routine FFR measurement during PCI compared to angiography-guided PCI, physiological assessment has become the gold standard for treatment of stable ischemic heart disease.7 However, the results of the current FLOWER-MI trial were not consistent with the FAME trial and there are few possible reasons to consider.

First, the use of FFR in the setting of STEMI is less validated compared to stable ischemic heart disease.8 Microvascular dysfunction during the acute phase can affect the FFR reading and the lesion severity can be underestimated.8 Second, the rate of composite endpoint was much lower in this study compared to FAME despite using the same composite endpoint of death, nonfatal MI, and unplanned hospitalization leading to urgent revascularization. At 1 year, the incidence of primary outcome was 13.5% in the FFR-guided group compared to 18.6% in the angiography-guided group in the FAME study compared to 5.5% and 4.2% in the FLOWER-MI study, despite having a sicker population presenting with STEMI. This is likely due to improvement in the PCI techniques such as radial approach, imaging guidance, and advancement in medical therapy such as use of more potent antiplatelet therapy. With lower incidence of primary outcome, larger number of patients are needed to detect the difference in the composite outcome. Finally, the operators’ visual assessment may have been calibrated to the physiologic assessment as the operators are routinely using FFR assessment which may have diminished the benefit of FFR guidance seen in the early FAME study.

Another interesting finding from this study was that although the study protocol encouraged the operators to perform the nonculprit PCI in the same setting, only 4% had nonculprit PCI in the same setting and 96% of the patients underwent a staged PCI. The advantage of performing the nonculprit PCI on the same setting is to have 1 fewer procedure for the patient. On the other hand, the disadvantage of this approach includes prolongation of the index procedure, theoretically higher risk of complication during the acute phase and vasospasm leading to overestimation of the lesion severity. A recent analysis from the COMPLETE study did not show any difference when comparing staged PCI during the index hospitalization vs after discharge.9 The optimal timing of the staged PCI needs to be investigated in future studies.

A limitation of this study is the lower than expected incidence of clinical events decreasing the statistical power of the study. However, there was no signal that FFR-guided PCI is better compared to the angiography-guided group. In fact, the curve started to diverge at 6 months favoring the angiography-guided group. In addition, there was no core-lab analysis for completeness of revascularization.

Applications for Clinical Practice

In patients presenting with hemodynamically stable STEMI for undergoing nonculprit vessel PCI, both FFR-guided or angiography-guided strategies can be considered.

Financial disclosures: None.

References

1. Park DW, Clare RM, Schulte PJ, et al. Extent, location, and clinical significance of non-infarct-related coronary artery disease among patients with ST-elevation myocardial infarction. JAMA. 2014;312(19):2019-27. doi:10.1001/jama.2014.15095

2. Wald DS, Morris JK, Wald NJ, et al. Randomized trial of preventive angioplasty in myocardial infarction. N Engl J Med. 2013;369(12):1115-23. doi:10.1056/NEJMoa1305520

3. Gershlick AH, Khan JN, Kelly DJ, et al. Randomized trial of complete versus lesion-only revascularization in patients undergoing primary percutaneous coronary intervention for STEMI and multivessel disease: the CvLPRIT trial. J Am Coll Cardiol. 2015;65(10):963-72. doi:10.1016/j.jacc.2014.12.038

4. Engstrøm T, Kelbæk H, Helqvist S, et al. Complete revascularisation versus treatment of the culprit lesion only in patients with ST-segment elevation myocardial infarction and multivessel disease (DANAMI-3-PRIMULTI): an open-label, randomised controlled trial. Lancet. 2015;386(9994):665-71. doi:10.1016/s0140-6736(15)60648-1

5. Smits PC, Abdel-Wahab M, Neumann FJ, , et al. Fractional Flow Reserve-Guided Multivessel Angioplasty in Myocardial Infarction. N Engl J Med. 2017;376(13):1234-44. doi:10.1056/NEJMoa1701067

6. Mehta SR, Wood DA, Storey RF, et al. Complete Revascularization with Multivessel PCI for Myocardial Infarction. N Engl J Med. 2019;381(15):1411-21. doi:10.1056/NEJMoa1907775

7. Tonino PA, De Bruyne B, Pijls NH, et al. Fractional flow reserve versus angiography for guiding percutaneous coronary intervention. N Engl J Med. 2009;360(3):213-24. doi:10.1056/NEJMoa0807611

8. Thim T, van der Hoeven NW, Musto C, et al. Evaluation and Management of Nonculprit Lesions in STEMI. JACC Cardiovasc Interv. 2020;13(10):1145-54. doi:10.1016/j.jcin.2020.02.030

9. Wood DA, Cairns JA, Wang J, et al. Timing of Staged Nonculprit Artery Revascularization in Patients With ST-Segment Elevation Myocardial Infarction: COMPLETE Trial. J Am Coll Cardiol. 2019;74(22):2713-23. doi:10.1016/j.jacc.2019/09.051

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Study Overview

Objective. To determine whether fractional flow reserve (FFR)-guided percutaneous coronary intervention (PCI) of nonculprit lesion in patients with ST-segment elevation myocardial infarction (STEMI) is superior to angiography-guided PCI.

Design. Multicenter randomized control trial blinded to outcome, conducted in 41 sites in France.

Setting and participants. A total of 1163 patients with STEMI and multivessel coronary disease, who had undergone successful PCI to the culprit lesion were randomized to either FFR-guided PCI or angiography-guided PCI for nonculprit lesions. Randomization was stratified according to the trial site and timing of the procedure (immediate or staged).

Main outcome measures. The primary outcome was a composite of death from any cause, nonfatal myocardial infarction (MI) or unplanned hospitalization leading to urgent revascularization at 1 year.

Main results. At 1 year, the primary outcome occurred in 32 of 586 patients (5.5%) in the FFR-guided group and in 24 of 577 (4.2%) in the angiography-guided group (hazard ratio [HR], 1.32; 95% CI, 0.78-2.23; P = .31). The rate of death (1.5% vs 1.7%), nonfatal MI (3.1% vs 1.7%), and unplanned hospitalization leading to urgent revascularization (3.1% vs 1.7%) were also similar between FFR-guided and angiography-guided groups.

Conclusion. Among patients with STEMI and multivessel disease who had undergone successful PCI of the culprit vessel, an FFR-guided strategy for complete revascularization was not superior to angiography-guided strategy for reducing death, MI, or urgent revascularization at 1 year.

Commentary

Patients presenting with STEMI often have multivessel disease.1 Recently, multiple studies have reported the benefit of nonculprit vessel revascularization in patients presenting with hemodynamically stable STEMI compared to culprit-only strategy including the most recent COMPLETE trial which showed reduction in death and MI.2-6 However, the previous studies have variable design in evaluating the nonculprit vessel, some utilized FFR guidance, while others used angiography guidance. Whether FFR-guided PCI of nonculprit vessel can improve outcome in patients presenting STEMI remains unknown.

 

 

In the FLOWER-MI study, Puymirat et al investigated the use of FFR compared to angiography-guided nonculprit vessel PCI. A total of 1163 patients presenting with STEMI and multivessel disease who had undergone successful PCI to the culprit vessel, were randomized to either FFR guidance or angiography guidance among 41 centers in France. The authors found that after 1 year, there was no difference in composite endpoint of death, nonfatal MI or unplanned hospitalization leading to urgent revascularization in the FFR-guided group compared to angiography-guided group (5.5% vs 4.2%, HR, 1.32; 95% CI, 0.678-2.23; P = .31). There was also no difference in individual components of primary outcomes or secondary outcomes such as rate of stent thrombosis, any revascularization, or hospitalization.

There are a few interesting points to consider in this study. Ever since the Fractional Flow Reserve vs Angiography for Multivessel Evaluation (FAME) trial reported the lower incidence of major adverse events in routine FFR measurement during PCI compared to angiography-guided PCI, physiological assessment has become the gold standard for treatment of stable ischemic heart disease.7 However, the results of the current FLOWER-MI trial were not consistent with the FAME trial and there are few possible reasons to consider.

First, the use of FFR in the setting of STEMI is less validated compared to stable ischemic heart disease.8 Microvascular dysfunction during the acute phase can affect the FFR reading and the lesion severity can be underestimated.8 Second, the rate of composite endpoint was much lower in this study compared to FAME despite using the same composite endpoint of death, nonfatal MI, and unplanned hospitalization leading to urgent revascularization. At 1 year, the incidence of primary outcome was 13.5% in the FFR-guided group compared to 18.6% in the angiography-guided group in the FAME study compared to 5.5% and 4.2% in the FLOWER-MI study, despite having a sicker population presenting with STEMI. This is likely due to improvement in the PCI techniques such as radial approach, imaging guidance, and advancement in medical therapy such as use of more potent antiplatelet therapy. With lower incidence of primary outcome, larger number of patients are needed to detect the difference in the composite outcome. Finally, the operators’ visual assessment may have been calibrated to the physiologic assessment as the operators are routinely using FFR assessment which may have diminished the benefit of FFR guidance seen in the early FAME study.

Another interesting finding from this study was that although the study protocol encouraged the operators to perform the nonculprit PCI in the same setting, only 4% had nonculprit PCI in the same setting and 96% of the patients underwent a staged PCI. The advantage of performing the nonculprit PCI on the same setting is to have 1 fewer procedure for the patient. On the other hand, the disadvantage of this approach includes prolongation of the index procedure, theoretically higher risk of complication during the acute phase and vasospasm leading to overestimation of the lesion severity. A recent analysis from the COMPLETE study did not show any difference when comparing staged PCI during the index hospitalization vs after discharge.9 The optimal timing of the staged PCI needs to be investigated in future studies.

A limitation of this study is the lower than expected incidence of clinical events decreasing the statistical power of the study. However, there was no signal that FFR-guided PCI is better compared to the angiography-guided group. In fact, the curve started to diverge at 6 months favoring the angiography-guided group. In addition, there was no core-lab analysis for completeness of revascularization.

Applications for Clinical Practice

In patients presenting with hemodynamically stable STEMI for undergoing nonculprit vessel PCI, both FFR-guided or angiography-guided strategies can be considered.

Financial disclosures: None.

Study Overview

Objective. To determine whether fractional flow reserve (FFR)-guided percutaneous coronary intervention (PCI) of nonculprit lesion in patients with ST-segment elevation myocardial infarction (STEMI) is superior to angiography-guided PCI.

Design. Multicenter randomized control trial blinded to outcome, conducted in 41 sites in France.

Setting and participants. A total of 1163 patients with STEMI and multivessel coronary disease, who had undergone successful PCI to the culprit lesion were randomized to either FFR-guided PCI or angiography-guided PCI for nonculprit lesions. Randomization was stratified according to the trial site and timing of the procedure (immediate or staged).

Main outcome measures. The primary outcome was a composite of death from any cause, nonfatal myocardial infarction (MI) or unplanned hospitalization leading to urgent revascularization at 1 year.

Main results. At 1 year, the primary outcome occurred in 32 of 586 patients (5.5%) in the FFR-guided group and in 24 of 577 (4.2%) in the angiography-guided group (hazard ratio [HR], 1.32; 95% CI, 0.78-2.23; P = .31). The rate of death (1.5% vs 1.7%), nonfatal MI (3.1% vs 1.7%), and unplanned hospitalization leading to urgent revascularization (3.1% vs 1.7%) were also similar between FFR-guided and angiography-guided groups.

Conclusion. Among patients with STEMI and multivessel disease who had undergone successful PCI of the culprit vessel, an FFR-guided strategy for complete revascularization was not superior to angiography-guided strategy for reducing death, MI, or urgent revascularization at 1 year.

Commentary

Patients presenting with STEMI often have multivessel disease.1 Recently, multiple studies have reported the benefit of nonculprit vessel revascularization in patients presenting with hemodynamically stable STEMI compared to culprit-only strategy including the most recent COMPLETE trial which showed reduction in death and MI.2-6 However, the previous studies have variable design in evaluating the nonculprit vessel, some utilized FFR guidance, while others used angiography guidance. Whether FFR-guided PCI of nonculprit vessel can improve outcome in patients presenting STEMI remains unknown.

 

 

In the FLOWER-MI study, Puymirat et al investigated the use of FFR compared to angiography-guided nonculprit vessel PCI. A total of 1163 patients presenting with STEMI and multivessel disease who had undergone successful PCI to the culprit vessel, were randomized to either FFR guidance or angiography guidance among 41 centers in France. The authors found that after 1 year, there was no difference in composite endpoint of death, nonfatal MI or unplanned hospitalization leading to urgent revascularization in the FFR-guided group compared to angiography-guided group (5.5% vs 4.2%, HR, 1.32; 95% CI, 0.678-2.23; P = .31). There was also no difference in individual components of primary outcomes or secondary outcomes such as rate of stent thrombosis, any revascularization, or hospitalization.

There are a few interesting points to consider in this study. Ever since the Fractional Flow Reserve vs Angiography for Multivessel Evaluation (FAME) trial reported the lower incidence of major adverse events in routine FFR measurement during PCI compared to angiography-guided PCI, physiological assessment has become the gold standard for treatment of stable ischemic heart disease.7 However, the results of the current FLOWER-MI trial were not consistent with the FAME trial and there are few possible reasons to consider.

First, the use of FFR in the setting of STEMI is less validated compared to stable ischemic heart disease.8 Microvascular dysfunction during the acute phase can affect the FFR reading and the lesion severity can be underestimated.8 Second, the rate of composite endpoint was much lower in this study compared to FAME despite using the same composite endpoint of death, nonfatal MI, and unplanned hospitalization leading to urgent revascularization. At 1 year, the incidence of primary outcome was 13.5% in the FFR-guided group compared to 18.6% in the angiography-guided group in the FAME study compared to 5.5% and 4.2% in the FLOWER-MI study, despite having a sicker population presenting with STEMI. This is likely due to improvement in the PCI techniques such as radial approach, imaging guidance, and advancement in medical therapy such as use of more potent antiplatelet therapy. With lower incidence of primary outcome, larger number of patients are needed to detect the difference in the composite outcome. Finally, the operators’ visual assessment may have been calibrated to the physiologic assessment as the operators are routinely using FFR assessment which may have diminished the benefit of FFR guidance seen in the early FAME study.

Another interesting finding from this study was that although the study protocol encouraged the operators to perform the nonculprit PCI in the same setting, only 4% had nonculprit PCI in the same setting and 96% of the patients underwent a staged PCI. The advantage of performing the nonculprit PCI on the same setting is to have 1 fewer procedure for the patient. On the other hand, the disadvantage of this approach includes prolongation of the index procedure, theoretically higher risk of complication during the acute phase and vasospasm leading to overestimation of the lesion severity. A recent analysis from the COMPLETE study did not show any difference when comparing staged PCI during the index hospitalization vs after discharge.9 The optimal timing of the staged PCI needs to be investigated in future studies.

A limitation of this study is the lower than expected incidence of clinical events decreasing the statistical power of the study. However, there was no signal that FFR-guided PCI is better compared to the angiography-guided group. In fact, the curve started to diverge at 6 months favoring the angiography-guided group. In addition, there was no core-lab analysis for completeness of revascularization.

Applications for Clinical Practice

In patients presenting with hemodynamically stable STEMI for undergoing nonculprit vessel PCI, both FFR-guided or angiography-guided strategies can be considered.

Financial disclosures: None.

References

1. Park DW, Clare RM, Schulte PJ, et al. Extent, location, and clinical significance of non-infarct-related coronary artery disease among patients with ST-elevation myocardial infarction. JAMA. 2014;312(19):2019-27. doi:10.1001/jama.2014.15095

2. Wald DS, Morris JK, Wald NJ, et al. Randomized trial of preventive angioplasty in myocardial infarction. N Engl J Med. 2013;369(12):1115-23. doi:10.1056/NEJMoa1305520

3. Gershlick AH, Khan JN, Kelly DJ, et al. Randomized trial of complete versus lesion-only revascularization in patients undergoing primary percutaneous coronary intervention for STEMI and multivessel disease: the CvLPRIT trial. J Am Coll Cardiol. 2015;65(10):963-72. doi:10.1016/j.jacc.2014.12.038

4. Engstrøm T, Kelbæk H, Helqvist S, et al. Complete revascularisation versus treatment of the culprit lesion only in patients with ST-segment elevation myocardial infarction and multivessel disease (DANAMI-3-PRIMULTI): an open-label, randomised controlled trial. Lancet. 2015;386(9994):665-71. doi:10.1016/s0140-6736(15)60648-1

5. Smits PC, Abdel-Wahab M, Neumann FJ, , et al. Fractional Flow Reserve-Guided Multivessel Angioplasty in Myocardial Infarction. N Engl J Med. 2017;376(13):1234-44. doi:10.1056/NEJMoa1701067

6. Mehta SR, Wood DA, Storey RF, et al. Complete Revascularization with Multivessel PCI for Myocardial Infarction. N Engl J Med. 2019;381(15):1411-21. doi:10.1056/NEJMoa1907775

7. Tonino PA, De Bruyne B, Pijls NH, et al. Fractional flow reserve versus angiography for guiding percutaneous coronary intervention. N Engl J Med. 2009;360(3):213-24. doi:10.1056/NEJMoa0807611

8. Thim T, van der Hoeven NW, Musto C, et al. Evaluation and Management of Nonculprit Lesions in STEMI. JACC Cardiovasc Interv. 2020;13(10):1145-54. doi:10.1016/j.jcin.2020.02.030

9. Wood DA, Cairns JA, Wang J, et al. Timing of Staged Nonculprit Artery Revascularization in Patients With ST-Segment Elevation Myocardial Infarction: COMPLETE Trial. J Am Coll Cardiol. 2019;74(22):2713-23. doi:10.1016/j.jacc.2019/09.051

References

1. Park DW, Clare RM, Schulte PJ, et al. Extent, location, and clinical significance of non-infarct-related coronary artery disease among patients with ST-elevation myocardial infarction. JAMA. 2014;312(19):2019-27. doi:10.1001/jama.2014.15095

2. Wald DS, Morris JK, Wald NJ, et al. Randomized trial of preventive angioplasty in myocardial infarction. N Engl J Med. 2013;369(12):1115-23. doi:10.1056/NEJMoa1305520

3. Gershlick AH, Khan JN, Kelly DJ, et al. Randomized trial of complete versus lesion-only revascularization in patients undergoing primary percutaneous coronary intervention for STEMI and multivessel disease: the CvLPRIT trial. J Am Coll Cardiol. 2015;65(10):963-72. doi:10.1016/j.jacc.2014.12.038

4. Engstrøm T, Kelbæk H, Helqvist S, et al. Complete revascularisation versus treatment of the culprit lesion only in patients with ST-segment elevation myocardial infarction and multivessel disease (DANAMI-3-PRIMULTI): an open-label, randomised controlled trial. Lancet. 2015;386(9994):665-71. doi:10.1016/s0140-6736(15)60648-1

5. Smits PC, Abdel-Wahab M, Neumann FJ, , et al. Fractional Flow Reserve-Guided Multivessel Angioplasty in Myocardial Infarction. N Engl J Med. 2017;376(13):1234-44. doi:10.1056/NEJMoa1701067

6. Mehta SR, Wood DA, Storey RF, et al. Complete Revascularization with Multivessel PCI for Myocardial Infarction. N Engl J Med. 2019;381(15):1411-21. doi:10.1056/NEJMoa1907775

7. Tonino PA, De Bruyne B, Pijls NH, et al. Fractional flow reserve versus angiography for guiding percutaneous coronary intervention. N Engl J Med. 2009;360(3):213-24. doi:10.1056/NEJMoa0807611

8. Thim T, van der Hoeven NW, Musto C, et al. Evaluation and Management of Nonculprit Lesions in STEMI. JACC Cardiovasc Interv. 2020;13(10):1145-54. doi:10.1016/j.jcin.2020.02.030

9. Wood DA, Cairns JA, Wang J, et al. Timing of Staged Nonculprit Artery Revascularization in Patients With ST-Segment Elevation Myocardial Infarction: COMPLETE Trial. J Am Coll Cardiol. 2019;74(22):2713-23. doi:10.1016/j.jacc.2019/09.051

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Free Clinic Diagnosis Data Improvement Project Using International Classification of Diseases and Electronic Health Record

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Free Clinic Diagnosis Data Improvement Project Using International Classification of Diseases and Electronic Health Record

From Pacific Lutheran School of Nursing, Tacoma, WA.

Objective: This quality improvement project aimed to enhance The Olympia Free Clinic’s (TOFC) data availability using International Classification of Diseases (ICD) code entry into the electronic health record (EHR). Prior to this project, TOFC lacked quality diagnosis data. This project strived to answer questions like “How many TOFC patients have diabetes?”

Methods: A new system was implemented for inputting ICD codes into Practice Fusion, the clinic’s EHR. During the initial phase, TOFC’s 21 volunteer providers entered the codes associated with the appropriate diagnosis for each of 157 encounters using a simplified map of options, including a map of the 20 most common diagnoses and a more comprehensive 60-code map.

Results: An EHR report found that 128 new diagnoses were entered during project implementation, hypertension being the most common diagnosis, followed by depression, then posttraumatic stress disorder.

Conclusion: The knowledge of patient diagnoses enabled the clinic to make more-informed decisions.

Keywords: free clinic, data, quality improvement, electronic health record, International Classification of Diseases

Data creates a starting point, a goal, background, understanding of needs and context, and allows for tracking and improvement over time. This quality improvement (QI) project for The Olympia Free Clinic (TOFC) implemented a new system for tracking patient diagnoses. The 21 primary TOFC providers were encouraged to input mapped International Statistical Classification of Diseases and Related Health Problems (ICD) codes into the electronic health record (EHR). The clinic’s providers consisted of mostly retired, but some actively practicing, medical doctors, doctors of osteopathy, nurse practitioners, physician assistants, and psychiatrists.

Previous to this project, the clinic lacked any concrete data on patient demographics or diagnoses. For example, the clinic was unable to accurately answer the National Association of Free and Charitable Clinics’ questions about how many patients TOFC providers saw with diabetes, hypertension, asthma, and hyperlipidemia.1 Additionally, the needs of the clinic and its population were based on educated guesses.

 

 

As a free clinic staffed by volunteers and open 2 days a week, TOFC focused solely on giving care to those who needed it, operating pragmatically and addressing any issues as they arose. However, this strategy left the clinic unable to answer questions like “How many TOFC patients have diabetes?” By answering these questions, the clinic can better assess their resource and staffing needs.

Purpose

The project enlisted 21 volunteer providers to record diagnoses through ICD codes on the approximately 2000 active patients between March 22, 2021, and June 15, 2021. Tracking patient diagnoses improves clinic data, outcomes, and decision-making. By working on data improvement, the clinic can better understand its patient population and their needs, enhance clinical care, create better outcomes, make informed decisions, and raise eligibility for grants. The clinic was at a turning point as they reevaluated their mission statement and decided whether they would continue to focus on acute ailments or expand to formally manage chronic diseases as well. This decision needed to be made with knowledge, understanding, and context, which diagnosis data can provide. For example, the knowledge that the clinic’s 3 most common diagnoses are chronic conditions demonstrated that an official shift in their mission may have been warranted.

Literature Review

QI projects are effective and common in the free clinic setting.2-4 To the author’s knowledge, no literature to date shows the implementation of a system to better track diagnoses using a free clinic’s EHR with ICD codes.

Data bring value to clinics in many ways. It can also lead to more informed and better distribution of resources, such as preventative health and social services, patient education, and medical inventory.4

The focus of the US health care system is shifting to a value-based system under the Patient Protection and Affordable Care Act.5 Outcome measurements and improvement play a key role in this.6 Without knowing diagnoses, we cannot effectively track outcomes and have no data on which to base improvements. Insurance and reimbursement requirements typically hold health care facilities accountable for making these outcomes and improvements a reality.5,6 Free clinics, however, lack these motivations, which explains why a free clinic may be deficient in data and tracking methods. Tracking diagnosis codes will, going forward, allow TOFC to see outcomes and trends over time, track the effectiveness of the treatments, and change course if need be.6

 

 

TOFC fully implemented the EHR in 2018, giving the clinic better capabilities for pulling reports and tracking data. Although there were growing pains, many TOFC providers were already familiar with ICD codes, which, along with an EHR, provide a system to easily retrieve, store, and analyze diagnoses for evidence-based and informed decision-making.7 This made using ICD codes and the EHR an obvious choice to track patient diagnoses. However, most of the providers were not putting them in ICD codes before this project was implemented. Instead, diagnoses were typed in the notes and, therefore, not easy to generate in a report without having to open each chart for each individual encounter and combing through the notes. To make matters worse, providers were never trained on how to enter the codes in the EHR, and most providers saw no reason to, because the clinic does not bill for services.

Methods

A needs assessment determined that TOFC lacked data. This QI project used a combination of primary and secondary continuous quality improvement data.8 The primary data came from pulling the reports on Practice Fusion to see how many times each diagnosis code was put in during the implementation phase of this project. Secondary data came from interviewing the providers and asking whether they put in the diagnosis codes.

ICD diagnosis entry

Practice Fusion is the EHR TOFC uses and was therefore the platform for this QI project. Two ICD maps were created, which incorporated both International Classification of Diseases, Ninth Revision (ICD-9) and International Classification of Diseases, Tenth Revision (ICD-10) codes. There are tens of thousands of ICD codes in existence, but because TOFC is a free clinic that does not bill or receive reimbursement, the codes did not need to be as specific as they do in a paid clinic. Therefore, the maps put all the variations of each disease into a single category. For example, every patient with diabetes would receive the same ICD code regardless of whether their diabetes was controlled, uncontrolled, or any other variation. The goal of simplifying the codes was to improve compliance with ICD code entry and make reports easier to generate. The maps allowed the options to be simplified and, therefore, more user friendly for both the providers and the data collectors pulling reports. As some ICD-9 codes were already being used, these codes were incorporated so providers could keep using what they were already familiar with. To create the map, generic ICD codes were selected to represent each disease.

An initial survey was conducted prior to implementation with 10 providers, 2 nurses, and 2 staff members, asking which diagnoses they thought were seen most often in the clinic. Based off those answers, a map was created with the 20 most commonly used ICD codes, which can be seen in the Table. A more comprehensive map was also created, with 61 encompassing diagnoses.

table for article


To start the implementation process, providers were emailed an explanation of the project, the ICD code maps, and step-by-step instructions on how to enter a diagnosis into the EHR. Additionally, the 20 most common diagnoses forms were posted on the walls at the provider stations along with pictures illustrating how to input the codes in the EHR. The more comprehensive map was attached to the nurse clipboards that accompanied each encounter. The first night the providers volunteered after receiving the email, the researcher would review with them how to input the diagnosis code and have them test the method on a practice patient, either in person or over the phone.

 

 

A starting report was pulled March 22, 2021, covering encounters between September 6, 2017, and March 22, 2021, for the 20 most common diagnoses. Another report was pulled at the completion of the implementation phase, on June 15, 2021, covering March 22, 2021, to June 15, 2021. Willing providers and staff members were surveyed after implementation completion. The providers were asked whether they use the ICD codes, whether they would do so in the future, and whether they found it helpful when other providers had entered diagnoses. If they answered no to any of the questions, there were asked why, and whether they had any suggestions for improvements. The 4 staff members were asked whether they thought the data were helpful for their role and, if so, how they would use it.

Surveys

Surveys were conducted after the project was completed with willing and available providers and staff members in order to assess the utility of the project as well as to ensure future improvements and sustainability of the system.

Provider surveys

Do you currently input mapped ICD-10 codes when you chart for each encounter?

Yes No

If yes, do you intend to continue inputting the ICD codes in your encounters in the future?

Yes No

If no to either question above, please explain:

Do you have any recommendations for making it easier to input ICD codes or another way to track patients’ diagnoses?

Staff surveys

Is this data helpful for your role?

Yes No

If yes, how will you use this data?

Results

During the implementation phase, hypertension was the most common diagnosis seen at TOFC, accounting for 35 of 131 (27%) top 20 diagnoses entered. Depression was second, accounting for about 20% of diagnoses. Posttraumatic stress disorder was the third most common, making up 18% of diagnoses. There were 157 encounters during the implementation phase and 128 ICD diagnoses entered into the chart during this time period, suggesting that most encounters had a corresponding diagnosis code entered. See the Table for more details.

 

 

Survey results

Provider surveys

Six providers answered the survey questions. Four answered “yes” to both questions and 2 answered “no” to both questions. Reasons cited for why they did not input the ICD codes included not remembering to enter the codes or not remembering how to enter the codes. Recommendations for making it easier included incorporating the diagnosis in the assessment section of the EHR instead of standing alone as its own section, replacing ICD-9 codes with ICD-10 codes on the maps, making more specific codes for options, like typing more mental health diagnoses, and implementing more training on how to enter the codes.

Staff surveys

Three of 4 staff members responded to the survey. All 3 indicated that the data collected from this project assisted in their role. Stated uses for this data included grant applications and funding; community education, such as presentations and outreach; program development and monitoring; quality improvement; supply purchasing (eg, medications in stock to treat most commonly seen conditions), scheduling clinics and providers; allocating resources and supplies; and accepting or rejecting medical supply donations.

Discussion

Before this project, 668 of the top 20 most common diagnosis codes were entered from when TOFC introduced use of the EHR in the clinic in 2017, until the beginning of the implementation phase of this project in March 2021. During the 3 months of the implementation phase, 131 diagnoses were entered, representing almost 20% of the amount that were entered in 3 and a half years. Pulling the reports for these 20 diagnoses took less than 1 hour. During the needs assessment phase of this project, diagnoses for 3 months were extracted from the EHR by combing through provider notes and extracting the data from the notes—a process that took 11 hours.

Knowledge of diagnoses and the reasons for clinic attendance help the clinic make decisions about staffing, resources, and services. The TOFC board of directors used this data to assist with the decision of whether or not to change the clinic’s mission to include primary care as an official clinic function. The original purpose of the clinic was to address acute issues for people who lacked the resources for medical care. For example, a homeless person with an abscess could come to the clinic and have the abscess drained and treated. The results of this project illustrate that, in reality, most of the diagnoses actually seen in the clinic are more chronic in nature and require consistent, ongoing care. For instance, the project identified 52 clinic patients receiving consistent diabetic care. This type of data can help the clinic determine whether it should accept diabetes-associated donations and whether it needs to recruit a volunteer diabetes educator. Generally, this data can help guide other decisions as well, like what medications should be kept in the pharmacy, whether there are certain specialists the clinic should seek to partner with, and whether the clinic should embark on any particular education campaigns. By inputting ICD codes, diagnosis data are easily obtained to assist with future decisions.

A limitation of this project was that the reports could only be pulled within a certain time frame if the start date of the diagnosis was specified. As most providers did not indicate a start date with their entered diagnosis code, the only way to compare the before and after was to count the total before and the total after the implementation time frame. In other words, comparison reports could not be pulled retroactively, so some data on the less common diagnosis codes are missing from this paper, as reports for the comprehensive map were not pulled ahead of time. Providers may have omitted the start date when entering the diagnosis codes because many of these patients had their diagnoses for years—seeing different providers each time—so starting the diagnosis at that particular encounter did not make sense. Additionally, during training, although how to enter the start date was demonstrated, the emphasis and priority was placed on actually entering the ICD code, in an effort to keep the process simple and increase participation.

Conclusion

Evidence-based care and informed decision-making require data. In a free clinic, this can be difficult to obtain due to limited staffing and the absence of billing and insurance requirements. ICD codes and EHRs are powerful tools to collect data and information about clinic needs. This project improved TOFC’s knowledge about what kind of patients and diagnoses they see.

Corresponding author: Sarah M. Shanahan, MSN, RN, Pacific Lutheran University School of Nursing, Ramstad, Room 214, Tacoma, WA 98447; [email protected].

Financial disclosures: None.

References

1. National Association of Free and Charitable Clinics. 2021 NAFC Member Data & Standards Report. https://www.nafcclinics.org/sites/default/files/NAFC%202021%20Data%20Report%20Final.pdf

2. Lee JS, Combs K, Pasarica M; KNIGHTS Research Group. Improving efficiency while improving patient care in a student-run free clinic. J Am Board Fam Med. 2017;30(4):513-519. doi:10.3122/jabfm.2017.04.170044

3. Lu KB, Thiel B, Atkins CA, et al. Satisfaction with healthcare received at an interprofessional student-run free clinic: invested in training the next generation of healthcare professionals. Cureus. 2018;10(3):e2282. doi:10.7759/cureus.2282

4. Tran T, Briones C, Gillet AS, et al. “Knowing” your population: who are we caring for at Tulane University School of Medicine’s student-run free clinics? J Public Health (Oxf). 2020:1-7. doi:10.1007/s10389-020-01389-7

5. Sennett C. Healthcare reform: quality outcomes measurement and reporting. Am Health Drug Benefits. 2010;3(5):350-352.

6. Mazzali C, Duca P. Use of administrative data in healthcare research. Intern Emerg Med. 2015;10(4):517-524. doi:10.1007/s11739-015-1213-9

7. Moons E, Khanna A, Akkasi A, Moens MF. A comparison of deep learning methods for ICD coding of clinical records. Appl Sci. 2020;10(15):5262. doi:10.3390/app10155262

8. Finkelman A. Quality Improvement: A Guide for Integration in Nursing. Jones & Bartlett Learning; 2018.

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From Pacific Lutheran School of Nursing, Tacoma, WA.

Objective: This quality improvement project aimed to enhance The Olympia Free Clinic’s (TOFC) data availability using International Classification of Diseases (ICD) code entry into the electronic health record (EHR). Prior to this project, TOFC lacked quality diagnosis data. This project strived to answer questions like “How many TOFC patients have diabetes?”

Methods: A new system was implemented for inputting ICD codes into Practice Fusion, the clinic’s EHR. During the initial phase, TOFC’s 21 volunteer providers entered the codes associated with the appropriate diagnosis for each of 157 encounters using a simplified map of options, including a map of the 20 most common diagnoses and a more comprehensive 60-code map.

Results: An EHR report found that 128 new diagnoses were entered during project implementation, hypertension being the most common diagnosis, followed by depression, then posttraumatic stress disorder.

Conclusion: The knowledge of patient diagnoses enabled the clinic to make more-informed decisions.

Keywords: free clinic, data, quality improvement, electronic health record, International Classification of Diseases

Data creates a starting point, a goal, background, understanding of needs and context, and allows for tracking and improvement over time. This quality improvement (QI) project for The Olympia Free Clinic (TOFC) implemented a new system for tracking patient diagnoses. The 21 primary TOFC providers were encouraged to input mapped International Statistical Classification of Diseases and Related Health Problems (ICD) codes into the electronic health record (EHR). The clinic’s providers consisted of mostly retired, but some actively practicing, medical doctors, doctors of osteopathy, nurse practitioners, physician assistants, and psychiatrists.

Previous to this project, the clinic lacked any concrete data on patient demographics or diagnoses. For example, the clinic was unable to accurately answer the National Association of Free and Charitable Clinics’ questions about how many patients TOFC providers saw with diabetes, hypertension, asthma, and hyperlipidemia.1 Additionally, the needs of the clinic and its population were based on educated guesses.

 

 

As a free clinic staffed by volunteers and open 2 days a week, TOFC focused solely on giving care to those who needed it, operating pragmatically and addressing any issues as they arose. However, this strategy left the clinic unable to answer questions like “How many TOFC patients have diabetes?” By answering these questions, the clinic can better assess their resource and staffing needs.

Purpose

The project enlisted 21 volunteer providers to record diagnoses through ICD codes on the approximately 2000 active patients between March 22, 2021, and June 15, 2021. Tracking patient diagnoses improves clinic data, outcomes, and decision-making. By working on data improvement, the clinic can better understand its patient population and their needs, enhance clinical care, create better outcomes, make informed decisions, and raise eligibility for grants. The clinic was at a turning point as they reevaluated their mission statement and decided whether they would continue to focus on acute ailments or expand to formally manage chronic diseases as well. This decision needed to be made with knowledge, understanding, and context, which diagnosis data can provide. For example, the knowledge that the clinic’s 3 most common diagnoses are chronic conditions demonstrated that an official shift in their mission may have been warranted.

Literature Review

QI projects are effective and common in the free clinic setting.2-4 To the author’s knowledge, no literature to date shows the implementation of a system to better track diagnoses using a free clinic’s EHR with ICD codes.

Data bring value to clinics in many ways. It can also lead to more informed and better distribution of resources, such as preventative health and social services, patient education, and medical inventory.4

The focus of the US health care system is shifting to a value-based system under the Patient Protection and Affordable Care Act.5 Outcome measurements and improvement play a key role in this.6 Without knowing diagnoses, we cannot effectively track outcomes and have no data on which to base improvements. Insurance and reimbursement requirements typically hold health care facilities accountable for making these outcomes and improvements a reality.5,6 Free clinics, however, lack these motivations, which explains why a free clinic may be deficient in data and tracking methods. Tracking diagnosis codes will, going forward, allow TOFC to see outcomes and trends over time, track the effectiveness of the treatments, and change course if need be.6

 

 

TOFC fully implemented the EHR in 2018, giving the clinic better capabilities for pulling reports and tracking data. Although there were growing pains, many TOFC providers were already familiar with ICD codes, which, along with an EHR, provide a system to easily retrieve, store, and analyze diagnoses for evidence-based and informed decision-making.7 This made using ICD codes and the EHR an obvious choice to track patient diagnoses. However, most of the providers were not putting them in ICD codes before this project was implemented. Instead, diagnoses were typed in the notes and, therefore, not easy to generate in a report without having to open each chart for each individual encounter and combing through the notes. To make matters worse, providers were never trained on how to enter the codes in the EHR, and most providers saw no reason to, because the clinic does not bill for services.

Methods

A needs assessment determined that TOFC lacked data. This QI project used a combination of primary and secondary continuous quality improvement data.8 The primary data came from pulling the reports on Practice Fusion to see how many times each diagnosis code was put in during the implementation phase of this project. Secondary data came from interviewing the providers and asking whether they put in the diagnosis codes.

ICD diagnosis entry

Practice Fusion is the EHR TOFC uses and was therefore the platform for this QI project. Two ICD maps were created, which incorporated both International Classification of Diseases, Ninth Revision (ICD-9) and International Classification of Diseases, Tenth Revision (ICD-10) codes. There are tens of thousands of ICD codes in existence, but because TOFC is a free clinic that does not bill or receive reimbursement, the codes did not need to be as specific as they do in a paid clinic. Therefore, the maps put all the variations of each disease into a single category. For example, every patient with diabetes would receive the same ICD code regardless of whether their diabetes was controlled, uncontrolled, or any other variation. The goal of simplifying the codes was to improve compliance with ICD code entry and make reports easier to generate. The maps allowed the options to be simplified and, therefore, more user friendly for both the providers and the data collectors pulling reports. As some ICD-9 codes were already being used, these codes were incorporated so providers could keep using what they were already familiar with. To create the map, generic ICD codes were selected to represent each disease.

An initial survey was conducted prior to implementation with 10 providers, 2 nurses, and 2 staff members, asking which diagnoses they thought were seen most often in the clinic. Based off those answers, a map was created with the 20 most commonly used ICD codes, which can be seen in the Table. A more comprehensive map was also created, with 61 encompassing diagnoses.

table for article


To start the implementation process, providers were emailed an explanation of the project, the ICD code maps, and step-by-step instructions on how to enter a diagnosis into the EHR. Additionally, the 20 most common diagnoses forms were posted on the walls at the provider stations along with pictures illustrating how to input the codes in the EHR. The more comprehensive map was attached to the nurse clipboards that accompanied each encounter. The first night the providers volunteered after receiving the email, the researcher would review with them how to input the diagnosis code and have them test the method on a practice patient, either in person or over the phone.

 

 

A starting report was pulled March 22, 2021, covering encounters between September 6, 2017, and March 22, 2021, for the 20 most common diagnoses. Another report was pulled at the completion of the implementation phase, on June 15, 2021, covering March 22, 2021, to June 15, 2021. Willing providers and staff members were surveyed after implementation completion. The providers were asked whether they use the ICD codes, whether they would do so in the future, and whether they found it helpful when other providers had entered diagnoses. If they answered no to any of the questions, there were asked why, and whether they had any suggestions for improvements. The 4 staff members were asked whether they thought the data were helpful for their role and, if so, how they would use it.

Surveys

Surveys were conducted after the project was completed with willing and available providers and staff members in order to assess the utility of the project as well as to ensure future improvements and sustainability of the system.

Provider surveys

Do you currently input mapped ICD-10 codes when you chart for each encounter?

Yes No

If yes, do you intend to continue inputting the ICD codes in your encounters in the future?

Yes No

If no to either question above, please explain:

Do you have any recommendations for making it easier to input ICD codes or another way to track patients’ diagnoses?

Staff surveys

Is this data helpful for your role?

Yes No

If yes, how will you use this data?

Results

During the implementation phase, hypertension was the most common diagnosis seen at TOFC, accounting for 35 of 131 (27%) top 20 diagnoses entered. Depression was second, accounting for about 20% of diagnoses. Posttraumatic stress disorder was the third most common, making up 18% of diagnoses. There were 157 encounters during the implementation phase and 128 ICD diagnoses entered into the chart during this time period, suggesting that most encounters had a corresponding diagnosis code entered. See the Table for more details.

 

 

Survey results

Provider surveys

Six providers answered the survey questions. Four answered “yes” to both questions and 2 answered “no” to both questions. Reasons cited for why they did not input the ICD codes included not remembering to enter the codes or not remembering how to enter the codes. Recommendations for making it easier included incorporating the diagnosis in the assessment section of the EHR instead of standing alone as its own section, replacing ICD-9 codes with ICD-10 codes on the maps, making more specific codes for options, like typing more mental health diagnoses, and implementing more training on how to enter the codes.

Staff surveys

Three of 4 staff members responded to the survey. All 3 indicated that the data collected from this project assisted in their role. Stated uses for this data included grant applications and funding; community education, such as presentations and outreach; program development and monitoring; quality improvement; supply purchasing (eg, medications in stock to treat most commonly seen conditions), scheduling clinics and providers; allocating resources and supplies; and accepting or rejecting medical supply donations.

Discussion

Before this project, 668 of the top 20 most common diagnosis codes were entered from when TOFC introduced use of the EHR in the clinic in 2017, until the beginning of the implementation phase of this project in March 2021. During the 3 months of the implementation phase, 131 diagnoses were entered, representing almost 20% of the amount that were entered in 3 and a half years. Pulling the reports for these 20 diagnoses took less than 1 hour. During the needs assessment phase of this project, diagnoses for 3 months were extracted from the EHR by combing through provider notes and extracting the data from the notes—a process that took 11 hours.

Knowledge of diagnoses and the reasons for clinic attendance help the clinic make decisions about staffing, resources, and services. The TOFC board of directors used this data to assist with the decision of whether or not to change the clinic’s mission to include primary care as an official clinic function. The original purpose of the clinic was to address acute issues for people who lacked the resources for medical care. For example, a homeless person with an abscess could come to the clinic and have the abscess drained and treated. The results of this project illustrate that, in reality, most of the diagnoses actually seen in the clinic are more chronic in nature and require consistent, ongoing care. For instance, the project identified 52 clinic patients receiving consistent diabetic care. This type of data can help the clinic determine whether it should accept diabetes-associated donations and whether it needs to recruit a volunteer diabetes educator. Generally, this data can help guide other decisions as well, like what medications should be kept in the pharmacy, whether there are certain specialists the clinic should seek to partner with, and whether the clinic should embark on any particular education campaigns. By inputting ICD codes, diagnosis data are easily obtained to assist with future decisions.

A limitation of this project was that the reports could only be pulled within a certain time frame if the start date of the diagnosis was specified. As most providers did not indicate a start date with their entered diagnosis code, the only way to compare the before and after was to count the total before and the total after the implementation time frame. In other words, comparison reports could not be pulled retroactively, so some data on the less common diagnosis codes are missing from this paper, as reports for the comprehensive map were not pulled ahead of time. Providers may have omitted the start date when entering the diagnosis codes because many of these patients had their diagnoses for years—seeing different providers each time—so starting the diagnosis at that particular encounter did not make sense. Additionally, during training, although how to enter the start date was demonstrated, the emphasis and priority was placed on actually entering the ICD code, in an effort to keep the process simple and increase participation.

Conclusion

Evidence-based care and informed decision-making require data. In a free clinic, this can be difficult to obtain due to limited staffing and the absence of billing and insurance requirements. ICD codes and EHRs are powerful tools to collect data and information about clinic needs. This project improved TOFC’s knowledge about what kind of patients and diagnoses they see.

Corresponding author: Sarah M. Shanahan, MSN, RN, Pacific Lutheran University School of Nursing, Ramstad, Room 214, Tacoma, WA 98447; [email protected].

Financial disclosures: None.

From Pacific Lutheran School of Nursing, Tacoma, WA.

Objective: This quality improvement project aimed to enhance The Olympia Free Clinic’s (TOFC) data availability using International Classification of Diseases (ICD) code entry into the electronic health record (EHR). Prior to this project, TOFC lacked quality diagnosis data. This project strived to answer questions like “How many TOFC patients have diabetes?”

Methods: A new system was implemented for inputting ICD codes into Practice Fusion, the clinic’s EHR. During the initial phase, TOFC’s 21 volunteer providers entered the codes associated with the appropriate diagnosis for each of 157 encounters using a simplified map of options, including a map of the 20 most common diagnoses and a more comprehensive 60-code map.

Results: An EHR report found that 128 new diagnoses were entered during project implementation, hypertension being the most common diagnosis, followed by depression, then posttraumatic stress disorder.

Conclusion: The knowledge of patient diagnoses enabled the clinic to make more-informed decisions.

Keywords: free clinic, data, quality improvement, electronic health record, International Classification of Diseases

Data creates a starting point, a goal, background, understanding of needs and context, and allows for tracking and improvement over time. This quality improvement (QI) project for The Olympia Free Clinic (TOFC) implemented a new system for tracking patient diagnoses. The 21 primary TOFC providers were encouraged to input mapped International Statistical Classification of Diseases and Related Health Problems (ICD) codes into the electronic health record (EHR). The clinic’s providers consisted of mostly retired, but some actively practicing, medical doctors, doctors of osteopathy, nurse practitioners, physician assistants, and psychiatrists.

Previous to this project, the clinic lacked any concrete data on patient demographics or diagnoses. For example, the clinic was unable to accurately answer the National Association of Free and Charitable Clinics’ questions about how many patients TOFC providers saw with diabetes, hypertension, asthma, and hyperlipidemia.1 Additionally, the needs of the clinic and its population were based on educated guesses.

 

 

As a free clinic staffed by volunteers and open 2 days a week, TOFC focused solely on giving care to those who needed it, operating pragmatically and addressing any issues as they arose. However, this strategy left the clinic unable to answer questions like “How many TOFC patients have diabetes?” By answering these questions, the clinic can better assess their resource and staffing needs.

Purpose

The project enlisted 21 volunteer providers to record diagnoses through ICD codes on the approximately 2000 active patients between March 22, 2021, and June 15, 2021. Tracking patient diagnoses improves clinic data, outcomes, and decision-making. By working on data improvement, the clinic can better understand its patient population and their needs, enhance clinical care, create better outcomes, make informed decisions, and raise eligibility for grants. The clinic was at a turning point as they reevaluated their mission statement and decided whether they would continue to focus on acute ailments or expand to formally manage chronic diseases as well. This decision needed to be made with knowledge, understanding, and context, which diagnosis data can provide. For example, the knowledge that the clinic’s 3 most common diagnoses are chronic conditions demonstrated that an official shift in their mission may have been warranted.

Literature Review

QI projects are effective and common in the free clinic setting.2-4 To the author’s knowledge, no literature to date shows the implementation of a system to better track diagnoses using a free clinic’s EHR with ICD codes.

Data bring value to clinics in many ways. It can also lead to more informed and better distribution of resources, such as preventative health and social services, patient education, and medical inventory.4

The focus of the US health care system is shifting to a value-based system under the Patient Protection and Affordable Care Act.5 Outcome measurements and improvement play a key role in this.6 Without knowing diagnoses, we cannot effectively track outcomes and have no data on which to base improvements. Insurance and reimbursement requirements typically hold health care facilities accountable for making these outcomes and improvements a reality.5,6 Free clinics, however, lack these motivations, which explains why a free clinic may be deficient in data and tracking methods. Tracking diagnosis codes will, going forward, allow TOFC to see outcomes and trends over time, track the effectiveness of the treatments, and change course if need be.6

 

 

TOFC fully implemented the EHR in 2018, giving the clinic better capabilities for pulling reports and tracking data. Although there were growing pains, many TOFC providers were already familiar with ICD codes, which, along with an EHR, provide a system to easily retrieve, store, and analyze diagnoses for evidence-based and informed decision-making.7 This made using ICD codes and the EHR an obvious choice to track patient diagnoses. However, most of the providers were not putting them in ICD codes before this project was implemented. Instead, diagnoses were typed in the notes and, therefore, not easy to generate in a report without having to open each chart for each individual encounter and combing through the notes. To make matters worse, providers were never trained on how to enter the codes in the EHR, and most providers saw no reason to, because the clinic does not bill for services.

Methods

A needs assessment determined that TOFC lacked data. This QI project used a combination of primary and secondary continuous quality improvement data.8 The primary data came from pulling the reports on Practice Fusion to see how many times each diagnosis code was put in during the implementation phase of this project. Secondary data came from interviewing the providers and asking whether they put in the diagnosis codes.

ICD diagnosis entry

Practice Fusion is the EHR TOFC uses and was therefore the platform for this QI project. Two ICD maps were created, which incorporated both International Classification of Diseases, Ninth Revision (ICD-9) and International Classification of Diseases, Tenth Revision (ICD-10) codes. There are tens of thousands of ICD codes in existence, but because TOFC is a free clinic that does not bill or receive reimbursement, the codes did not need to be as specific as they do in a paid clinic. Therefore, the maps put all the variations of each disease into a single category. For example, every patient with diabetes would receive the same ICD code regardless of whether their diabetes was controlled, uncontrolled, or any other variation. The goal of simplifying the codes was to improve compliance with ICD code entry and make reports easier to generate. The maps allowed the options to be simplified and, therefore, more user friendly for both the providers and the data collectors pulling reports. As some ICD-9 codes were already being used, these codes were incorporated so providers could keep using what they were already familiar with. To create the map, generic ICD codes were selected to represent each disease.

An initial survey was conducted prior to implementation with 10 providers, 2 nurses, and 2 staff members, asking which diagnoses they thought were seen most often in the clinic. Based off those answers, a map was created with the 20 most commonly used ICD codes, which can be seen in the Table. A more comprehensive map was also created, with 61 encompassing diagnoses.

table for article


To start the implementation process, providers were emailed an explanation of the project, the ICD code maps, and step-by-step instructions on how to enter a diagnosis into the EHR. Additionally, the 20 most common diagnoses forms were posted on the walls at the provider stations along with pictures illustrating how to input the codes in the EHR. The more comprehensive map was attached to the nurse clipboards that accompanied each encounter. The first night the providers volunteered after receiving the email, the researcher would review with them how to input the diagnosis code and have them test the method on a practice patient, either in person or over the phone.

 

 

A starting report was pulled March 22, 2021, covering encounters between September 6, 2017, and March 22, 2021, for the 20 most common diagnoses. Another report was pulled at the completion of the implementation phase, on June 15, 2021, covering March 22, 2021, to June 15, 2021. Willing providers and staff members were surveyed after implementation completion. The providers were asked whether they use the ICD codes, whether they would do so in the future, and whether they found it helpful when other providers had entered diagnoses. If they answered no to any of the questions, there were asked why, and whether they had any suggestions for improvements. The 4 staff members were asked whether they thought the data were helpful for their role and, if so, how they would use it.

Surveys

Surveys were conducted after the project was completed with willing and available providers and staff members in order to assess the utility of the project as well as to ensure future improvements and sustainability of the system.

Provider surveys

Do you currently input mapped ICD-10 codes when you chart for each encounter?

Yes No

If yes, do you intend to continue inputting the ICD codes in your encounters in the future?

Yes No

If no to either question above, please explain:

Do you have any recommendations for making it easier to input ICD codes or another way to track patients’ diagnoses?

Staff surveys

Is this data helpful for your role?

Yes No

If yes, how will you use this data?

Results

During the implementation phase, hypertension was the most common diagnosis seen at TOFC, accounting for 35 of 131 (27%) top 20 diagnoses entered. Depression was second, accounting for about 20% of diagnoses. Posttraumatic stress disorder was the third most common, making up 18% of diagnoses. There were 157 encounters during the implementation phase and 128 ICD diagnoses entered into the chart during this time period, suggesting that most encounters had a corresponding diagnosis code entered. See the Table for more details.

 

 

Survey results

Provider surveys

Six providers answered the survey questions. Four answered “yes” to both questions and 2 answered “no” to both questions. Reasons cited for why they did not input the ICD codes included not remembering to enter the codes or not remembering how to enter the codes. Recommendations for making it easier included incorporating the diagnosis in the assessment section of the EHR instead of standing alone as its own section, replacing ICD-9 codes with ICD-10 codes on the maps, making more specific codes for options, like typing more mental health diagnoses, and implementing more training on how to enter the codes.

Staff surveys

Three of 4 staff members responded to the survey. All 3 indicated that the data collected from this project assisted in their role. Stated uses for this data included grant applications and funding; community education, such as presentations and outreach; program development and monitoring; quality improvement; supply purchasing (eg, medications in stock to treat most commonly seen conditions), scheduling clinics and providers; allocating resources and supplies; and accepting or rejecting medical supply donations.

Discussion

Before this project, 668 of the top 20 most common diagnosis codes were entered from when TOFC introduced use of the EHR in the clinic in 2017, until the beginning of the implementation phase of this project in March 2021. During the 3 months of the implementation phase, 131 diagnoses were entered, representing almost 20% of the amount that were entered in 3 and a half years. Pulling the reports for these 20 diagnoses took less than 1 hour. During the needs assessment phase of this project, diagnoses for 3 months were extracted from the EHR by combing through provider notes and extracting the data from the notes—a process that took 11 hours.

Knowledge of diagnoses and the reasons for clinic attendance help the clinic make decisions about staffing, resources, and services. The TOFC board of directors used this data to assist with the decision of whether or not to change the clinic’s mission to include primary care as an official clinic function. The original purpose of the clinic was to address acute issues for people who lacked the resources for medical care. For example, a homeless person with an abscess could come to the clinic and have the abscess drained and treated. The results of this project illustrate that, in reality, most of the diagnoses actually seen in the clinic are more chronic in nature and require consistent, ongoing care. For instance, the project identified 52 clinic patients receiving consistent diabetic care. This type of data can help the clinic determine whether it should accept diabetes-associated donations and whether it needs to recruit a volunteer diabetes educator. Generally, this data can help guide other decisions as well, like what medications should be kept in the pharmacy, whether there are certain specialists the clinic should seek to partner with, and whether the clinic should embark on any particular education campaigns. By inputting ICD codes, diagnosis data are easily obtained to assist with future decisions.

A limitation of this project was that the reports could only be pulled within a certain time frame if the start date of the diagnosis was specified. As most providers did not indicate a start date with their entered diagnosis code, the only way to compare the before and after was to count the total before and the total after the implementation time frame. In other words, comparison reports could not be pulled retroactively, so some data on the less common diagnosis codes are missing from this paper, as reports for the comprehensive map were not pulled ahead of time. Providers may have omitted the start date when entering the diagnosis codes because many of these patients had their diagnoses for years—seeing different providers each time—so starting the diagnosis at that particular encounter did not make sense. Additionally, during training, although how to enter the start date was demonstrated, the emphasis and priority was placed on actually entering the ICD code, in an effort to keep the process simple and increase participation.

Conclusion

Evidence-based care and informed decision-making require data. In a free clinic, this can be difficult to obtain due to limited staffing and the absence of billing and insurance requirements. ICD codes and EHRs are powerful tools to collect data and information about clinic needs. This project improved TOFC’s knowledge about what kind of patients and diagnoses they see.

Corresponding author: Sarah M. Shanahan, MSN, RN, Pacific Lutheran University School of Nursing, Ramstad, Room 214, Tacoma, WA 98447; [email protected].

Financial disclosures: None.

References

1. National Association of Free and Charitable Clinics. 2021 NAFC Member Data & Standards Report. https://www.nafcclinics.org/sites/default/files/NAFC%202021%20Data%20Report%20Final.pdf

2. Lee JS, Combs K, Pasarica M; KNIGHTS Research Group. Improving efficiency while improving patient care in a student-run free clinic. J Am Board Fam Med. 2017;30(4):513-519. doi:10.3122/jabfm.2017.04.170044

3. Lu KB, Thiel B, Atkins CA, et al. Satisfaction with healthcare received at an interprofessional student-run free clinic: invested in training the next generation of healthcare professionals. Cureus. 2018;10(3):e2282. doi:10.7759/cureus.2282

4. Tran T, Briones C, Gillet AS, et al. “Knowing” your population: who are we caring for at Tulane University School of Medicine’s student-run free clinics? J Public Health (Oxf). 2020:1-7. doi:10.1007/s10389-020-01389-7

5. Sennett C. Healthcare reform: quality outcomes measurement and reporting. Am Health Drug Benefits. 2010;3(5):350-352.

6. Mazzali C, Duca P. Use of administrative data in healthcare research. Intern Emerg Med. 2015;10(4):517-524. doi:10.1007/s11739-015-1213-9

7. Moons E, Khanna A, Akkasi A, Moens MF. A comparison of deep learning methods for ICD coding of clinical records. Appl Sci. 2020;10(15):5262. doi:10.3390/app10155262

8. Finkelman A. Quality Improvement: A Guide for Integration in Nursing. Jones & Bartlett Learning; 2018.

References

1. National Association of Free and Charitable Clinics. 2021 NAFC Member Data & Standards Report. https://www.nafcclinics.org/sites/default/files/NAFC%202021%20Data%20Report%20Final.pdf

2. Lee JS, Combs K, Pasarica M; KNIGHTS Research Group. Improving efficiency while improving patient care in a student-run free clinic. J Am Board Fam Med. 2017;30(4):513-519. doi:10.3122/jabfm.2017.04.170044

3. Lu KB, Thiel B, Atkins CA, et al. Satisfaction with healthcare received at an interprofessional student-run free clinic: invested in training the next generation of healthcare professionals. Cureus. 2018;10(3):e2282. doi:10.7759/cureus.2282

4. Tran T, Briones C, Gillet AS, et al. “Knowing” your population: who are we caring for at Tulane University School of Medicine’s student-run free clinics? J Public Health (Oxf). 2020:1-7. doi:10.1007/s10389-020-01389-7

5. Sennett C. Healthcare reform: quality outcomes measurement and reporting. Am Health Drug Benefits. 2010;3(5):350-352.

6. Mazzali C, Duca P. Use of administrative data in healthcare research. Intern Emerg Med. 2015;10(4):517-524. doi:10.1007/s11739-015-1213-9

7. Moons E, Khanna A, Akkasi A, Moens MF. A comparison of deep learning methods for ICD coding of clinical records. Appl Sci. 2020;10(15):5262. doi:10.3390/app10155262

8. Finkelman A. Quality Improvement: A Guide for Integration in Nursing. Jones & Bartlett Learning; 2018.

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The Use of Nasogastric Tube Bridle Kits in COVID-19 Intensive Care Unit Patients

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The Use of Nasogastric Tube Bridle Kits in COVID-19 Intensive Care Unit Patients

From Queen Elizabeth Hospital Birmingham, Mindelsohn Way, Birmingham, United Kingdom.

Objective: To ascertain the extent of nasogastric tube (NGT) dislodgment in COVID-19 intensive care unit (ICU) patients after the introduction of NGT bridle kits as a standard of practice, to see whether this would reduce the number of NGT insertions, patient irradiation, missed feeds, and overall cost.

Background: Nasogastric feeding is the mainstay of enteral feeding for ICU patients. The usual standard of practice is to secure the tube using adhesive tape. Studies show this method has a 40% to 48% dislodgment rate. The COVID-19 ICU patient population may be at even greater risk due to the need for proning, long duration of invasive ventilation, and emergence delirium.

Design: This was a 2-cycle quality improvement project. The first cycle was done retrospectively, looking at the contemporaneous standard of practice where bridle kits were not used. This gave an objective measure of the extent of NGT displacement, associated costs, and missed feeds. The second cycle was carried out prospectively, with the use of NGT bridle kits as the new standard of practice.

Setting: A large United Kingdom teaching hospital with a 100-bed, single-floor ICU.

Participants: Patients admitted to the ICU with COVID-19 who subsequently required sedation and invasive ventilation.

Measurements: Measurements included days of feeding required, hours of feeding missed due to NGT dislodgment, total number of nasogastric tubes required per ICU stay, and number of chest radiographs for NGT position confirmation. NGT-related pressure sores were also recorded.

Results: When compared to the bridled group, the unbridled group required a higher number of NGTs (2.5 vs 1.3; P< .001) and chest radiographs (3.4 vs 1.6; P < .001), had more hours of feeding missed (11.8 vs 5.0), and accumulated a slightly higher total cost (cost of NGT, chest radiographs +/- bridle kit: £211.67 vs £210, [US $284.25 vs US $282.01]).

Conclusions: The use of NGT bridle kits reduces the number of NGT insertions patients require and subsequently reduces the number of chest radiographs for each patient. These patients also miss fewer feeds, with no appreciable increase in cost.

Keywords: nasogastric, bridle, enteral, COVID-19, intensive care, quality improvement, safety.

 

 

The COVID-19 pandemic has led to a large influx of patients to critical care units in the United Kingdom (UK) and across the world. Figures from the Intensive Care National Audit & Research Centre in May 2020 show that the median length of stay for COVID-19 survivors requiring invasive ventilatory support while on the intensive care unit (ICU) was 15 days.1 For these days at the very least, patients are completely reliant on enteral feeding in order to meet their nutritional requirements.The standard method of enteral feeding when a patient is sedated and ventilated is via a nasogastric tube (NGT). Incorrect placement of an NGT can have devastating consequences, including pneumothorax, fistula formation, ulceration, sepsis, and death. Between September 2011 and March 2016, the National Patient Safety Agency in the UK recorded 95 incidents of feeding into the respiratory tract as a result of incorrect NGT placement.2 With the onset of the pandemic, the prevalence of NGT misplacement increased, with the NHS Improvement team reporting 7 cases of misplaced NGTs within just 3 months (April 1, 2020, through June 30, 2020).3 With over 3 million nasogastric or orogastric tubes inserted each year in the UK, the risk of adverse events is very real.

NGT dislodgment is common, with 1 study putting this figure at 40%.4 Recurrent dislodgment of NGTs disrupts nutrition and may lead to the patient missing a feed in a time where nutrition is vital during acute illness. Research has showed that NGT bridling reduces the rate of dislodgment significantly (from 40% to 14%).5 Moreover, a 2018 systematic review looking specifically at NGT dislodgment found 10 out of 11 studies showed a significant reduction in dislodgment following use of a bridle kit.6 Bridling an NGT has been shown to significantly reduce the need for percutaneous endoscopic gastrostomy insertion.7 NGT bridle kits have already been used successfully in ICU burn patients, where sloughed skin makes securement particularly difficult with traditional methods.With each repeated insertion comes the risk of incorrect placement. COVID-19 ICU patients had specific risk factors for their NGTs becoming dislodged: duration of NGT feeding (in the ICU and on the ward), requirement for proning and de-proning, and post-emergence confusion related to long duration of sedation. Repeated NGT insertion comes with potential risks to the patient and staff, as well as a financial cost. Patient-specific risks include potential for incorrect placement, missed feedings, irradiation (from the patient’s own chest radiograph and from others), and discomfort from manual handling and repeat reinsertions. Staff risk factors include radiation scatter from portable radiographs (especially when dealing with more than 1 patient per bed space), manual handling, and increased pressure on radiographers. Finally, financial costs are related to the NGTs themselves as well as the portable chest radiograph, which our Superintendent Radiographer estimates to be £55 (US $73.86).

The objective of this study was to ascertain the extent of NGT dislodgment in COVID-19 ICU patients after the introduction of NGT bridle kits as a standard of practice and to determine whether this would reduce the number of NGT insertions, patient irradiation, missed feedings, and overall costs. With the introduction of bridle kits, incidence of pressure sores related to the bridle kit were also recorded.

Methods

Data were collected over 2 cycles, the first retrospectively and the second prospectively, once NGT bridle kits were introduced as an intervention.

Cycle 1. Analyzing the current standard of practice: regular NGT insertion with no use of bridle kit

Cycle 1 was done retrospectively, looking at 30 patient notes of COVID-19 patients admitted to the critical care unit (CCU) between March 11, 2020, and April 20, 2020, at Queen Elizabeth Hospital Birmingham, Birmingham, UK. All patients admitted to the ICU with COVID-19 requiring invasive ventilation were eligible for inclusion in the study. A total of 32 patients were admitted during this time; however, 2 patients were excluded due to NGTs being inserted prior to ICU admission.

 

 

Individual patient notes were searched for:

  • days of feeding required during their inpatient stay (this included NGT feeding on the ward post-ICU discharge).
  • hours of feeding missed while waiting for NGT reinsertion or chest radiograph due to dislodged or displaced NGTs (during the entire period of enteral feeding, ICU, and ward).
  • number of NGT insertions.
  • number of chest radiographs purely for NGT position.

Each patient’s first day of feeding and NGT insertion were noted. Following that, the patient electronic note system, the Prescribing Information and Communication System, was used to look for any further chest radiograph requests, which were primarily for NGT position. Using the date and time, the “critical care observations” tab was used to look at fluids and to calculate how long NGT feeding was stopped while NGT position-check x-rays were being awaited. The notes were also checked at this date and time to work out whether a new NGT was inserted or whether an existing tube had been dislodged (if not evident from the x-ray request). Data collection was stopped once either of the following occurred:

  • patient no longer required NGT feeding.
  • patient was transferred to another hospital.
  • death.

The cost of the NGT was averaged between the cost of size 8 and 12, which worked out to be £10 (US $13.43). As mentioned earlier, each radiograph cost was determined by the Superintendent Radiographer (£55).

Cycle 2. Implementing a change: introduction of NGT bridle kit (Applied Medical Technology Bridle) as standard of practice

The case notes of 54 patients admitted to the COVID-19 CCU at the Queen Elizabeth Hospital Birmingham, Birmingham, UK, were retrospectively reviewed between February 8, 2021, and April 17, 2021. The inclusion criteria consisted of: admitted to the CCU due to COVID-19, required NGT feeding, and was bridled on admission. Case notes were retrospectively reviewed for:

  • Length of CCU stay
  • Days of feeding required during the hospital stay
  • Hours of feeding missed while waiting for a chest radiograph due to displaced NGTs
  • Number of NGT insertions
  • Number of chest radiographs to confirm NGT position
  • Bridling of NGTs
  • Documented pressure sores related to the bridle or NGT, or referrals for wound management advice (Tissue Viability Team) as a consequence of the NGT bridle

Results

Of the 54 patients admitted, 31 had their NGTs bridled. Data were collected as in the first cycle, with individual notes analyzed on the online system (Table). Additionally, notes were reviewed for documentation of pressure sores related to NGT bridling, and the “requests” tab as well as the “noting” function were used to identify referrals for “Wound Management Advice” (Tissue Viability Review).

 

 

The average length of stay for this ICU cohort was 17.6 days. This reiterates the reliance on NGT feeding of patients admitted to the CCU. The results from this project can be summarized as follows: The use of NGT bridle kits leads to a significant reduction in the total number of NGTs a patient requires during intensive care. As a result, there is a significant reduction in the number of chest radiographs required to confirm NGT position. Feedings missed can also be reduced by using a bridle kit. These advantages all come with no additional cost.

On average, bridled patients required 1.3 NGTs, compared to 2.5 before bridles were introduced. The fewer NGTs inserted, the less chance of an NGT-associated injury occurring.

The number of chest radiographs required to confirm NGT position after resiting also fell, from 3.4 to 1.6. This has numerous advantages. There is a financial savings of £99 (US $133.04) per patient from the reduced number of chest x-rays. Although this does not offset the price of the bridle kit itself, there are other less easily quantifiable costs that are reduced. For instance, patients are highly catabolic during severe infection, and their predominant energy source comes from their feedings. Missed feedings are associated with longer length of stay in the ICU and in the hospital in general.9 Bridle kits have the potential to reduce the number of missed feedings by ensuring the NGT remains in the correct position.

Discussion

Many of the results are aligned with what is already known in the literature. A meta-analysis from 2014 concluded that dislodgment is reduced with the use of a bridle kit.6 This change is what underpins many of the advantages seen, as an NGT that stays in place means additional radiographs are not required and feeding is not delayed.

COVID-19 critical care patients are very fragile and are dependent on ventilators for the majority of their stay. They are often on very high levels of ventilator support and moving the patient can lead to desaturation or difficulties in ventilation. Therefore, reduction in any manual handling occurring as a result of the need for portable chest radiographs minimizes the chances of further negative events. Furthermore, nursing staff, along with the radiographers, are often the ones who must move these patients in order for the x-ray film to be placed behind the patient. This task is not easy, especially with limited personnel, and has the potential to cause injuries to both patients and staff members.

 

 

The knock-on effect of reduced NGTs and x-rays is also a reduction of work for the portable radiography team, in what is a very time- and resource-consuming process of coming onto the COVID-19 CCU. Not only does the machine itself need to be wiped down thoroughly after use, but also the individual must use personal protective equipment (PPE) each time. There is a cost associated with PPE itself, as well as the time it takes to don and doff appropriately.

A reduction in chest radiographs reduces the irradiation of the patient and the potential irradiation of staff members. With bridling of the NGT, the radiation exposure is more than halved for the patient. Because the COVID ICU is often very busy, with patients in some cases being doubled up in a bed space, the scatter radiation is high. This can be reduced if fewer chest radiographs are required.

An additional benefit of a reduction in the mean number of NGT insertions per patient is also illustrated by anecdotal evidence. Over the studied period, we identified 2 traumatic pneumothoraces related to NGT insertion on the COVID-19 CCU, highlighting the potential risks of NGT insertion and the need to reduce its frequency, if possible.

One concern noted was that bridles could cause increased incidence of pressure sores. In the patients represented in this study, only 1 suffered a pressure sore (grade 2) directly related to the bridle. A subpopulation of patients not bridled was also noted. This was significantly smaller than the main group; however, we had noted 2 incidences of pressure sores from their standard NGT and securement devices. Some studies have alluded to the potential for increased skin complications with bridle kits; however, studies looking specifically at kits using umbilical tape (as in this study) show no significant increase in skin damage.10 This leaves us confident that there is no increased risk of pressure sores related to the bridling of patients when umbilical tape is used with the bridle kit.

NGT bridles require training to insert safely. With the introduction of bridling, our hospital’s nursing staff underwent training in order to be proficient with the bridle kits. This comes with a time commitment, and, like other equipment usage, it takes time to build confidence. However, in this study, there were no concerns raised from nursing staff regarding difficulty of insertion or the time taken to do so.

 

 

Our study adds an objective measure of the benefits provided by bridle kits. Not only was there a reduction in the number of NGT insertions required, but we were also able to show a significant reduction in the number of chest radiographs required as well in the amount of time feeding is missed. While apprehension regarding bridle kits may be focused on cost, this study has shown that the savings more than make up for the initial cost of the kit itself.

Although the patient demographics, systemic effects, and treatment of COVID-19 are similar between different ICUs, a single-center study does have limitations. One of these is the potential for an intervention in a single-center study to lead to a larger effect than that of multicenter studies.11 But as seen in previous studies, the dislodgment of NGTs is not just an issue in this ICU.12 COVID-19–specific risk factors for NGT dislodgment also apply to all patients requiring invasive ventilation and proning.

Identification of whether a new NGT was inserted, or whether the existing NGT was replaced following dislodging of an NGT, relied on accurate documentation by the relevant staff. The case notes did not always make this explicitly clear. Unlike other procedures commonly performed, documentation of NGT insertion is not formally done under the procedures heading, and, on occasion is not done at all. We recognize that manually searching notes only yields NGT insertions that have been formally documented. There is a potential for the number recorded to be lower than the actual number of NGTs inserted. However, when x-ray requests are cross-referenced with the notes, there is a significant degree of confidence that the vast majority of insertions are picked up.

One patient identified in the study required a Ryle’s tube as part of their critical care treatment. While similar in nature to an NGT, these are unable to fit into a bridle and are at increased risk of dislodging during the patient’s critical care stay. The intended benefit of the bridle kit does not therefore extend to patients with Ryle’s tubes.

Conclusion

The COVID-19 critical care population requires significant time on invasive ventilation and remains dependent on NGT feeding during this process. The risk of NGT dislodgment can be mitigated by using a bridle kit, as the number of NGT insertions a patient requires is significantly reduced. Not only does this reduce the risk of inadvertent misplacement but also has a cost savings, as well as increasing safety for staff and patients. From this study, the risk of pressure injuries is not significant. The benefit of NGT bridling may be extended to other non-COVID long-stay ICU patients.

Future research looking at the efficacy of bridle kits in larger patient groups will help confirm the benefits seen in this study and will also provide better information with regard to any long-term complications associated with bridles.

Corresponding author: Rajveer Atkar, MBBS, Queen Elizabeth Hospital Birmingham, Mindelsohn Way, Birmingham B15 2GW, United Kingdom; [email protected].

Financial disclosures: None.

References

1. Intensive Care National Audit & Research Centre. ICNARC report on COVID-19 in critical care 15 May 2020. https://www.icnarc.org/DataServices/Attachments/Download/cbcb6217-f698-ea11-9125-00505601089b

2. NHS. Nasogastric tube misplacement: continuing risk of death and severe harm. July 22, 2016. https://www.england.nhs.uk/2016/07/nasogastric-tube-misplacement-continuing-risk-of-death-severe-harm/

3. NHS. Provisional publication of never events reported as occurring between 1 April and 30 June 2020. https://www.england.nhs.uk/wp-content/uploads/2020/08/Provisional_publication_-_NE_1_April_-_30_June_2020.pdf

4. Meer JA. Inadvertent dislodgement of nasoenteral feeding tubes: incidence and prevention. JPEN J Parenter Enteral Nutr. 1987;11(2):187- 189. doi:10.1177/0148607187011002187

5. Bechtold ML, Nguyen DL, Palmer L, et al. Nasal bridles for securing nasoenteric tubes: a meta-analysis. Nutr Clin Pract. 2014;29(5):667-671. doi:10.1177/0884533614536737

6. Lynch A, Tang CS, Jeganathan LS, Rockey JG. A systematic review of the effectiveness and complications of using nasal bridles to secure nasoenteral feeding tubes. Aust J Otolaryngol. 2018;1:8. doi:10.21037/ajo.2018.01.01

7. Johnston R, O’Dell L, Patrick M, Cole OT, Cunliffe N. Outcome of patients fed via a nasogastric tube retained with a bridle loop: Do bridle loops reduce the requirement for percutaneous endoscopic gastrostomy insertion and 30-day mortality? Proc Nutr Soc. 2008;67:E116. doi:10.1017/S0029665108007489

8. Li AY, Rustad KC, Long C, et al. Reduced incidence of feeding tube dislodgement and missed feeds in burn patients with nasal bridle securement. Burns. 2018;44(5):1203-1209. doi:10.1016/j.burns.2017.05.025

9. Peev MP, Yeh DD, Quraishi SA, et al. Causes and consequences of interrupted enteral nutrition: a prospective observational study in critically ill surgical patients. JPEN J Parenter Enteral Nutr. 2015;39(1):21-27. doi:10.1177/0148607114526887

10. Seder CW, Janczyk R. The routine bridling of nasjejunal tubes is a safe and effective method of reducing dislodgement in the intensive care unit. Nutr Clin Pract. 2008;23(6):651-654. doi:10.1177/0148607114526887

11. Dechartres A, Boutron I, Trinquart L, Charles P, Ravaud P. Single-center trials show larger treatment effects than multicenter trials: evidence from a meta-epidemiologic study. Ann Intern Med. 2011;155:39-51. doi:10.7326/0003-4819-155-1-201107050-00006

12. Morton B, Hall R, Ridgway T, Al-Rawi O. Nasogastric tube dislodgement: a problem on our ICU. Crit Care. 2013;17(suppl 2):P242. doi:10.1186/cc12180

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From Queen Elizabeth Hospital Birmingham, Mindelsohn Way, Birmingham, United Kingdom.

Objective: To ascertain the extent of nasogastric tube (NGT) dislodgment in COVID-19 intensive care unit (ICU) patients after the introduction of NGT bridle kits as a standard of practice, to see whether this would reduce the number of NGT insertions, patient irradiation, missed feeds, and overall cost.

Background: Nasogastric feeding is the mainstay of enteral feeding for ICU patients. The usual standard of practice is to secure the tube using adhesive tape. Studies show this method has a 40% to 48% dislodgment rate. The COVID-19 ICU patient population may be at even greater risk due to the need for proning, long duration of invasive ventilation, and emergence delirium.

Design: This was a 2-cycle quality improvement project. The first cycle was done retrospectively, looking at the contemporaneous standard of practice where bridle kits were not used. This gave an objective measure of the extent of NGT displacement, associated costs, and missed feeds. The second cycle was carried out prospectively, with the use of NGT bridle kits as the new standard of practice.

Setting: A large United Kingdom teaching hospital with a 100-bed, single-floor ICU.

Participants: Patients admitted to the ICU with COVID-19 who subsequently required sedation and invasive ventilation.

Measurements: Measurements included days of feeding required, hours of feeding missed due to NGT dislodgment, total number of nasogastric tubes required per ICU stay, and number of chest radiographs for NGT position confirmation. NGT-related pressure sores were also recorded.

Results: When compared to the bridled group, the unbridled group required a higher number of NGTs (2.5 vs 1.3; P< .001) and chest radiographs (3.4 vs 1.6; P < .001), had more hours of feeding missed (11.8 vs 5.0), and accumulated a slightly higher total cost (cost of NGT, chest radiographs +/- bridle kit: £211.67 vs £210, [US $284.25 vs US $282.01]).

Conclusions: The use of NGT bridle kits reduces the number of NGT insertions patients require and subsequently reduces the number of chest radiographs for each patient. These patients also miss fewer feeds, with no appreciable increase in cost.

Keywords: nasogastric, bridle, enteral, COVID-19, intensive care, quality improvement, safety.

 

 

The COVID-19 pandemic has led to a large influx of patients to critical care units in the United Kingdom (UK) and across the world. Figures from the Intensive Care National Audit & Research Centre in May 2020 show that the median length of stay for COVID-19 survivors requiring invasive ventilatory support while on the intensive care unit (ICU) was 15 days.1 For these days at the very least, patients are completely reliant on enteral feeding in order to meet their nutritional requirements.The standard method of enteral feeding when a patient is sedated and ventilated is via a nasogastric tube (NGT). Incorrect placement of an NGT can have devastating consequences, including pneumothorax, fistula formation, ulceration, sepsis, and death. Between September 2011 and March 2016, the National Patient Safety Agency in the UK recorded 95 incidents of feeding into the respiratory tract as a result of incorrect NGT placement.2 With the onset of the pandemic, the prevalence of NGT misplacement increased, with the NHS Improvement team reporting 7 cases of misplaced NGTs within just 3 months (April 1, 2020, through June 30, 2020).3 With over 3 million nasogastric or orogastric tubes inserted each year in the UK, the risk of adverse events is very real.

NGT dislodgment is common, with 1 study putting this figure at 40%.4 Recurrent dislodgment of NGTs disrupts nutrition and may lead to the patient missing a feed in a time where nutrition is vital during acute illness. Research has showed that NGT bridling reduces the rate of dislodgment significantly (from 40% to 14%).5 Moreover, a 2018 systematic review looking specifically at NGT dislodgment found 10 out of 11 studies showed a significant reduction in dislodgment following use of a bridle kit.6 Bridling an NGT has been shown to significantly reduce the need for percutaneous endoscopic gastrostomy insertion.7 NGT bridle kits have already been used successfully in ICU burn patients, where sloughed skin makes securement particularly difficult with traditional methods.With each repeated insertion comes the risk of incorrect placement. COVID-19 ICU patients had specific risk factors for their NGTs becoming dislodged: duration of NGT feeding (in the ICU and on the ward), requirement for proning and de-proning, and post-emergence confusion related to long duration of sedation. Repeated NGT insertion comes with potential risks to the patient and staff, as well as a financial cost. Patient-specific risks include potential for incorrect placement, missed feedings, irradiation (from the patient’s own chest radiograph and from others), and discomfort from manual handling and repeat reinsertions. Staff risk factors include radiation scatter from portable radiographs (especially when dealing with more than 1 patient per bed space), manual handling, and increased pressure on radiographers. Finally, financial costs are related to the NGTs themselves as well as the portable chest radiograph, which our Superintendent Radiographer estimates to be £55 (US $73.86).

The objective of this study was to ascertain the extent of NGT dislodgment in COVID-19 ICU patients after the introduction of NGT bridle kits as a standard of practice and to determine whether this would reduce the number of NGT insertions, patient irradiation, missed feedings, and overall costs. With the introduction of bridle kits, incidence of pressure sores related to the bridle kit were also recorded.

Methods

Data were collected over 2 cycles, the first retrospectively and the second prospectively, once NGT bridle kits were introduced as an intervention.

Cycle 1. Analyzing the current standard of practice: regular NGT insertion with no use of bridle kit

Cycle 1 was done retrospectively, looking at 30 patient notes of COVID-19 patients admitted to the critical care unit (CCU) between March 11, 2020, and April 20, 2020, at Queen Elizabeth Hospital Birmingham, Birmingham, UK. All patients admitted to the ICU with COVID-19 requiring invasive ventilation were eligible for inclusion in the study. A total of 32 patients were admitted during this time; however, 2 patients were excluded due to NGTs being inserted prior to ICU admission.

 

 

Individual patient notes were searched for:

  • days of feeding required during their inpatient stay (this included NGT feeding on the ward post-ICU discharge).
  • hours of feeding missed while waiting for NGT reinsertion or chest radiograph due to dislodged or displaced NGTs (during the entire period of enteral feeding, ICU, and ward).
  • number of NGT insertions.
  • number of chest radiographs purely for NGT position.

Each patient’s first day of feeding and NGT insertion were noted. Following that, the patient electronic note system, the Prescribing Information and Communication System, was used to look for any further chest radiograph requests, which were primarily for NGT position. Using the date and time, the “critical care observations” tab was used to look at fluids and to calculate how long NGT feeding was stopped while NGT position-check x-rays were being awaited. The notes were also checked at this date and time to work out whether a new NGT was inserted or whether an existing tube had been dislodged (if not evident from the x-ray request). Data collection was stopped once either of the following occurred:

  • patient no longer required NGT feeding.
  • patient was transferred to another hospital.
  • death.

The cost of the NGT was averaged between the cost of size 8 and 12, which worked out to be £10 (US $13.43). As mentioned earlier, each radiograph cost was determined by the Superintendent Radiographer (£55).

Cycle 2. Implementing a change: introduction of NGT bridle kit (Applied Medical Technology Bridle) as standard of practice

The case notes of 54 patients admitted to the COVID-19 CCU at the Queen Elizabeth Hospital Birmingham, Birmingham, UK, were retrospectively reviewed between February 8, 2021, and April 17, 2021. The inclusion criteria consisted of: admitted to the CCU due to COVID-19, required NGT feeding, and was bridled on admission. Case notes were retrospectively reviewed for:

  • Length of CCU stay
  • Days of feeding required during the hospital stay
  • Hours of feeding missed while waiting for a chest radiograph due to displaced NGTs
  • Number of NGT insertions
  • Number of chest radiographs to confirm NGT position
  • Bridling of NGTs
  • Documented pressure sores related to the bridle or NGT, or referrals for wound management advice (Tissue Viability Team) as a consequence of the NGT bridle

Results

Of the 54 patients admitted, 31 had their NGTs bridled. Data were collected as in the first cycle, with individual notes analyzed on the online system (Table). Additionally, notes were reviewed for documentation of pressure sores related to NGT bridling, and the “requests” tab as well as the “noting” function were used to identify referrals for “Wound Management Advice” (Tissue Viability Review).

 

 

The average length of stay for this ICU cohort was 17.6 days. This reiterates the reliance on NGT feeding of patients admitted to the CCU. The results from this project can be summarized as follows: The use of NGT bridle kits leads to a significant reduction in the total number of NGTs a patient requires during intensive care. As a result, there is a significant reduction in the number of chest radiographs required to confirm NGT position. Feedings missed can also be reduced by using a bridle kit. These advantages all come with no additional cost.

On average, bridled patients required 1.3 NGTs, compared to 2.5 before bridles were introduced. The fewer NGTs inserted, the less chance of an NGT-associated injury occurring.

The number of chest radiographs required to confirm NGT position after resiting also fell, from 3.4 to 1.6. This has numerous advantages. There is a financial savings of £99 (US $133.04) per patient from the reduced number of chest x-rays. Although this does not offset the price of the bridle kit itself, there are other less easily quantifiable costs that are reduced. For instance, patients are highly catabolic during severe infection, and their predominant energy source comes from their feedings. Missed feedings are associated with longer length of stay in the ICU and in the hospital in general.9 Bridle kits have the potential to reduce the number of missed feedings by ensuring the NGT remains in the correct position.

Discussion

Many of the results are aligned with what is already known in the literature. A meta-analysis from 2014 concluded that dislodgment is reduced with the use of a bridle kit.6 This change is what underpins many of the advantages seen, as an NGT that stays in place means additional radiographs are not required and feeding is not delayed.

COVID-19 critical care patients are very fragile and are dependent on ventilators for the majority of their stay. They are often on very high levels of ventilator support and moving the patient can lead to desaturation or difficulties in ventilation. Therefore, reduction in any manual handling occurring as a result of the need for portable chest radiographs minimizes the chances of further negative events. Furthermore, nursing staff, along with the radiographers, are often the ones who must move these patients in order for the x-ray film to be placed behind the patient. This task is not easy, especially with limited personnel, and has the potential to cause injuries to both patients and staff members.

 

 

The knock-on effect of reduced NGTs and x-rays is also a reduction of work for the portable radiography team, in what is a very time- and resource-consuming process of coming onto the COVID-19 CCU. Not only does the machine itself need to be wiped down thoroughly after use, but also the individual must use personal protective equipment (PPE) each time. There is a cost associated with PPE itself, as well as the time it takes to don and doff appropriately.

A reduction in chest radiographs reduces the irradiation of the patient and the potential irradiation of staff members. With bridling of the NGT, the radiation exposure is more than halved for the patient. Because the COVID ICU is often very busy, with patients in some cases being doubled up in a bed space, the scatter radiation is high. This can be reduced if fewer chest radiographs are required.

An additional benefit of a reduction in the mean number of NGT insertions per patient is also illustrated by anecdotal evidence. Over the studied period, we identified 2 traumatic pneumothoraces related to NGT insertion on the COVID-19 CCU, highlighting the potential risks of NGT insertion and the need to reduce its frequency, if possible.

One concern noted was that bridles could cause increased incidence of pressure sores. In the patients represented in this study, only 1 suffered a pressure sore (grade 2) directly related to the bridle. A subpopulation of patients not bridled was also noted. This was significantly smaller than the main group; however, we had noted 2 incidences of pressure sores from their standard NGT and securement devices. Some studies have alluded to the potential for increased skin complications with bridle kits; however, studies looking specifically at kits using umbilical tape (as in this study) show no significant increase in skin damage.10 This leaves us confident that there is no increased risk of pressure sores related to the bridling of patients when umbilical tape is used with the bridle kit.

NGT bridles require training to insert safely. With the introduction of bridling, our hospital’s nursing staff underwent training in order to be proficient with the bridle kits. This comes with a time commitment, and, like other equipment usage, it takes time to build confidence. However, in this study, there were no concerns raised from nursing staff regarding difficulty of insertion or the time taken to do so.

 

 

Our study adds an objective measure of the benefits provided by bridle kits. Not only was there a reduction in the number of NGT insertions required, but we were also able to show a significant reduction in the number of chest radiographs required as well in the amount of time feeding is missed. While apprehension regarding bridle kits may be focused on cost, this study has shown that the savings more than make up for the initial cost of the kit itself.

Although the patient demographics, systemic effects, and treatment of COVID-19 are similar between different ICUs, a single-center study does have limitations. One of these is the potential for an intervention in a single-center study to lead to a larger effect than that of multicenter studies.11 But as seen in previous studies, the dislodgment of NGTs is not just an issue in this ICU.12 COVID-19–specific risk factors for NGT dislodgment also apply to all patients requiring invasive ventilation and proning.

Identification of whether a new NGT was inserted, or whether the existing NGT was replaced following dislodging of an NGT, relied on accurate documentation by the relevant staff. The case notes did not always make this explicitly clear. Unlike other procedures commonly performed, documentation of NGT insertion is not formally done under the procedures heading, and, on occasion is not done at all. We recognize that manually searching notes only yields NGT insertions that have been formally documented. There is a potential for the number recorded to be lower than the actual number of NGTs inserted. However, when x-ray requests are cross-referenced with the notes, there is a significant degree of confidence that the vast majority of insertions are picked up.

One patient identified in the study required a Ryle’s tube as part of their critical care treatment. While similar in nature to an NGT, these are unable to fit into a bridle and are at increased risk of dislodging during the patient’s critical care stay. The intended benefit of the bridle kit does not therefore extend to patients with Ryle’s tubes.

Conclusion

The COVID-19 critical care population requires significant time on invasive ventilation and remains dependent on NGT feeding during this process. The risk of NGT dislodgment can be mitigated by using a bridle kit, as the number of NGT insertions a patient requires is significantly reduced. Not only does this reduce the risk of inadvertent misplacement but also has a cost savings, as well as increasing safety for staff and patients. From this study, the risk of pressure injuries is not significant. The benefit of NGT bridling may be extended to other non-COVID long-stay ICU patients.

Future research looking at the efficacy of bridle kits in larger patient groups will help confirm the benefits seen in this study and will also provide better information with regard to any long-term complications associated with bridles.

Corresponding author: Rajveer Atkar, MBBS, Queen Elizabeth Hospital Birmingham, Mindelsohn Way, Birmingham B15 2GW, United Kingdom; [email protected].

Financial disclosures: None.

From Queen Elizabeth Hospital Birmingham, Mindelsohn Way, Birmingham, United Kingdom.

Objective: To ascertain the extent of nasogastric tube (NGT) dislodgment in COVID-19 intensive care unit (ICU) patients after the introduction of NGT bridle kits as a standard of practice, to see whether this would reduce the number of NGT insertions, patient irradiation, missed feeds, and overall cost.

Background: Nasogastric feeding is the mainstay of enteral feeding for ICU patients. The usual standard of practice is to secure the tube using adhesive tape. Studies show this method has a 40% to 48% dislodgment rate. The COVID-19 ICU patient population may be at even greater risk due to the need for proning, long duration of invasive ventilation, and emergence delirium.

Design: This was a 2-cycle quality improvement project. The first cycle was done retrospectively, looking at the contemporaneous standard of practice where bridle kits were not used. This gave an objective measure of the extent of NGT displacement, associated costs, and missed feeds. The second cycle was carried out prospectively, with the use of NGT bridle kits as the new standard of practice.

Setting: A large United Kingdom teaching hospital with a 100-bed, single-floor ICU.

Participants: Patients admitted to the ICU with COVID-19 who subsequently required sedation and invasive ventilation.

Measurements: Measurements included days of feeding required, hours of feeding missed due to NGT dislodgment, total number of nasogastric tubes required per ICU stay, and number of chest radiographs for NGT position confirmation. NGT-related pressure sores were also recorded.

Results: When compared to the bridled group, the unbridled group required a higher number of NGTs (2.5 vs 1.3; P< .001) and chest radiographs (3.4 vs 1.6; P < .001), had more hours of feeding missed (11.8 vs 5.0), and accumulated a slightly higher total cost (cost of NGT, chest radiographs +/- bridle kit: £211.67 vs £210, [US $284.25 vs US $282.01]).

Conclusions: The use of NGT bridle kits reduces the number of NGT insertions patients require and subsequently reduces the number of chest radiographs for each patient. These patients also miss fewer feeds, with no appreciable increase in cost.

Keywords: nasogastric, bridle, enteral, COVID-19, intensive care, quality improvement, safety.

 

 

The COVID-19 pandemic has led to a large influx of patients to critical care units in the United Kingdom (UK) and across the world. Figures from the Intensive Care National Audit & Research Centre in May 2020 show that the median length of stay for COVID-19 survivors requiring invasive ventilatory support while on the intensive care unit (ICU) was 15 days.1 For these days at the very least, patients are completely reliant on enteral feeding in order to meet their nutritional requirements.The standard method of enteral feeding when a patient is sedated and ventilated is via a nasogastric tube (NGT). Incorrect placement of an NGT can have devastating consequences, including pneumothorax, fistula formation, ulceration, sepsis, and death. Between September 2011 and March 2016, the National Patient Safety Agency in the UK recorded 95 incidents of feeding into the respiratory tract as a result of incorrect NGT placement.2 With the onset of the pandemic, the prevalence of NGT misplacement increased, with the NHS Improvement team reporting 7 cases of misplaced NGTs within just 3 months (April 1, 2020, through June 30, 2020).3 With over 3 million nasogastric or orogastric tubes inserted each year in the UK, the risk of adverse events is very real.

NGT dislodgment is common, with 1 study putting this figure at 40%.4 Recurrent dislodgment of NGTs disrupts nutrition and may lead to the patient missing a feed in a time where nutrition is vital during acute illness. Research has showed that NGT bridling reduces the rate of dislodgment significantly (from 40% to 14%).5 Moreover, a 2018 systematic review looking specifically at NGT dislodgment found 10 out of 11 studies showed a significant reduction in dislodgment following use of a bridle kit.6 Bridling an NGT has been shown to significantly reduce the need for percutaneous endoscopic gastrostomy insertion.7 NGT bridle kits have already been used successfully in ICU burn patients, where sloughed skin makes securement particularly difficult with traditional methods.With each repeated insertion comes the risk of incorrect placement. COVID-19 ICU patients had specific risk factors for their NGTs becoming dislodged: duration of NGT feeding (in the ICU and on the ward), requirement for proning and de-proning, and post-emergence confusion related to long duration of sedation. Repeated NGT insertion comes with potential risks to the patient and staff, as well as a financial cost. Patient-specific risks include potential for incorrect placement, missed feedings, irradiation (from the patient’s own chest radiograph and from others), and discomfort from manual handling and repeat reinsertions. Staff risk factors include radiation scatter from portable radiographs (especially when dealing with more than 1 patient per bed space), manual handling, and increased pressure on radiographers. Finally, financial costs are related to the NGTs themselves as well as the portable chest radiograph, which our Superintendent Radiographer estimates to be £55 (US $73.86).

The objective of this study was to ascertain the extent of NGT dislodgment in COVID-19 ICU patients after the introduction of NGT bridle kits as a standard of practice and to determine whether this would reduce the number of NGT insertions, patient irradiation, missed feedings, and overall costs. With the introduction of bridle kits, incidence of pressure sores related to the bridle kit were also recorded.

Methods

Data were collected over 2 cycles, the first retrospectively and the second prospectively, once NGT bridle kits were introduced as an intervention.

Cycle 1. Analyzing the current standard of practice: regular NGT insertion with no use of bridle kit

Cycle 1 was done retrospectively, looking at 30 patient notes of COVID-19 patients admitted to the critical care unit (CCU) between March 11, 2020, and April 20, 2020, at Queen Elizabeth Hospital Birmingham, Birmingham, UK. All patients admitted to the ICU with COVID-19 requiring invasive ventilation were eligible for inclusion in the study. A total of 32 patients were admitted during this time; however, 2 patients were excluded due to NGTs being inserted prior to ICU admission.

 

 

Individual patient notes were searched for:

  • days of feeding required during their inpatient stay (this included NGT feeding on the ward post-ICU discharge).
  • hours of feeding missed while waiting for NGT reinsertion or chest radiograph due to dislodged or displaced NGTs (during the entire period of enteral feeding, ICU, and ward).
  • number of NGT insertions.
  • number of chest radiographs purely for NGT position.

Each patient’s first day of feeding and NGT insertion were noted. Following that, the patient electronic note system, the Prescribing Information and Communication System, was used to look for any further chest radiograph requests, which were primarily for NGT position. Using the date and time, the “critical care observations” tab was used to look at fluids and to calculate how long NGT feeding was stopped while NGT position-check x-rays were being awaited. The notes were also checked at this date and time to work out whether a new NGT was inserted or whether an existing tube had been dislodged (if not evident from the x-ray request). Data collection was stopped once either of the following occurred:

  • patient no longer required NGT feeding.
  • patient was transferred to another hospital.
  • death.

The cost of the NGT was averaged between the cost of size 8 and 12, which worked out to be £10 (US $13.43). As mentioned earlier, each radiograph cost was determined by the Superintendent Radiographer (£55).

Cycle 2. Implementing a change: introduction of NGT bridle kit (Applied Medical Technology Bridle) as standard of practice

The case notes of 54 patients admitted to the COVID-19 CCU at the Queen Elizabeth Hospital Birmingham, Birmingham, UK, were retrospectively reviewed between February 8, 2021, and April 17, 2021. The inclusion criteria consisted of: admitted to the CCU due to COVID-19, required NGT feeding, and was bridled on admission. Case notes were retrospectively reviewed for:

  • Length of CCU stay
  • Days of feeding required during the hospital stay
  • Hours of feeding missed while waiting for a chest radiograph due to displaced NGTs
  • Number of NGT insertions
  • Number of chest radiographs to confirm NGT position
  • Bridling of NGTs
  • Documented pressure sores related to the bridle or NGT, or referrals for wound management advice (Tissue Viability Team) as a consequence of the NGT bridle

Results

Of the 54 patients admitted, 31 had their NGTs bridled. Data were collected as in the first cycle, with individual notes analyzed on the online system (Table). Additionally, notes were reviewed for documentation of pressure sores related to NGT bridling, and the “requests” tab as well as the “noting” function were used to identify referrals for “Wound Management Advice” (Tissue Viability Review).

 

 

The average length of stay for this ICU cohort was 17.6 days. This reiterates the reliance on NGT feeding of patients admitted to the CCU. The results from this project can be summarized as follows: The use of NGT bridle kits leads to a significant reduction in the total number of NGTs a patient requires during intensive care. As a result, there is a significant reduction in the number of chest radiographs required to confirm NGT position. Feedings missed can also be reduced by using a bridle kit. These advantages all come with no additional cost.

On average, bridled patients required 1.3 NGTs, compared to 2.5 before bridles were introduced. The fewer NGTs inserted, the less chance of an NGT-associated injury occurring.

The number of chest radiographs required to confirm NGT position after resiting also fell, from 3.4 to 1.6. This has numerous advantages. There is a financial savings of £99 (US $133.04) per patient from the reduced number of chest x-rays. Although this does not offset the price of the bridle kit itself, there are other less easily quantifiable costs that are reduced. For instance, patients are highly catabolic during severe infection, and their predominant energy source comes from their feedings. Missed feedings are associated with longer length of stay in the ICU and in the hospital in general.9 Bridle kits have the potential to reduce the number of missed feedings by ensuring the NGT remains in the correct position.

Discussion

Many of the results are aligned with what is already known in the literature. A meta-analysis from 2014 concluded that dislodgment is reduced with the use of a bridle kit.6 This change is what underpins many of the advantages seen, as an NGT that stays in place means additional radiographs are not required and feeding is not delayed.

COVID-19 critical care patients are very fragile and are dependent on ventilators for the majority of their stay. They are often on very high levels of ventilator support and moving the patient can lead to desaturation or difficulties in ventilation. Therefore, reduction in any manual handling occurring as a result of the need for portable chest radiographs minimizes the chances of further negative events. Furthermore, nursing staff, along with the radiographers, are often the ones who must move these patients in order for the x-ray film to be placed behind the patient. This task is not easy, especially with limited personnel, and has the potential to cause injuries to both patients and staff members.

 

 

The knock-on effect of reduced NGTs and x-rays is also a reduction of work for the portable radiography team, in what is a very time- and resource-consuming process of coming onto the COVID-19 CCU. Not only does the machine itself need to be wiped down thoroughly after use, but also the individual must use personal protective equipment (PPE) each time. There is a cost associated with PPE itself, as well as the time it takes to don and doff appropriately.

A reduction in chest radiographs reduces the irradiation of the patient and the potential irradiation of staff members. With bridling of the NGT, the radiation exposure is more than halved for the patient. Because the COVID ICU is often very busy, with patients in some cases being doubled up in a bed space, the scatter radiation is high. This can be reduced if fewer chest radiographs are required.

An additional benefit of a reduction in the mean number of NGT insertions per patient is also illustrated by anecdotal evidence. Over the studied period, we identified 2 traumatic pneumothoraces related to NGT insertion on the COVID-19 CCU, highlighting the potential risks of NGT insertion and the need to reduce its frequency, if possible.

One concern noted was that bridles could cause increased incidence of pressure sores. In the patients represented in this study, only 1 suffered a pressure sore (grade 2) directly related to the bridle. A subpopulation of patients not bridled was also noted. This was significantly smaller than the main group; however, we had noted 2 incidences of pressure sores from their standard NGT and securement devices. Some studies have alluded to the potential for increased skin complications with bridle kits; however, studies looking specifically at kits using umbilical tape (as in this study) show no significant increase in skin damage.10 This leaves us confident that there is no increased risk of pressure sores related to the bridling of patients when umbilical tape is used with the bridle kit.

NGT bridles require training to insert safely. With the introduction of bridling, our hospital’s nursing staff underwent training in order to be proficient with the bridle kits. This comes with a time commitment, and, like other equipment usage, it takes time to build confidence. However, in this study, there were no concerns raised from nursing staff regarding difficulty of insertion or the time taken to do so.

 

 

Our study adds an objective measure of the benefits provided by bridle kits. Not only was there a reduction in the number of NGT insertions required, but we were also able to show a significant reduction in the number of chest radiographs required as well in the amount of time feeding is missed. While apprehension regarding bridle kits may be focused on cost, this study has shown that the savings more than make up for the initial cost of the kit itself.

Although the patient demographics, systemic effects, and treatment of COVID-19 are similar between different ICUs, a single-center study does have limitations. One of these is the potential for an intervention in a single-center study to lead to a larger effect than that of multicenter studies.11 But as seen in previous studies, the dislodgment of NGTs is not just an issue in this ICU.12 COVID-19–specific risk factors for NGT dislodgment also apply to all patients requiring invasive ventilation and proning.

Identification of whether a new NGT was inserted, or whether the existing NGT was replaced following dislodging of an NGT, relied on accurate documentation by the relevant staff. The case notes did not always make this explicitly clear. Unlike other procedures commonly performed, documentation of NGT insertion is not formally done under the procedures heading, and, on occasion is not done at all. We recognize that manually searching notes only yields NGT insertions that have been formally documented. There is a potential for the number recorded to be lower than the actual number of NGTs inserted. However, when x-ray requests are cross-referenced with the notes, there is a significant degree of confidence that the vast majority of insertions are picked up.

One patient identified in the study required a Ryle’s tube as part of their critical care treatment. While similar in nature to an NGT, these are unable to fit into a bridle and are at increased risk of dislodging during the patient’s critical care stay. The intended benefit of the bridle kit does not therefore extend to patients with Ryle’s tubes.

Conclusion

The COVID-19 critical care population requires significant time on invasive ventilation and remains dependent on NGT feeding during this process. The risk of NGT dislodgment can be mitigated by using a bridle kit, as the number of NGT insertions a patient requires is significantly reduced. Not only does this reduce the risk of inadvertent misplacement but also has a cost savings, as well as increasing safety for staff and patients. From this study, the risk of pressure injuries is not significant. The benefit of NGT bridling may be extended to other non-COVID long-stay ICU patients.

Future research looking at the efficacy of bridle kits in larger patient groups will help confirm the benefits seen in this study and will also provide better information with regard to any long-term complications associated with bridles.

Corresponding author: Rajveer Atkar, MBBS, Queen Elizabeth Hospital Birmingham, Mindelsohn Way, Birmingham B15 2GW, United Kingdom; [email protected].

Financial disclosures: None.

References

1. Intensive Care National Audit & Research Centre. ICNARC report on COVID-19 in critical care 15 May 2020. https://www.icnarc.org/DataServices/Attachments/Download/cbcb6217-f698-ea11-9125-00505601089b

2. NHS. Nasogastric tube misplacement: continuing risk of death and severe harm. July 22, 2016. https://www.england.nhs.uk/2016/07/nasogastric-tube-misplacement-continuing-risk-of-death-severe-harm/

3. NHS. Provisional publication of never events reported as occurring between 1 April and 30 June 2020. https://www.england.nhs.uk/wp-content/uploads/2020/08/Provisional_publication_-_NE_1_April_-_30_June_2020.pdf

4. Meer JA. Inadvertent dislodgement of nasoenteral feeding tubes: incidence and prevention. JPEN J Parenter Enteral Nutr. 1987;11(2):187- 189. doi:10.1177/0148607187011002187

5. Bechtold ML, Nguyen DL, Palmer L, et al. Nasal bridles for securing nasoenteric tubes: a meta-analysis. Nutr Clin Pract. 2014;29(5):667-671. doi:10.1177/0884533614536737

6. Lynch A, Tang CS, Jeganathan LS, Rockey JG. A systematic review of the effectiveness and complications of using nasal bridles to secure nasoenteral feeding tubes. Aust J Otolaryngol. 2018;1:8. doi:10.21037/ajo.2018.01.01

7. Johnston R, O’Dell L, Patrick M, Cole OT, Cunliffe N. Outcome of patients fed via a nasogastric tube retained with a bridle loop: Do bridle loops reduce the requirement for percutaneous endoscopic gastrostomy insertion and 30-day mortality? Proc Nutr Soc. 2008;67:E116. doi:10.1017/S0029665108007489

8. Li AY, Rustad KC, Long C, et al. Reduced incidence of feeding tube dislodgement and missed feeds in burn patients with nasal bridle securement. Burns. 2018;44(5):1203-1209. doi:10.1016/j.burns.2017.05.025

9. Peev MP, Yeh DD, Quraishi SA, et al. Causes and consequences of interrupted enteral nutrition: a prospective observational study in critically ill surgical patients. JPEN J Parenter Enteral Nutr. 2015;39(1):21-27. doi:10.1177/0148607114526887

10. Seder CW, Janczyk R. The routine bridling of nasjejunal tubes is a safe and effective method of reducing dislodgement in the intensive care unit. Nutr Clin Pract. 2008;23(6):651-654. doi:10.1177/0148607114526887

11. Dechartres A, Boutron I, Trinquart L, Charles P, Ravaud P. Single-center trials show larger treatment effects than multicenter trials: evidence from a meta-epidemiologic study. Ann Intern Med. 2011;155:39-51. doi:10.7326/0003-4819-155-1-201107050-00006

12. Morton B, Hall R, Ridgway T, Al-Rawi O. Nasogastric tube dislodgement: a problem on our ICU. Crit Care. 2013;17(suppl 2):P242. doi:10.1186/cc12180

References

1. Intensive Care National Audit & Research Centre. ICNARC report on COVID-19 in critical care 15 May 2020. https://www.icnarc.org/DataServices/Attachments/Download/cbcb6217-f698-ea11-9125-00505601089b

2. NHS. Nasogastric tube misplacement: continuing risk of death and severe harm. July 22, 2016. https://www.england.nhs.uk/2016/07/nasogastric-tube-misplacement-continuing-risk-of-death-severe-harm/

3. NHS. Provisional publication of never events reported as occurring between 1 April and 30 June 2020. https://www.england.nhs.uk/wp-content/uploads/2020/08/Provisional_publication_-_NE_1_April_-_30_June_2020.pdf

4. Meer JA. Inadvertent dislodgement of nasoenteral feeding tubes: incidence and prevention. JPEN J Parenter Enteral Nutr. 1987;11(2):187- 189. doi:10.1177/0148607187011002187

5. Bechtold ML, Nguyen DL, Palmer L, et al. Nasal bridles for securing nasoenteric tubes: a meta-analysis. Nutr Clin Pract. 2014;29(5):667-671. doi:10.1177/0884533614536737

6. Lynch A, Tang CS, Jeganathan LS, Rockey JG. A systematic review of the effectiveness and complications of using nasal bridles to secure nasoenteral feeding tubes. Aust J Otolaryngol. 2018;1:8. doi:10.21037/ajo.2018.01.01

7. Johnston R, O’Dell L, Patrick M, Cole OT, Cunliffe N. Outcome of patients fed via a nasogastric tube retained with a bridle loop: Do bridle loops reduce the requirement for percutaneous endoscopic gastrostomy insertion and 30-day mortality? Proc Nutr Soc. 2008;67:E116. doi:10.1017/S0029665108007489

8. Li AY, Rustad KC, Long C, et al. Reduced incidence of feeding tube dislodgement and missed feeds in burn patients with nasal bridle securement. Burns. 2018;44(5):1203-1209. doi:10.1016/j.burns.2017.05.025

9. Peev MP, Yeh DD, Quraishi SA, et al. Causes and consequences of interrupted enteral nutrition: a prospective observational study in critically ill surgical patients. JPEN J Parenter Enteral Nutr. 2015;39(1):21-27. doi:10.1177/0148607114526887

10. Seder CW, Janczyk R. The routine bridling of nasjejunal tubes is a safe and effective method of reducing dislodgement in the intensive care unit. Nutr Clin Pract. 2008;23(6):651-654. doi:10.1177/0148607114526887

11. Dechartres A, Boutron I, Trinquart L, Charles P, Ravaud P. Single-center trials show larger treatment effects than multicenter trials: evidence from a meta-epidemiologic study. Ann Intern Med. 2011;155:39-51. doi:10.7326/0003-4819-155-1-201107050-00006

12. Morton B, Hall R, Ridgway T, Al-Rawi O. Nasogastric tube dislodgement: a problem on our ICU. Crit Care. 2013;17(suppl 2):P242. doi:10.1186/cc12180

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