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COVID-19 transforms medical education: No ‘back to normal’
The COVID-19 pandemic has thrown a monkey wrench into the medical education landscape across the entire health care spectrum, disrupting the plans of medical students, residents, fellows, and program directors.
As cases of COVID-19 spread across the United States in early 2020, it became clear to training program directors that immediate action was required to meet the needs of medical learners. The challenges were unlike those surrounding the Ebola virus in 2014, “where we could more easily prevent students and trainees from exposure due to the fact that there were simply not significant numbers of cases in the United States,” Tiffany Murano, MD, said at a Society for Critical Care virtual meeting: COVID-19: What’s Next. Dr. Murano is professor of emergency medicine at Rutgers New Jersey Medical School, Newark, and president-elect of the Council of Residency Directors in Emergency Medicine. “COVID was a completely different scenario. We quickly realized that not only was personal protective equipment in short supply, but we also lacked the testing and tracking capabilities for potential exposures. Medical students and other supportive workers who were considered nonessential were removed from the clinical setting. This was after a trial of limiting who the students saw, essentially dampening the risk of exposure. But this proved to be flawed as COVID patients presented with symptoms that were unexpected.”
To complicate matters, she continued, many medical clinics either shut down, had limited access, or converted to telemedicine. Elective surgeries were canceled. This led to an overall pause in clinical medical student rotations and no direct patient care activities. As social distancing mandates were instituted, licensing examination testing centers were closed, and exams and on-campus activities were postponed.
Limiting trainee exposure
On the graduate medical education front, some training programs attempted to limit exposure of their trainees to persons under investigation for COVID-19. “As the number of COVID cases grew and encompassed most of what we were seeing in the hospital, it was obvious that residents had to play a vital part in the care of these patients,” said Dr. Murano, who is also a member of the American Council of Graduate Medical Education’s emergency review and recognition committee. “However, there was a consensus among all of the specialties that the procedures that posed the highest risk of exposure would be limited to the most senior or experienced trainees or professionals, and closely supervised by the faculty.”
ACGME activities such as accreditation site visits, clinical environment learning reviews, self-study, and resident and faculty surveys were suspended, postponed, or modified in some way, she said. The ACGME created stages of COVID status to guide sponsoring institutions to suspend learning curricula in order for patients to be cared for. Stage 1 was business as usual, “so there was no significant impact on patient care,” Dr. Murano said. “Stage 2 was increased but manageable clinical demand, while stage 3 was pandemic emergency status, where there were extraordinary circumstances where the clinical demand was so high and strenuous that the routine patient care and education really needed to be reconfigured in order to care for the patients.”
New requirements to manage training
The ACGME also implemented four requirements to manage training that were consistent among institutions, regardless of their COVID stage status. These included making sure that trainees continued to be held to work-hour limit requirements, ensuring adequate resources for training, ensuring that all residents had the appropriate level of supervision at all times, and allowing fellows to function in the core specialty in which they completed their residency training. “This was only possible if the fellows were ABMS [American Board of Medical Specialties] or AOA [American Osteopathic Association] board-eligible, or certified in their core specialty,” Dr. Murano said. “The fellows had to be appointed to the medical staff at the sponsoring institution, and their time spent on the core specialty service would be limited to 20% of their annual education time in any academic year.”
Mindful that there may have been trainees who required a 2-week quarantine period following exposure or potential exposure to COVID-19, some specialty boards showed leniency in residency time required to sit for the written exam. “Testing centers were being forced to close to observe social distancing requirements and heed sanitation recommendations, so exams were either canceled or postponed,” Dr. Murano said. “This posed a special concern for the board certification process, and those specialties with oral examinations had to make a heavy decision regarding whether or not they would allow these exams to take place. Naturally, travel among institutions was suspended or limited, or had quarantine requirements upon returning home from endemic areas. Conferences were either being canceled or converted to virtual formats.”
Subani Chandra, MD, FCCP, of the division of pulmonary, allergy, and critical care medicine at Columbia University, New York, is the internal medicine residency program director and the associate vice-chair of education for the department of medicine, and she recognized the problem created for medical trainees by the changes necessitated by the pandemic.
“The variability in caseloads and clinical exposure has given thrust to the move toward competency-based assessments rather than number- or time-based criteria for determining proficiency and graduation,” she wrote in an email interview. In addition, she noted the impact on medical meetings and the need to adapt. “Early on, before large regional and national conferences adapted to a virtual format, many were canceled altogether. Students, residents, and fellows expecting to have the opportunity to present their scholarly work were suddenly no longer able to do so. Understanding the importance of scholarly interaction, the virtual format of CHEST 2020 is designed with opportunities to present, interact with experts in the field, ask questions, network, and meet mentors.”
No return to ‘normal’
By April 2020, cases in the northeast continued to rise, particularly in the New York, New Jersey, and Connecticut region. “These states were essentially shut down in order to contain spread of the virus,” she said. “This was a real turning point because we realized that things were not going to return to ‘normal’ in the foreseeable future.” With the clinical experience essentially halted for medical students during this time, some medical schools allowed their senior students who met requirements to graduate early. “There were a lot of mixed feelings about this, recognizing that PPE [personal protective equipment] was still in short supply in many areas,” Dr. Murano said. “So, institutions took on these early graduates into roles in which they were not learners in particular, but rather medical workers. They were helping with informatics and technology, telehealth, virtual or telephone call follow-ups, and other tasks like this. There was a movement to virtual learning for the preclinical undergraduate learners, so classes were now online, recorded, or livestreamed.”
Early graduation, matching, and residencies
On April 3, the ACGME released a statement regarding graduating students early and appointing them early to the clinical learning environment. “They pointed out that institutions that were in emergency pandemic status lacked the ability to offer the comprehensive orientation and training in PPE and direct supervision required for new residents at the start of their residency,” Dr. Murano said. “Their opinion maintained that graduating medical students matriculate in their previously matched program, the National Resident Match Program start date, or other date that would be nationally determined to be the beginning of the 2020-2021 academic year.”
As May 2020 rolled around, the overriding feeling was uncertainty regarding when, if, and how medical schools were going to open in the early summer and fall. “There was also uncertainty about how graduating medical students were going to function in their new role as residents,” she said. “Same for the graduating residents. There were some who had signed contracts for jobs months before, and had them rescinded, and physicians were being furloughed due to financial hardships that institutions faced. There was also postponement of board certification exams, so people were uncertain about when they would become board certified.”
July 2020 ushered in what Dr. Murano characterized as “a whole new level of stress.” For medical students in particular, “we were entering the application season for residency positions,” she said. “Due to travel restrictions placed by various states and institutions, away rotations were limited or nonexistent. Application release dates through the Electronic Residency Application Service were moved to later in the year. The United States Medical Licensing Examination clinical skills exam was suspended, and there were modifications made for Education Commission for Foreign Medical Graduates requirements. Letters of recommendation were also going to be limited, so there had to be some degree of leniency within specialties to take a more holistic approach to review of applications for residencies.”
On the graduate medical education front, the ACGME sunsetted the initial stages and created two categories: nonemergency, which was formerly stages 1 and 2, and emergency, which was formerly stage 3. “All emergency stages are applied for and granted at 1-month intervals,” Dr. Murano said. Board certification exams were modified to accommodate either later exams or online formats, and specialties with oral examinations faced the task of potentially creating virtual oral exams.
Despite the challenges, Dr. Chandra has seen medical training programs respond with new ideas. “The flexibility and agile adaptability of the entire educational enterprise has been remarkable. The inherent uncertainty in a very dynamic and changing learning environment can be challenging. Recognizing this, many programs are creating additional ways to support the mental, emotional, physical, and financial health of students, residents, and fellows and all health care workers. The importance of this innovative response cannot be overstated.”
New learning formats
The pandemic forced Dr. Murano and other medical educators to consider unorthodox learning formats, and virtual learning took center stage. “Residency programs had shared national livestream conferences and grand rounds, and there were virtual curricula made for medical students as well as virtual simulation,” she said. “Telemedicine and telehealth really became important parts of education as well, as this may have been the only face-to-face contact that students and residents had with patients who had non–COVID-related complaints.”
To level the playing field for medical residents during this unprecedented time, a work group of the Coalition for Physician Accountability developed a set of recommendations that include limiting the number of letters of recommendation accepted, limiting the number of away rotations, and allowing alternative or less conventional letters of recommendation. “Keeping an open mind and taking a more holistic approach to applicants has really been needed during this time,” Dr. Murano said. “Virtual interview days have been agreed upon for all specialties. They’re safer, and they allow for students to virtually meet faculty and residents from distant programs that in the past would have been a deterrent due to distance and travel costs. This is not without its own downside, as it’s difficult to determine how well a student will fit into a program without [him or her] actually visiting the institution.”
Dr. Chandra agreed that virtual interviews are necessary but have inherent limitations. However, “we will all learn a lot, and very likely the future process will blend the benefits of both virtual and in-person interviews.”
‘We need to keep moving forward’
Dr. Murano concluded her presentation by noting that the COVID-19 pandemic has created opportunities for growth and innovation in medical education, “so we need to keep moving forward. I’ve heard many say that they can’t wait for things to go back to normal. But I think it’s important to go ahead to new and better ways of learning. We’re now thinking outside of the typical education model and are embracing technology and alternative means of education. We don’t know yet if this education is better, worse, or equivalent to traditional methods, but that will be determined and studied in months and years to come, so we’re certainly looking to the future.”
Dr. Murano and Dr. Chandra reported having no financial disclosures.
The COVID-19 pandemic has thrown a monkey wrench into the medical education landscape across the entire health care spectrum, disrupting the plans of medical students, residents, fellows, and program directors.
As cases of COVID-19 spread across the United States in early 2020, it became clear to training program directors that immediate action was required to meet the needs of medical learners. The challenges were unlike those surrounding the Ebola virus in 2014, “where we could more easily prevent students and trainees from exposure due to the fact that there were simply not significant numbers of cases in the United States,” Tiffany Murano, MD, said at a Society for Critical Care virtual meeting: COVID-19: What’s Next. Dr. Murano is professor of emergency medicine at Rutgers New Jersey Medical School, Newark, and president-elect of the Council of Residency Directors in Emergency Medicine. “COVID was a completely different scenario. We quickly realized that not only was personal protective equipment in short supply, but we also lacked the testing and tracking capabilities for potential exposures. Medical students and other supportive workers who were considered nonessential were removed from the clinical setting. This was after a trial of limiting who the students saw, essentially dampening the risk of exposure. But this proved to be flawed as COVID patients presented with symptoms that were unexpected.”
To complicate matters, she continued, many medical clinics either shut down, had limited access, or converted to telemedicine. Elective surgeries were canceled. This led to an overall pause in clinical medical student rotations and no direct patient care activities. As social distancing mandates were instituted, licensing examination testing centers were closed, and exams and on-campus activities were postponed.
Limiting trainee exposure
On the graduate medical education front, some training programs attempted to limit exposure of their trainees to persons under investigation for COVID-19. “As the number of COVID cases grew and encompassed most of what we were seeing in the hospital, it was obvious that residents had to play a vital part in the care of these patients,” said Dr. Murano, who is also a member of the American Council of Graduate Medical Education’s emergency review and recognition committee. “However, there was a consensus among all of the specialties that the procedures that posed the highest risk of exposure would be limited to the most senior or experienced trainees or professionals, and closely supervised by the faculty.”
ACGME activities such as accreditation site visits, clinical environment learning reviews, self-study, and resident and faculty surveys were suspended, postponed, or modified in some way, she said. The ACGME created stages of COVID status to guide sponsoring institutions to suspend learning curricula in order for patients to be cared for. Stage 1 was business as usual, “so there was no significant impact on patient care,” Dr. Murano said. “Stage 2 was increased but manageable clinical demand, while stage 3 was pandemic emergency status, where there were extraordinary circumstances where the clinical demand was so high and strenuous that the routine patient care and education really needed to be reconfigured in order to care for the patients.”
New requirements to manage training
The ACGME also implemented four requirements to manage training that were consistent among institutions, regardless of their COVID stage status. These included making sure that trainees continued to be held to work-hour limit requirements, ensuring adequate resources for training, ensuring that all residents had the appropriate level of supervision at all times, and allowing fellows to function in the core specialty in which they completed their residency training. “This was only possible if the fellows were ABMS [American Board of Medical Specialties] or AOA [American Osteopathic Association] board-eligible, or certified in their core specialty,” Dr. Murano said. “The fellows had to be appointed to the medical staff at the sponsoring institution, and their time spent on the core specialty service would be limited to 20% of their annual education time in any academic year.”
Mindful that there may have been trainees who required a 2-week quarantine period following exposure or potential exposure to COVID-19, some specialty boards showed leniency in residency time required to sit for the written exam. “Testing centers were being forced to close to observe social distancing requirements and heed sanitation recommendations, so exams were either canceled or postponed,” Dr. Murano said. “This posed a special concern for the board certification process, and those specialties with oral examinations had to make a heavy decision regarding whether or not they would allow these exams to take place. Naturally, travel among institutions was suspended or limited, or had quarantine requirements upon returning home from endemic areas. Conferences were either being canceled or converted to virtual formats.”
Subani Chandra, MD, FCCP, of the division of pulmonary, allergy, and critical care medicine at Columbia University, New York, is the internal medicine residency program director and the associate vice-chair of education for the department of medicine, and she recognized the problem created for medical trainees by the changes necessitated by the pandemic.
“The variability in caseloads and clinical exposure has given thrust to the move toward competency-based assessments rather than number- or time-based criteria for determining proficiency and graduation,” she wrote in an email interview. In addition, she noted the impact on medical meetings and the need to adapt. “Early on, before large regional and national conferences adapted to a virtual format, many were canceled altogether. Students, residents, and fellows expecting to have the opportunity to present their scholarly work were suddenly no longer able to do so. Understanding the importance of scholarly interaction, the virtual format of CHEST 2020 is designed with opportunities to present, interact with experts in the field, ask questions, network, and meet mentors.”
No return to ‘normal’
By April 2020, cases in the northeast continued to rise, particularly in the New York, New Jersey, and Connecticut region. “These states were essentially shut down in order to contain spread of the virus,” she said. “This was a real turning point because we realized that things were not going to return to ‘normal’ in the foreseeable future.” With the clinical experience essentially halted for medical students during this time, some medical schools allowed their senior students who met requirements to graduate early. “There were a lot of mixed feelings about this, recognizing that PPE [personal protective equipment] was still in short supply in many areas,” Dr. Murano said. “So, institutions took on these early graduates into roles in which they were not learners in particular, but rather medical workers. They were helping with informatics and technology, telehealth, virtual or telephone call follow-ups, and other tasks like this. There was a movement to virtual learning for the preclinical undergraduate learners, so classes were now online, recorded, or livestreamed.”
Early graduation, matching, and residencies
On April 3, the ACGME released a statement regarding graduating students early and appointing them early to the clinical learning environment. “They pointed out that institutions that were in emergency pandemic status lacked the ability to offer the comprehensive orientation and training in PPE and direct supervision required for new residents at the start of their residency,” Dr. Murano said. “Their opinion maintained that graduating medical students matriculate in their previously matched program, the National Resident Match Program start date, or other date that would be nationally determined to be the beginning of the 2020-2021 academic year.”
As May 2020 rolled around, the overriding feeling was uncertainty regarding when, if, and how medical schools were going to open in the early summer and fall. “There was also uncertainty about how graduating medical students were going to function in their new role as residents,” she said. “Same for the graduating residents. There were some who had signed contracts for jobs months before, and had them rescinded, and physicians were being furloughed due to financial hardships that institutions faced. There was also postponement of board certification exams, so people were uncertain about when they would become board certified.”
July 2020 ushered in what Dr. Murano characterized as “a whole new level of stress.” For medical students in particular, “we were entering the application season for residency positions,” she said. “Due to travel restrictions placed by various states and institutions, away rotations were limited or nonexistent. Application release dates through the Electronic Residency Application Service were moved to later in the year. The United States Medical Licensing Examination clinical skills exam was suspended, and there were modifications made for Education Commission for Foreign Medical Graduates requirements. Letters of recommendation were also going to be limited, so there had to be some degree of leniency within specialties to take a more holistic approach to review of applications for residencies.”
On the graduate medical education front, the ACGME sunsetted the initial stages and created two categories: nonemergency, which was formerly stages 1 and 2, and emergency, which was formerly stage 3. “All emergency stages are applied for and granted at 1-month intervals,” Dr. Murano said. Board certification exams were modified to accommodate either later exams or online formats, and specialties with oral examinations faced the task of potentially creating virtual oral exams.
Despite the challenges, Dr. Chandra has seen medical training programs respond with new ideas. “The flexibility and agile adaptability of the entire educational enterprise has been remarkable. The inherent uncertainty in a very dynamic and changing learning environment can be challenging. Recognizing this, many programs are creating additional ways to support the mental, emotional, physical, and financial health of students, residents, and fellows and all health care workers. The importance of this innovative response cannot be overstated.”
New learning formats
The pandemic forced Dr. Murano and other medical educators to consider unorthodox learning formats, and virtual learning took center stage. “Residency programs had shared national livestream conferences and grand rounds, and there were virtual curricula made for medical students as well as virtual simulation,” she said. “Telemedicine and telehealth really became important parts of education as well, as this may have been the only face-to-face contact that students and residents had with patients who had non–COVID-related complaints.”
To level the playing field for medical residents during this unprecedented time, a work group of the Coalition for Physician Accountability developed a set of recommendations that include limiting the number of letters of recommendation accepted, limiting the number of away rotations, and allowing alternative or less conventional letters of recommendation. “Keeping an open mind and taking a more holistic approach to applicants has really been needed during this time,” Dr. Murano said. “Virtual interview days have been agreed upon for all specialties. They’re safer, and they allow for students to virtually meet faculty and residents from distant programs that in the past would have been a deterrent due to distance and travel costs. This is not without its own downside, as it’s difficult to determine how well a student will fit into a program without [him or her] actually visiting the institution.”
Dr. Chandra agreed that virtual interviews are necessary but have inherent limitations. However, “we will all learn a lot, and very likely the future process will blend the benefits of both virtual and in-person interviews.”
‘We need to keep moving forward’
Dr. Murano concluded her presentation by noting that the COVID-19 pandemic has created opportunities for growth and innovation in medical education, “so we need to keep moving forward. I’ve heard many say that they can’t wait for things to go back to normal. But I think it’s important to go ahead to new and better ways of learning. We’re now thinking outside of the typical education model and are embracing technology and alternative means of education. We don’t know yet if this education is better, worse, or equivalent to traditional methods, but that will be determined and studied in months and years to come, so we’re certainly looking to the future.”
Dr. Murano and Dr. Chandra reported having no financial disclosures.
The COVID-19 pandemic has thrown a monkey wrench into the medical education landscape across the entire health care spectrum, disrupting the plans of medical students, residents, fellows, and program directors.
As cases of COVID-19 spread across the United States in early 2020, it became clear to training program directors that immediate action was required to meet the needs of medical learners. The challenges were unlike those surrounding the Ebola virus in 2014, “where we could more easily prevent students and trainees from exposure due to the fact that there were simply not significant numbers of cases in the United States,” Tiffany Murano, MD, said at a Society for Critical Care virtual meeting: COVID-19: What’s Next. Dr. Murano is professor of emergency medicine at Rutgers New Jersey Medical School, Newark, and president-elect of the Council of Residency Directors in Emergency Medicine. “COVID was a completely different scenario. We quickly realized that not only was personal protective equipment in short supply, but we also lacked the testing and tracking capabilities for potential exposures. Medical students and other supportive workers who were considered nonessential were removed from the clinical setting. This was after a trial of limiting who the students saw, essentially dampening the risk of exposure. But this proved to be flawed as COVID patients presented with symptoms that were unexpected.”
To complicate matters, she continued, many medical clinics either shut down, had limited access, or converted to telemedicine. Elective surgeries were canceled. This led to an overall pause in clinical medical student rotations and no direct patient care activities. As social distancing mandates were instituted, licensing examination testing centers were closed, and exams and on-campus activities were postponed.
Limiting trainee exposure
On the graduate medical education front, some training programs attempted to limit exposure of their trainees to persons under investigation for COVID-19. “As the number of COVID cases grew and encompassed most of what we were seeing in the hospital, it was obvious that residents had to play a vital part in the care of these patients,” said Dr. Murano, who is also a member of the American Council of Graduate Medical Education’s emergency review and recognition committee. “However, there was a consensus among all of the specialties that the procedures that posed the highest risk of exposure would be limited to the most senior or experienced trainees or professionals, and closely supervised by the faculty.”
ACGME activities such as accreditation site visits, clinical environment learning reviews, self-study, and resident and faculty surveys were suspended, postponed, or modified in some way, she said. The ACGME created stages of COVID status to guide sponsoring institutions to suspend learning curricula in order for patients to be cared for. Stage 1 was business as usual, “so there was no significant impact on patient care,” Dr. Murano said. “Stage 2 was increased but manageable clinical demand, while stage 3 was pandemic emergency status, where there were extraordinary circumstances where the clinical demand was so high and strenuous that the routine patient care and education really needed to be reconfigured in order to care for the patients.”
New requirements to manage training
The ACGME also implemented four requirements to manage training that were consistent among institutions, regardless of their COVID stage status. These included making sure that trainees continued to be held to work-hour limit requirements, ensuring adequate resources for training, ensuring that all residents had the appropriate level of supervision at all times, and allowing fellows to function in the core specialty in which they completed their residency training. “This was only possible if the fellows were ABMS [American Board of Medical Specialties] or AOA [American Osteopathic Association] board-eligible, or certified in their core specialty,” Dr. Murano said. “The fellows had to be appointed to the medical staff at the sponsoring institution, and their time spent on the core specialty service would be limited to 20% of their annual education time in any academic year.”
Mindful that there may have been trainees who required a 2-week quarantine period following exposure or potential exposure to COVID-19, some specialty boards showed leniency in residency time required to sit for the written exam. “Testing centers were being forced to close to observe social distancing requirements and heed sanitation recommendations, so exams were either canceled or postponed,” Dr. Murano said. “This posed a special concern for the board certification process, and those specialties with oral examinations had to make a heavy decision regarding whether or not they would allow these exams to take place. Naturally, travel among institutions was suspended or limited, or had quarantine requirements upon returning home from endemic areas. Conferences were either being canceled or converted to virtual formats.”
Subani Chandra, MD, FCCP, of the division of pulmonary, allergy, and critical care medicine at Columbia University, New York, is the internal medicine residency program director and the associate vice-chair of education for the department of medicine, and she recognized the problem created for medical trainees by the changes necessitated by the pandemic.
“The variability in caseloads and clinical exposure has given thrust to the move toward competency-based assessments rather than number- or time-based criteria for determining proficiency and graduation,” she wrote in an email interview. In addition, she noted the impact on medical meetings and the need to adapt. “Early on, before large regional and national conferences adapted to a virtual format, many were canceled altogether. Students, residents, and fellows expecting to have the opportunity to present their scholarly work were suddenly no longer able to do so. Understanding the importance of scholarly interaction, the virtual format of CHEST 2020 is designed with opportunities to present, interact with experts in the field, ask questions, network, and meet mentors.”
No return to ‘normal’
By April 2020, cases in the northeast continued to rise, particularly in the New York, New Jersey, and Connecticut region. “These states were essentially shut down in order to contain spread of the virus,” she said. “This was a real turning point because we realized that things were not going to return to ‘normal’ in the foreseeable future.” With the clinical experience essentially halted for medical students during this time, some medical schools allowed their senior students who met requirements to graduate early. “There were a lot of mixed feelings about this, recognizing that PPE [personal protective equipment] was still in short supply in many areas,” Dr. Murano said. “So, institutions took on these early graduates into roles in which they were not learners in particular, but rather medical workers. They were helping with informatics and technology, telehealth, virtual or telephone call follow-ups, and other tasks like this. There was a movement to virtual learning for the preclinical undergraduate learners, so classes were now online, recorded, or livestreamed.”
Early graduation, matching, and residencies
On April 3, the ACGME released a statement regarding graduating students early and appointing them early to the clinical learning environment. “They pointed out that institutions that were in emergency pandemic status lacked the ability to offer the comprehensive orientation and training in PPE and direct supervision required for new residents at the start of their residency,” Dr. Murano said. “Their opinion maintained that graduating medical students matriculate in their previously matched program, the National Resident Match Program start date, or other date that would be nationally determined to be the beginning of the 2020-2021 academic year.”
As May 2020 rolled around, the overriding feeling was uncertainty regarding when, if, and how medical schools were going to open in the early summer and fall. “There was also uncertainty about how graduating medical students were going to function in their new role as residents,” she said. “Same for the graduating residents. There were some who had signed contracts for jobs months before, and had them rescinded, and physicians were being furloughed due to financial hardships that institutions faced. There was also postponement of board certification exams, so people were uncertain about when they would become board certified.”
July 2020 ushered in what Dr. Murano characterized as “a whole new level of stress.” For medical students in particular, “we were entering the application season for residency positions,” she said. “Due to travel restrictions placed by various states and institutions, away rotations were limited or nonexistent. Application release dates through the Electronic Residency Application Service were moved to later in the year. The United States Medical Licensing Examination clinical skills exam was suspended, and there were modifications made for Education Commission for Foreign Medical Graduates requirements. Letters of recommendation were also going to be limited, so there had to be some degree of leniency within specialties to take a more holistic approach to review of applications for residencies.”
On the graduate medical education front, the ACGME sunsetted the initial stages and created two categories: nonemergency, which was formerly stages 1 and 2, and emergency, which was formerly stage 3. “All emergency stages are applied for and granted at 1-month intervals,” Dr. Murano said. Board certification exams were modified to accommodate either later exams or online formats, and specialties with oral examinations faced the task of potentially creating virtual oral exams.
Despite the challenges, Dr. Chandra has seen medical training programs respond with new ideas. “The flexibility and agile adaptability of the entire educational enterprise has been remarkable. The inherent uncertainty in a very dynamic and changing learning environment can be challenging. Recognizing this, many programs are creating additional ways to support the mental, emotional, physical, and financial health of students, residents, and fellows and all health care workers. The importance of this innovative response cannot be overstated.”
New learning formats
The pandemic forced Dr. Murano and other medical educators to consider unorthodox learning formats, and virtual learning took center stage. “Residency programs had shared national livestream conferences and grand rounds, and there were virtual curricula made for medical students as well as virtual simulation,” she said. “Telemedicine and telehealth really became important parts of education as well, as this may have been the only face-to-face contact that students and residents had with patients who had non–COVID-related complaints.”
To level the playing field for medical residents during this unprecedented time, a work group of the Coalition for Physician Accountability developed a set of recommendations that include limiting the number of letters of recommendation accepted, limiting the number of away rotations, and allowing alternative or less conventional letters of recommendation. “Keeping an open mind and taking a more holistic approach to applicants has really been needed during this time,” Dr. Murano said. “Virtual interview days have been agreed upon for all specialties. They’re safer, and they allow for students to virtually meet faculty and residents from distant programs that in the past would have been a deterrent due to distance and travel costs. This is not without its own downside, as it’s difficult to determine how well a student will fit into a program without [him or her] actually visiting the institution.”
Dr. Chandra agreed that virtual interviews are necessary but have inherent limitations. However, “we will all learn a lot, and very likely the future process will blend the benefits of both virtual and in-person interviews.”
‘We need to keep moving forward’
Dr. Murano concluded her presentation by noting that the COVID-19 pandemic has created opportunities for growth and innovation in medical education, “so we need to keep moving forward. I’ve heard many say that they can’t wait for things to go back to normal. But I think it’s important to go ahead to new and better ways of learning. We’re now thinking outside of the typical education model and are embracing technology and alternative means of education. We don’t know yet if this education is better, worse, or equivalent to traditional methods, but that will be determined and studied in months and years to come, so we’re certainly looking to the future.”
Dr. Murano and Dr. Chandra reported having no financial disclosures.
FROM AN SCCM VIRTUAL MEETING
Optimal sedation strategies for COVID-19 ICU patients: A work in progress
According to the best available evidence, analagosedation remains the focus for managing COVID-19 ICU patients, according to Steven B. Greenberg, MD, FCCP, FCCM.
“The choice of sedation and analgesia is important,” Dr. Greenberg, vice chair of education in the department of anesthesiology at Evanston Hospital, part of NorthShore University Health System, Chicago, said at a Society for Critical Care virtual meeting: COVID-19: What’s Next. “We know that the right choice of these two components may increase liberation from ventilators, earlier ICU discharge, and return to normal brain function and independent functional status.”
Analgesia first
Prior to the current pandemic, the approach to sedation of patients in the ICU was based on the PADIS Guidelines of 2018, which call for an assessment-driven, protocol-based stepwise approach to pain and sedation management in critically ill adults (Crit Care Med. 2018;46:e825-73). “” Dr. Greenberg said. “We know that pain management should be a priority of sedation, because pain may increase the risk of delirium, anxiety, and endocrine suppression, and may increase the risk of release of endogenous catecholamines, ischemia, and hypermetabolic states.”
Fentanyl appears to be the most common opioid analgesic used for patients in the ICU, “but fentanyl is a very lipophilic drug and has a long context-sensitive half-life,” he said. “There are components to fentanyl that allow it to become a very long-acting drug upon days and days of infusion. Another opioid used is remifentanil, which is typically short-acting because it is broken down in the blood by esterases, but may cause rigidity at higher doses. Dilaudid seems to be the least affected by organ dysfunction. In our very critically ill, prolonged mechanically ventilated COVID-19 patients, we’ve been using methadone for its NMDA [N-methyl-D-aspartate] antagonistic effect and its opioid-sparing effects.”
As for nonopioid analgesics, Dr. Greenberg said that clinicians have shied away from using NSAIDs because of their side effects. “Tramadol indirectly inhibits reuptake of norepinephrine and serotonin, and ketamine is being used a lot more because of its NMDA antagonist effect,” he said. “Lidocaine and gabapentin have also been used.”
In a recent systematic review and meta-analysis, researchers assessed 34 trials that examined adjuvant analgesic use with an opioid in critically ill patients versus an opioid alone (Crit Care Expl. 2020;2:e0157). They found that when using an adjuvant such as acetaminophen, clonidine, dexmedetomidine, gabapentin, ketamine, magnesium, nefopam, NSAIDs, pregabalin, and tramadol, there was a reduction in pain scores as well as a reduction in opioid consumption. “So, clinicians should consider using adjuvant agents to limit opioid exposure and improve pain scores in the critically ill,” Dr. Greenberg said.
ICU delirium: Risk factors, prevention
Delirium in COVID-19 patients treated in the ICU of particular concern. According to a systematic review of 33 studies, 11 risk factors for delirium in the ICU were supported by strong or moderate levels of evidence (Crit Care Med. 2015;43:40-7). These include age, dementia, hypertension, emergency surgery, trauma, APACHE score of II, need for mechanical ventilation, metabolic acidosis, delirium on prior day, coma, and dexmedetomidine use. Risk factors for ICU delirium among COVID-19 patients, however, “are far different,” Dr. Greenberg said. “Why? First and foremost, we are restricting visitation of family,” he said. “That family connection largely can be lost. Second, there are limitations of nonpharmacologic interventions. There is less mobility and physical therapy employed because of the risk of health care workers’ exposure to the virus. There’s also uncertainty about the global pandemic. Anxiety and depression come with that, as well as disruptions to spiritual and religious services.”
Strategies for preventing delirium remain the same as before the pandemic and in accord with recent clinical practice guidelines: Reduce the use of certain drugs such as benzodiazepines and narcotics, reorient the patients, treat dehydration, use hearing aids and eyeglasses in patients who have them, use ear plugs to cancel noise, mobilize patients, maintain sleep/awake cycles, and encourage sedation holidays (Crit Care Med. 2018;46[9]:e825-73).
A recent study from France found that among 58 patients with COVID-19, 65% had positive Confusion Assessment Method (CAM)–ICU findings and 69% had agitation (N Engl J Med 2020;382:2268-70). Most of the patients (86%) received midazolam, 47% received propofol, and all received sufentanil. “In the pre-COVID days, we would use midazolam as a second-line agent for many of these patients,” Dr. Greenberg said. “So, times really have changed.”
The fate of COVID-19 patients following discharge from the ICU remains a concern, continued Dr. Greenberg, clinical professor of anesthesiology at the University of Chicago. A recent journal article by Michelle Biehl, MD, and Denise Sese, MD, noted that post–intensive care syndrome (PICS) or new or worsening impairment in any physical, cognitive, or mental domain is of significant concern among COVID-19 patients following their ICU stay (Cleveland Clin J Med 2020 Aug doi: 10.3949/ccjm.87a.ccc055). The authors stated that COVID-19 patients may face a higher risk of PICS because of restricted family visitation, prolonged mechanical ventilation, exposure to higher amounts of sedatives, and limited physical therapy during hospital stay.
No ideal sedative agent
The 2018 PADIS Guidelines on the use of ICU sedation suggested strong evidence for modifiable risk factors producing delirium in the context of benzodiazepines and blood transfusion. They recommend a light level of sedation and the use of propofol or dexmedetomidine over benzodiazepines. They also recommend routine delirium testing such as using the CAM-ICU or Intensive Care Delirium Screening Checklist (ICDSC) and nonpharmacologic therapies such as reorientation, cognitive stimulation, sleep improvement, and mobilization.
Several sedation-related factors may be related to an increased risk of delirium. “The type, dose, duration, and mode of delivery are very important,” Dr. Greenberg said. “The ideal sedative agent has a rapid, predictable onset; is short-acting; has anxiolytic, amnestic, and analgesic properties; is soluble; has a high therapeutic index; and no toxicity. The ideal sedative is also easy to administrate, contains no active metabolites, has minimal actions with other drugs, is reversible, and is cost effective. The problem is, there really is no ideal sedative agent. There is inadequate knowledge about the drugs [used to treat COVID-19 in the ICU] available to us, the dosage, and importantly, the pharmacokinetics and dynamics of these medications.”
The classic types of sedation being used in the ICU, he said, include the benzodiazepines midazolam, lorazepam, and diazepam, as well as propofol. Alternatives include dexmedetomidine, clonidine, ketamine, and the neuroleptics – haloperidol, quetiapine, olanzapine, ziprasidone, and risperidone. “The advantages of benzos are that they are anxiolytics, amnestics, and they are good sedatives with minimal hemodynamic effects,” Dr. Greenberg said.
Advantages of propofol include its sedative, hypnotic, and anxiolytic properties, he said. It reduces the cerebral metabolic rate and can relieve bronchospasm. “However, small studies have found that its use may be associated with an increased risk of delirium,” he said. “It is a respiratory depressant, and it can cause hypotension and decreased contractility. It has no analgesic properties, and two of the big concerns of its use in COVID-19 are the potential for hypertriglyceridemia and propofol infusion syndrome, particularly at doses of greater than 5 mg/kg per hour for greater than 48 hours. It is being given in high doses because patients are requiring higher doses to maintain ventilator synchrony.”
Choosing the right drug
The keys to success for sedation of ICU patients are choosing the right drug at the right dose for the right duration and the right mode of delivery, and applying them to the right population. However, as noted in a recent study, the pandemic poses unique challenges to clinicians in how they care for critically ill COVID-19 patients who require sedation (Anesth Analg. 2020 Apr 22. doi: 10.1213/ANE.0000000000004887). The use of provisional work areas “has escalated because of the amount of patients we’ve had to care for over the past nine months,” Dr. Greenberg said. “We’ve used alternate providers who are not necessarily familiar with the sedation and analgesic protocols and how to use these specific medications. Drug shortages have been on the rise, so there’s a need to understand alternative agents that can be used.”
COVID-19 patients face the potential risk for an increase in drug-drug interactions and side effects due to the polypharmacy that is often required to provide adequate sedation during mechanical ventilation. He noted that these patients may have “unusually high” analgesia and sedation requirements, particularly when they’re mechanically ventilated. A hypothesis as to why patients with COVID-19 require so much sedation and analgesia is that they often have a high respiratory drive and ventilator dyssynchrony, which requires increased neuromuscular blockade. “They also have an intense inflammatory response, which may be linked to tolerance of specific opioids and other medications,” Dr. Greenberg said. “Many ventilated COVID-19 patients are of younger age and previously in good health, and therefore, have an excellent metabolism. Health care providers are concerned about self-extubation. This prompts bedside providers to administer more sedatives to prevent this unwanted complication. There may also be a reduction of drip modifications by health care workers because of the potential risk of contracting COVID-19 when going into the room multiple times and for long periods of time” (Anesth Analg. 2020;131[1]:e34-e35).
According to a sedation resource on the SCCM website, about 5% of COVID-19 patients require mechanical ventilation. “There has been a massive shortage of the usual drugs that we use,” Dr. Greenberg said. “The demand for sedatives has increased by approximately 91%, while the demand for analgesics has increased by 79%, and neuromuscular blocker demand has increased by 105%.”
A retrospective study of 24 COVID-19 patients who required ventilation in the ICU found that the median daily dose of benzodiazepines was significantly higher, compared with the median daily dose used in the OSCILLATE trial (a median of 270 mg vs. 199 mg, respectively; Anesth Analg. 2020;131[4]e198-e200. doi: 10.1213/ane.0000000000005131). In addition, their median daily dose of opioid was approximately three times higher, compared with patients in the OSCILLATE trial (a median of 775 mg vs. 289 mg). Other agents used included propofol (84%), dexmedetomidine (53%), and ketamine (11%).
“A potential strategy for COVID-19 ICU patient sedation should be analgesia first, as indicated in the 2018 PADIS guidelines,” Dr. Greenberg advised. “We should also apply nonpharmacologic measures to reduce delirium. In nonintubated patients, we should use light to moderate sedation, targeting a RASS of –2 to +1, using hydromorphone or fentanyl boluses for analgesia and midazolam boluses or dexmedetomidine for sedation,.”
For intubated patients, he continued, target a RASS of –3 to –4, or –4 to –5 in those who require neuromuscular blockade. “Use propofol first then intermittent boluses of benzodiazepines,” said Dr. Greenberg, editor-in-chief of the Anesthesia Patient Safety Foundation newsletter. “For heavy sedation, use midazolam and supplement with ketamine and other analgesics and sedatives such as barbiturates, methadone, and even inhalation anesthetics in some cases.”
For analgesia in intubated patients, use fentanyl boluses then infusion. “Patients can easily become tachyphylactic to fentanyl, and it has a long context-sensitive half time,” he said. “Hydromorphone may be least affected by organ dysfunction.”
Dr. Greenberg concluded his presentation by stating that more studies are required “to delineate the best analgesia/sedation strategies and monitoring modalities for COVID-19 ICU patients.”
In commenting on the presentation, Mangala Narasimhan, DO, FCCP, senior vice president and director of critical care services at Northwell Health, said that the recommendations regarding sedation highlight a struggle that ICU providers have been dealing with during the COVID-19 epidemic.
“There have been unique challenges with COVID-19 and intubated patients. We have seen severe ventilator dyssynchrony and prolonged duration of mechanical ventilation. I think we can all agree that these patients have extremely high metabolic rates, have required high levels of sedation, have an increased need for neuromuscular blockade, and have high levels of delirium for extended periods of time. The recommendations provided here are reasonable. Strategies to prevent delirium should be employed, pain management should be prioritized, analgesics can help reduce the need for opioids. Alternatives to sedation are useful in this patient population and are well tolerated. Drug shortages have provided additional challenges to these strategies and have required us to think about the use of alternative agents. The recommendations echo the experience we have had with large numbers of intubated COVID-19 patients.”
Dr. Greenberg disclosed that he receives a stipend from the Anesthesia Patient Safety Foundation for serving as editor-in-chief of the foundation’s newsletter.
According to the best available evidence, analagosedation remains the focus for managing COVID-19 ICU patients, according to Steven B. Greenberg, MD, FCCP, FCCM.
“The choice of sedation and analgesia is important,” Dr. Greenberg, vice chair of education in the department of anesthesiology at Evanston Hospital, part of NorthShore University Health System, Chicago, said at a Society for Critical Care virtual meeting: COVID-19: What’s Next. “We know that the right choice of these two components may increase liberation from ventilators, earlier ICU discharge, and return to normal brain function and independent functional status.”
Analgesia first
Prior to the current pandemic, the approach to sedation of patients in the ICU was based on the PADIS Guidelines of 2018, which call for an assessment-driven, protocol-based stepwise approach to pain and sedation management in critically ill adults (Crit Care Med. 2018;46:e825-73). “” Dr. Greenberg said. “We know that pain management should be a priority of sedation, because pain may increase the risk of delirium, anxiety, and endocrine suppression, and may increase the risk of release of endogenous catecholamines, ischemia, and hypermetabolic states.”
Fentanyl appears to be the most common opioid analgesic used for patients in the ICU, “but fentanyl is a very lipophilic drug and has a long context-sensitive half-life,” he said. “There are components to fentanyl that allow it to become a very long-acting drug upon days and days of infusion. Another opioid used is remifentanil, which is typically short-acting because it is broken down in the blood by esterases, but may cause rigidity at higher doses. Dilaudid seems to be the least affected by organ dysfunction. In our very critically ill, prolonged mechanically ventilated COVID-19 patients, we’ve been using methadone for its NMDA [N-methyl-D-aspartate] antagonistic effect and its opioid-sparing effects.”
As for nonopioid analgesics, Dr. Greenberg said that clinicians have shied away from using NSAIDs because of their side effects. “Tramadol indirectly inhibits reuptake of norepinephrine and serotonin, and ketamine is being used a lot more because of its NMDA antagonist effect,” he said. “Lidocaine and gabapentin have also been used.”
In a recent systematic review and meta-analysis, researchers assessed 34 trials that examined adjuvant analgesic use with an opioid in critically ill patients versus an opioid alone (Crit Care Expl. 2020;2:e0157). They found that when using an adjuvant such as acetaminophen, clonidine, dexmedetomidine, gabapentin, ketamine, magnesium, nefopam, NSAIDs, pregabalin, and tramadol, there was a reduction in pain scores as well as a reduction in opioid consumption. “So, clinicians should consider using adjuvant agents to limit opioid exposure and improve pain scores in the critically ill,” Dr. Greenberg said.
ICU delirium: Risk factors, prevention
Delirium in COVID-19 patients treated in the ICU of particular concern. According to a systematic review of 33 studies, 11 risk factors for delirium in the ICU were supported by strong or moderate levels of evidence (Crit Care Med. 2015;43:40-7). These include age, dementia, hypertension, emergency surgery, trauma, APACHE score of II, need for mechanical ventilation, metabolic acidosis, delirium on prior day, coma, and dexmedetomidine use. Risk factors for ICU delirium among COVID-19 patients, however, “are far different,” Dr. Greenberg said. “Why? First and foremost, we are restricting visitation of family,” he said. “That family connection largely can be lost. Second, there are limitations of nonpharmacologic interventions. There is less mobility and physical therapy employed because of the risk of health care workers’ exposure to the virus. There’s also uncertainty about the global pandemic. Anxiety and depression come with that, as well as disruptions to spiritual and religious services.”
Strategies for preventing delirium remain the same as before the pandemic and in accord with recent clinical practice guidelines: Reduce the use of certain drugs such as benzodiazepines and narcotics, reorient the patients, treat dehydration, use hearing aids and eyeglasses in patients who have them, use ear plugs to cancel noise, mobilize patients, maintain sleep/awake cycles, and encourage sedation holidays (Crit Care Med. 2018;46[9]:e825-73).
A recent study from France found that among 58 patients with COVID-19, 65% had positive Confusion Assessment Method (CAM)–ICU findings and 69% had agitation (N Engl J Med 2020;382:2268-70). Most of the patients (86%) received midazolam, 47% received propofol, and all received sufentanil. “In the pre-COVID days, we would use midazolam as a second-line agent for many of these patients,” Dr. Greenberg said. “So, times really have changed.”
The fate of COVID-19 patients following discharge from the ICU remains a concern, continued Dr. Greenberg, clinical professor of anesthesiology at the University of Chicago. A recent journal article by Michelle Biehl, MD, and Denise Sese, MD, noted that post–intensive care syndrome (PICS) or new or worsening impairment in any physical, cognitive, or mental domain is of significant concern among COVID-19 patients following their ICU stay (Cleveland Clin J Med 2020 Aug doi: 10.3949/ccjm.87a.ccc055). The authors stated that COVID-19 patients may face a higher risk of PICS because of restricted family visitation, prolonged mechanical ventilation, exposure to higher amounts of sedatives, and limited physical therapy during hospital stay.
No ideal sedative agent
The 2018 PADIS Guidelines on the use of ICU sedation suggested strong evidence for modifiable risk factors producing delirium in the context of benzodiazepines and blood transfusion. They recommend a light level of sedation and the use of propofol or dexmedetomidine over benzodiazepines. They also recommend routine delirium testing such as using the CAM-ICU or Intensive Care Delirium Screening Checklist (ICDSC) and nonpharmacologic therapies such as reorientation, cognitive stimulation, sleep improvement, and mobilization.
Several sedation-related factors may be related to an increased risk of delirium. “The type, dose, duration, and mode of delivery are very important,” Dr. Greenberg said. “The ideal sedative agent has a rapid, predictable onset; is short-acting; has anxiolytic, amnestic, and analgesic properties; is soluble; has a high therapeutic index; and no toxicity. The ideal sedative is also easy to administrate, contains no active metabolites, has minimal actions with other drugs, is reversible, and is cost effective. The problem is, there really is no ideal sedative agent. There is inadequate knowledge about the drugs [used to treat COVID-19 in the ICU] available to us, the dosage, and importantly, the pharmacokinetics and dynamics of these medications.”
The classic types of sedation being used in the ICU, he said, include the benzodiazepines midazolam, lorazepam, and diazepam, as well as propofol. Alternatives include dexmedetomidine, clonidine, ketamine, and the neuroleptics – haloperidol, quetiapine, olanzapine, ziprasidone, and risperidone. “The advantages of benzos are that they are anxiolytics, amnestics, and they are good sedatives with minimal hemodynamic effects,” Dr. Greenberg said.
Advantages of propofol include its sedative, hypnotic, and anxiolytic properties, he said. It reduces the cerebral metabolic rate and can relieve bronchospasm. “However, small studies have found that its use may be associated with an increased risk of delirium,” he said. “It is a respiratory depressant, and it can cause hypotension and decreased contractility. It has no analgesic properties, and two of the big concerns of its use in COVID-19 are the potential for hypertriglyceridemia and propofol infusion syndrome, particularly at doses of greater than 5 mg/kg per hour for greater than 48 hours. It is being given in high doses because patients are requiring higher doses to maintain ventilator synchrony.”
Choosing the right drug
The keys to success for sedation of ICU patients are choosing the right drug at the right dose for the right duration and the right mode of delivery, and applying them to the right population. However, as noted in a recent study, the pandemic poses unique challenges to clinicians in how they care for critically ill COVID-19 patients who require sedation (Anesth Analg. 2020 Apr 22. doi: 10.1213/ANE.0000000000004887). The use of provisional work areas “has escalated because of the amount of patients we’ve had to care for over the past nine months,” Dr. Greenberg said. “We’ve used alternate providers who are not necessarily familiar with the sedation and analgesic protocols and how to use these specific medications. Drug shortages have been on the rise, so there’s a need to understand alternative agents that can be used.”
COVID-19 patients face the potential risk for an increase in drug-drug interactions and side effects due to the polypharmacy that is often required to provide adequate sedation during mechanical ventilation. He noted that these patients may have “unusually high” analgesia and sedation requirements, particularly when they’re mechanically ventilated. A hypothesis as to why patients with COVID-19 require so much sedation and analgesia is that they often have a high respiratory drive and ventilator dyssynchrony, which requires increased neuromuscular blockade. “They also have an intense inflammatory response, which may be linked to tolerance of specific opioids and other medications,” Dr. Greenberg said. “Many ventilated COVID-19 patients are of younger age and previously in good health, and therefore, have an excellent metabolism. Health care providers are concerned about self-extubation. This prompts bedside providers to administer more sedatives to prevent this unwanted complication. There may also be a reduction of drip modifications by health care workers because of the potential risk of contracting COVID-19 when going into the room multiple times and for long periods of time” (Anesth Analg. 2020;131[1]:e34-e35).
According to a sedation resource on the SCCM website, about 5% of COVID-19 patients require mechanical ventilation. “There has been a massive shortage of the usual drugs that we use,” Dr. Greenberg said. “The demand for sedatives has increased by approximately 91%, while the demand for analgesics has increased by 79%, and neuromuscular blocker demand has increased by 105%.”
A retrospective study of 24 COVID-19 patients who required ventilation in the ICU found that the median daily dose of benzodiazepines was significantly higher, compared with the median daily dose used in the OSCILLATE trial (a median of 270 mg vs. 199 mg, respectively; Anesth Analg. 2020;131[4]e198-e200. doi: 10.1213/ane.0000000000005131). In addition, their median daily dose of opioid was approximately three times higher, compared with patients in the OSCILLATE trial (a median of 775 mg vs. 289 mg). Other agents used included propofol (84%), dexmedetomidine (53%), and ketamine (11%).
“A potential strategy for COVID-19 ICU patient sedation should be analgesia first, as indicated in the 2018 PADIS guidelines,” Dr. Greenberg advised. “We should also apply nonpharmacologic measures to reduce delirium. In nonintubated patients, we should use light to moderate sedation, targeting a RASS of –2 to +1, using hydromorphone or fentanyl boluses for analgesia and midazolam boluses or dexmedetomidine for sedation,.”
For intubated patients, he continued, target a RASS of –3 to –4, or –4 to –5 in those who require neuromuscular blockade. “Use propofol first then intermittent boluses of benzodiazepines,” said Dr. Greenberg, editor-in-chief of the Anesthesia Patient Safety Foundation newsletter. “For heavy sedation, use midazolam and supplement with ketamine and other analgesics and sedatives such as barbiturates, methadone, and even inhalation anesthetics in some cases.”
For analgesia in intubated patients, use fentanyl boluses then infusion. “Patients can easily become tachyphylactic to fentanyl, and it has a long context-sensitive half time,” he said. “Hydromorphone may be least affected by organ dysfunction.”
Dr. Greenberg concluded his presentation by stating that more studies are required “to delineate the best analgesia/sedation strategies and monitoring modalities for COVID-19 ICU patients.”
In commenting on the presentation, Mangala Narasimhan, DO, FCCP, senior vice president and director of critical care services at Northwell Health, said that the recommendations regarding sedation highlight a struggle that ICU providers have been dealing with during the COVID-19 epidemic.
“There have been unique challenges with COVID-19 and intubated patients. We have seen severe ventilator dyssynchrony and prolonged duration of mechanical ventilation. I think we can all agree that these patients have extremely high metabolic rates, have required high levels of sedation, have an increased need for neuromuscular blockade, and have high levels of delirium for extended periods of time. The recommendations provided here are reasonable. Strategies to prevent delirium should be employed, pain management should be prioritized, analgesics can help reduce the need for opioids. Alternatives to sedation are useful in this patient population and are well tolerated. Drug shortages have provided additional challenges to these strategies and have required us to think about the use of alternative agents. The recommendations echo the experience we have had with large numbers of intubated COVID-19 patients.”
Dr. Greenberg disclosed that he receives a stipend from the Anesthesia Patient Safety Foundation for serving as editor-in-chief of the foundation’s newsletter.
According to the best available evidence, analagosedation remains the focus for managing COVID-19 ICU patients, according to Steven B. Greenberg, MD, FCCP, FCCM.
“The choice of sedation and analgesia is important,” Dr. Greenberg, vice chair of education in the department of anesthesiology at Evanston Hospital, part of NorthShore University Health System, Chicago, said at a Society for Critical Care virtual meeting: COVID-19: What’s Next. “We know that the right choice of these two components may increase liberation from ventilators, earlier ICU discharge, and return to normal brain function and independent functional status.”
Analgesia first
Prior to the current pandemic, the approach to sedation of patients in the ICU was based on the PADIS Guidelines of 2018, which call for an assessment-driven, protocol-based stepwise approach to pain and sedation management in critically ill adults (Crit Care Med. 2018;46:e825-73). “” Dr. Greenberg said. “We know that pain management should be a priority of sedation, because pain may increase the risk of delirium, anxiety, and endocrine suppression, and may increase the risk of release of endogenous catecholamines, ischemia, and hypermetabolic states.”
Fentanyl appears to be the most common opioid analgesic used for patients in the ICU, “but fentanyl is a very lipophilic drug and has a long context-sensitive half-life,” he said. “There are components to fentanyl that allow it to become a very long-acting drug upon days and days of infusion. Another opioid used is remifentanil, which is typically short-acting because it is broken down in the blood by esterases, but may cause rigidity at higher doses. Dilaudid seems to be the least affected by organ dysfunction. In our very critically ill, prolonged mechanically ventilated COVID-19 patients, we’ve been using methadone for its NMDA [N-methyl-D-aspartate] antagonistic effect and its opioid-sparing effects.”
As for nonopioid analgesics, Dr. Greenberg said that clinicians have shied away from using NSAIDs because of their side effects. “Tramadol indirectly inhibits reuptake of norepinephrine and serotonin, and ketamine is being used a lot more because of its NMDA antagonist effect,” he said. “Lidocaine and gabapentin have also been used.”
In a recent systematic review and meta-analysis, researchers assessed 34 trials that examined adjuvant analgesic use with an opioid in critically ill patients versus an opioid alone (Crit Care Expl. 2020;2:e0157). They found that when using an adjuvant such as acetaminophen, clonidine, dexmedetomidine, gabapentin, ketamine, magnesium, nefopam, NSAIDs, pregabalin, and tramadol, there was a reduction in pain scores as well as a reduction in opioid consumption. “So, clinicians should consider using adjuvant agents to limit opioid exposure and improve pain scores in the critically ill,” Dr. Greenberg said.
ICU delirium: Risk factors, prevention
Delirium in COVID-19 patients treated in the ICU of particular concern. According to a systematic review of 33 studies, 11 risk factors for delirium in the ICU were supported by strong or moderate levels of evidence (Crit Care Med. 2015;43:40-7). These include age, dementia, hypertension, emergency surgery, trauma, APACHE score of II, need for mechanical ventilation, metabolic acidosis, delirium on prior day, coma, and dexmedetomidine use. Risk factors for ICU delirium among COVID-19 patients, however, “are far different,” Dr. Greenberg said. “Why? First and foremost, we are restricting visitation of family,” he said. “That family connection largely can be lost. Second, there are limitations of nonpharmacologic interventions. There is less mobility and physical therapy employed because of the risk of health care workers’ exposure to the virus. There’s also uncertainty about the global pandemic. Anxiety and depression come with that, as well as disruptions to spiritual and religious services.”
Strategies for preventing delirium remain the same as before the pandemic and in accord with recent clinical practice guidelines: Reduce the use of certain drugs such as benzodiazepines and narcotics, reorient the patients, treat dehydration, use hearing aids and eyeglasses in patients who have them, use ear plugs to cancel noise, mobilize patients, maintain sleep/awake cycles, and encourage sedation holidays (Crit Care Med. 2018;46[9]:e825-73).
A recent study from France found that among 58 patients with COVID-19, 65% had positive Confusion Assessment Method (CAM)–ICU findings and 69% had agitation (N Engl J Med 2020;382:2268-70). Most of the patients (86%) received midazolam, 47% received propofol, and all received sufentanil. “In the pre-COVID days, we would use midazolam as a second-line agent for many of these patients,” Dr. Greenberg said. “So, times really have changed.”
The fate of COVID-19 patients following discharge from the ICU remains a concern, continued Dr. Greenberg, clinical professor of anesthesiology at the University of Chicago. A recent journal article by Michelle Biehl, MD, and Denise Sese, MD, noted that post–intensive care syndrome (PICS) or new or worsening impairment in any physical, cognitive, or mental domain is of significant concern among COVID-19 patients following their ICU stay (Cleveland Clin J Med 2020 Aug doi: 10.3949/ccjm.87a.ccc055). The authors stated that COVID-19 patients may face a higher risk of PICS because of restricted family visitation, prolonged mechanical ventilation, exposure to higher amounts of sedatives, and limited physical therapy during hospital stay.
No ideal sedative agent
The 2018 PADIS Guidelines on the use of ICU sedation suggested strong evidence for modifiable risk factors producing delirium in the context of benzodiazepines and blood transfusion. They recommend a light level of sedation and the use of propofol or dexmedetomidine over benzodiazepines. They also recommend routine delirium testing such as using the CAM-ICU or Intensive Care Delirium Screening Checklist (ICDSC) and nonpharmacologic therapies such as reorientation, cognitive stimulation, sleep improvement, and mobilization.
Several sedation-related factors may be related to an increased risk of delirium. “The type, dose, duration, and mode of delivery are very important,” Dr. Greenberg said. “The ideal sedative agent has a rapid, predictable onset; is short-acting; has anxiolytic, amnestic, and analgesic properties; is soluble; has a high therapeutic index; and no toxicity. The ideal sedative is also easy to administrate, contains no active metabolites, has minimal actions with other drugs, is reversible, and is cost effective. The problem is, there really is no ideal sedative agent. There is inadequate knowledge about the drugs [used to treat COVID-19 in the ICU] available to us, the dosage, and importantly, the pharmacokinetics and dynamics of these medications.”
The classic types of sedation being used in the ICU, he said, include the benzodiazepines midazolam, lorazepam, and diazepam, as well as propofol. Alternatives include dexmedetomidine, clonidine, ketamine, and the neuroleptics – haloperidol, quetiapine, olanzapine, ziprasidone, and risperidone. “The advantages of benzos are that they are anxiolytics, amnestics, and they are good sedatives with minimal hemodynamic effects,” Dr. Greenberg said.
Advantages of propofol include its sedative, hypnotic, and anxiolytic properties, he said. It reduces the cerebral metabolic rate and can relieve bronchospasm. “However, small studies have found that its use may be associated with an increased risk of delirium,” he said. “It is a respiratory depressant, and it can cause hypotension and decreased contractility. It has no analgesic properties, and two of the big concerns of its use in COVID-19 are the potential for hypertriglyceridemia and propofol infusion syndrome, particularly at doses of greater than 5 mg/kg per hour for greater than 48 hours. It is being given in high doses because patients are requiring higher doses to maintain ventilator synchrony.”
Choosing the right drug
The keys to success for sedation of ICU patients are choosing the right drug at the right dose for the right duration and the right mode of delivery, and applying them to the right population. However, as noted in a recent study, the pandemic poses unique challenges to clinicians in how they care for critically ill COVID-19 patients who require sedation (Anesth Analg. 2020 Apr 22. doi: 10.1213/ANE.0000000000004887). The use of provisional work areas “has escalated because of the amount of patients we’ve had to care for over the past nine months,” Dr. Greenberg said. “We’ve used alternate providers who are not necessarily familiar with the sedation and analgesic protocols and how to use these specific medications. Drug shortages have been on the rise, so there’s a need to understand alternative agents that can be used.”
COVID-19 patients face the potential risk for an increase in drug-drug interactions and side effects due to the polypharmacy that is often required to provide adequate sedation during mechanical ventilation. He noted that these patients may have “unusually high” analgesia and sedation requirements, particularly when they’re mechanically ventilated. A hypothesis as to why patients with COVID-19 require so much sedation and analgesia is that they often have a high respiratory drive and ventilator dyssynchrony, which requires increased neuromuscular blockade. “They also have an intense inflammatory response, which may be linked to tolerance of specific opioids and other medications,” Dr. Greenberg said. “Many ventilated COVID-19 patients are of younger age and previously in good health, and therefore, have an excellent metabolism. Health care providers are concerned about self-extubation. This prompts bedside providers to administer more sedatives to prevent this unwanted complication. There may also be a reduction of drip modifications by health care workers because of the potential risk of contracting COVID-19 when going into the room multiple times and for long periods of time” (Anesth Analg. 2020;131[1]:e34-e35).
According to a sedation resource on the SCCM website, about 5% of COVID-19 patients require mechanical ventilation. “There has been a massive shortage of the usual drugs that we use,” Dr. Greenberg said. “The demand for sedatives has increased by approximately 91%, while the demand for analgesics has increased by 79%, and neuromuscular blocker demand has increased by 105%.”
A retrospective study of 24 COVID-19 patients who required ventilation in the ICU found that the median daily dose of benzodiazepines was significantly higher, compared with the median daily dose used in the OSCILLATE trial (a median of 270 mg vs. 199 mg, respectively; Anesth Analg. 2020;131[4]e198-e200. doi: 10.1213/ane.0000000000005131). In addition, their median daily dose of opioid was approximately three times higher, compared with patients in the OSCILLATE trial (a median of 775 mg vs. 289 mg). Other agents used included propofol (84%), dexmedetomidine (53%), and ketamine (11%).
“A potential strategy for COVID-19 ICU patient sedation should be analgesia first, as indicated in the 2018 PADIS guidelines,” Dr. Greenberg advised. “We should also apply nonpharmacologic measures to reduce delirium. In nonintubated patients, we should use light to moderate sedation, targeting a RASS of –2 to +1, using hydromorphone or fentanyl boluses for analgesia and midazolam boluses or dexmedetomidine for sedation,.”
For intubated patients, he continued, target a RASS of –3 to –4, or –4 to –5 in those who require neuromuscular blockade. “Use propofol first then intermittent boluses of benzodiazepines,” said Dr. Greenberg, editor-in-chief of the Anesthesia Patient Safety Foundation newsletter. “For heavy sedation, use midazolam and supplement with ketamine and other analgesics and sedatives such as barbiturates, methadone, and even inhalation anesthetics in some cases.”
For analgesia in intubated patients, use fentanyl boluses then infusion. “Patients can easily become tachyphylactic to fentanyl, and it has a long context-sensitive half time,” he said. “Hydromorphone may be least affected by organ dysfunction.”
Dr. Greenberg concluded his presentation by stating that more studies are required “to delineate the best analgesia/sedation strategies and monitoring modalities for COVID-19 ICU patients.”
In commenting on the presentation, Mangala Narasimhan, DO, FCCP, senior vice president and director of critical care services at Northwell Health, said that the recommendations regarding sedation highlight a struggle that ICU providers have been dealing with during the COVID-19 epidemic.
“There have been unique challenges with COVID-19 and intubated patients. We have seen severe ventilator dyssynchrony and prolonged duration of mechanical ventilation. I think we can all agree that these patients have extremely high metabolic rates, have required high levels of sedation, have an increased need for neuromuscular blockade, and have high levels of delirium for extended periods of time. The recommendations provided here are reasonable. Strategies to prevent delirium should be employed, pain management should be prioritized, analgesics can help reduce the need for opioids. Alternatives to sedation are useful in this patient population and are well tolerated. Drug shortages have provided additional challenges to these strategies and have required us to think about the use of alternative agents. The recommendations echo the experience we have had with large numbers of intubated COVID-19 patients.”
Dr. Greenberg disclosed that he receives a stipend from the Anesthesia Patient Safety Foundation for serving as editor-in-chief of the foundation’s newsletter.
FROM AN SCCM VIRTUAL MEETING
COVID-19 airway management: Expert tips on infection control
As continue to evolve, practicing vigilant transmission-based infection control precautions remains essential.
This starts with observing droplet precautions to prevent exposure to droplets larger than 5 microns in size, Charles Griffis, PhD, CRNA, said at a Society for Critical Care Medicine virtual meeting: COVID-19: What’s Next. “These are particles exhaled from infected persons and which fall within around 6 feet and involve an exposure time of 15 or more minutes of contact,” said Dr. Griffis, of the department of anesthesiology at the University of Southern California, Los Angeles. “We will always observe standard precautions, which include hand hygiene, gloves, hair and eye cover, medical mask, and face shield. We will observe these at all times for all patients and layer our transmission-based precautions on top.”
During aerosol-producing procedures such as airway management maneuvers, tracheostomies, and bronchoscopies, very fine microscopic particles less than 5 microns in size are produced, which remain airborne for potentially many hours and travel long distances. “We will add an N95 mask or a powered air-purifying respirator (PAPR) device to filter out tiny particles in addition to our ever-present standard precautions,” he said. “Contact precautions are indicated for direct contact with patient saliva, blood, urine, and stool. In addition to standard precautions, we’re going to add an impermeable gown and we’ll continue with gloves, eye protection, and shoe covers. The message is to all of us. We have to observe all of the infection precautions that all of us have learned and trained in to avoid exposure.”
In terms of airway management for infected patients for elective procedures and surgery, recommendations based on current and previous coronavirus outbreaks suggest that all patients get polymerase chain reaction (PCR) tested within 24-48 hours of elective procedures or surgeries. If positive, they should be quarantined for 10-14 days and then, if asymptomatic, these patients may be retested or they can be regarded as negative. “Patients who are PCR positive with active infection and active symptoms receive only urgent or emergent care in most settings,” said Dr. Griffis, a member of the American Association of Nurse Anesthetists Infection Control Advisory Panel. “The care provided to our patients, whether they’re positive or not, is individualized per patient needs and institutional policy. Some folks have made the decision to treat all patients as infected and to use airborne precautions for all aerosol-producing procedures for all patients all the time.”
When a COVID-19 patient requires emergent or urgent airway management because of respiratory failure or some other surgical or procedural intervention necessitating airway management, preprocedural planning is key, he continued. This means establishing the steps in airway management scenarios for infected patients and rehearsing those steps in each ICU setting with key personnel such as nurses, respiratory therapists, and medical staff. “You want to make sure that the PPE is readily available and determine and limit the number of personnel that are going to enter the patient’s room or area for airway management,” Dr. Griffis said. “Have all the airway equipment and drugs immediately available. Perhaps you could organize them in a cart which is decontaminated after every use.”
He also recommends forming an intubation team for ICUs and perhaps even for ORs, where the most experienced clinicians perform airway management. “This helps to avoid unnecessary airway manipulation and minimizes personnel exposure and time to airway establishment,” he said.
Always attempt to house the infected patient in an airborne isolation, negative-pressure room, with a minimum of 12 exchanges per hour and which will take 35 minutes for 99.99% removal of airborne contaminants after airway management. “These numbers are important to remember for room turnover safety,” he said.
Patient factors to review during airway management include assessing the past medical history, inspecting the airway and considering the patient’s current physiological status as time permits. Previously in the pandemic, intubation was used earlier in the disease course, but now data suggest that patients do better without intubation if possible (Am J Trop Med Hyg. 2020;102[6]. doi: 10.4269/aitmh.20-0283). “This is because the pathophysiology of COVID-19 is such that the lung tissue is predisposed to iatrogenic barotrauma damage from positive-pressure ventilation,” Dr. Griffis said. “In addition, COVID patients appear to tolerate significant hypoxemia without distress in many cases. Therefore, many clinicians now hold off on intubation until the hypoxemic patient begins exhibiting signs and symptoms of respiratory distress.”
Options for delivering noninvasive airway support for COVID-19 patients include high-flow nasal cannula and noninvasive positive-pressure ventilation via CPAP or BiPAP. To mitigate the associated aerosol production, consider applying a surgical mask, helmet, or face mask over the airway device/patient’s face. “Another measure that has proven helpful in general respiratory support is to actually put the patient in a prone position to help redistribute ventilation throughout the lungs,” Dr. Griffis said (see Resp Care. 2015;60[11]:1660-87).
To prepare for the actual intubation procedure, gather two expert intubators who are going to be entering the patient’s room. The team should perform hand hygiene and don full PPE prior to entry. “It’s recommended that you consider wearing double gloves for the intubation,” he said. “Have the airway equipment easily accessible in a central location on a cart or in a kit, and use disposable, single-use equipment if possible. All of the usual intubation equipment to maintain a clear airway and give positive pressure ventilation should be arranged for easy access. A video laryngoscope should be used, if possible, for greater accuracy and reduced procedure time. Ready access to sedation and muscle relaxant drugs must be assured at all times.”
For the intubation procedure itself, Dr. Griffis recommends ensuring that an oxygen source, positive-pressure ventilation, and suction and resuscitation drugs and equipment are available per institutional protocol. Assign one person outside the room to coordinate supplies and assistance. “Preoxygenate the patient as permitted by clinical status,” he said. “A nonrebreathing oxygen mask can be used if sufficient spontaneous ventilation is present. Assess the airway, check and arrange equipment for easy access, and develop the safest airway management plan. Consider a rapid sequence induction and intubation as the first option.” Avoid positive-pressure ventilation or awake fiber optic intubation unless absolutely necessary, thus avoiding aerosol production. “Only ventilate the patient after the endotracheal tube cuff is inflated, to avoid aerosol release,” he said.
For intubation, administer airway procedural drugs and insert the laryngoscope – ideally a video laryngoscope if available. Intubate the trachea under direct vision, inflate the cuff, and remove outer gloves. Then attach the Ambu bag with a 99% filtration efficiency, heat-and-moisture exchange filter; and proceed to ventilate the patient, checking for chest rise, breath sounds, and CO2 production. “Discard contaminated equipment in designated bins and secure the tube,” Dr. Griffis advised. “Attach the ventilator with an HMEF filter to protect the ventilator circuit and inner parts of the machine. Recheck your breath sounds, CO2 production, and oxygen saturation, and adjust your vent settings as indicated.”
For post intubation, Dr. Griffis recommends securing contaminated discardable equipment in biohazard-labeled bins or bags, safely doffing your PPE, and retaining your N95 mask in the room. Remove your inner gloves, perform hand hygiene with soap and water if available, with alcohol-based hand rub if not, then don clean gloves. Exit the room, safely transporting any contaminated equipment that will be reused such as a cart or video laryngoscope to decontamination areas for processing. “Once clear of the room, order your chest x-ray to confirm your tube position per institutional protocol, understanding that radiology techs are all going to be following infection control procedures and wearing their PPE,” he said.
For extubation, Dr. Griffis recommends excusing all nonessential personnel from the patient room and assigning an assistant outside the room for necessary help. An experienced airway management expert should evaluate the patient wearing full PPE and be double-gloved. “If the extubation criteria are met, suction the pharynx and extubate,” he said. “Remove outer gloves and apply desired oxygen delivery equipment to the patient and assess respiratory status and vital signs for stability.” Next, discard all contaminated equipment in designated bins, doff contaminated PPE, and retain your N95 mask. Doff inner gloves, perform hand hygiene, and don clean gloves. “Exit the room, hand off contaminated equipment that is reusable, doff your gloves outside, do hand hygiene, then proceed to change your scrubs and complete your own personal hygiene measures,” he said.
Dr. Griffis reported having no financial disclosures.
“While the PPE used for intubation of a coronavirus patient is certainly more than the typical droplet precautions observed when intubating any other patient, the process and best practices aren’t terribly different from usual standard of care: Ensuring all necessary equipment is readily available with backup plans should the airway be difficult,” said Megan Conroy, MD, assistant professor of clinical medicine at The Ohio State University.
“We’ve been streamlining the team that’s present in the room for intubations of COVID patients, but I’m always amazed at the team members that stand at the ready to lend additional assistance just from the other side of the door. So while fewer personnel may be exposed, I wouldn’t consider the team needed for intubation to actually be much smaller, we’re just functioning differently.
In my practice the decision of when to intubate, clinically, doesn’t vary too much from any other form of severe ARDS. We may tolerate higher FiO2 requirements on heated high-flow nasal cannula if the patient exhibits acceptable work of breathing, but I wouldn’t advise allowing a patient to remain hypoxemic with oxygen needs unmet by noninvasive methods out of fear of intubation or ventilator management. In my opinion, this simply delays a necessary therapy and only makes for a higher risk intubation. Certainly, the decision to intubate is never based on only one single data point, but takes an expert assessment of the whole clinical picture.
I’d assert that it’s true in every disease that patients do better if it’s possible to avoid intubation – but I would argue that the ability to avoid intubation is determined primarily by the disease course and clinical scenario, and not by whether the physician wishes to avoid intubation or not. If I can safely manage a patient off of a ventilator, I will always do so, COVID or otherwise. I think in this phase of the pandemic, patients ‘do better without intubation’ because those who didn’t require intubation were inherently doing better!”
As continue to evolve, practicing vigilant transmission-based infection control precautions remains essential.
This starts with observing droplet precautions to prevent exposure to droplets larger than 5 microns in size, Charles Griffis, PhD, CRNA, said at a Society for Critical Care Medicine virtual meeting: COVID-19: What’s Next. “These are particles exhaled from infected persons and which fall within around 6 feet and involve an exposure time of 15 or more minutes of contact,” said Dr. Griffis, of the department of anesthesiology at the University of Southern California, Los Angeles. “We will always observe standard precautions, which include hand hygiene, gloves, hair and eye cover, medical mask, and face shield. We will observe these at all times for all patients and layer our transmission-based precautions on top.”
During aerosol-producing procedures such as airway management maneuvers, tracheostomies, and bronchoscopies, very fine microscopic particles less than 5 microns in size are produced, which remain airborne for potentially many hours and travel long distances. “We will add an N95 mask or a powered air-purifying respirator (PAPR) device to filter out tiny particles in addition to our ever-present standard precautions,” he said. “Contact precautions are indicated for direct contact with patient saliva, blood, urine, and stool. In addition to standard precautions, we’re going to add an impermeable gown and we’ll continue with gloves, eye protection, and shoe covers. The message is to all of us. We have to observe all of the infection precautions that all of us have learned and trained in to avoid exposure.”
In terms of airway management for infected patients for elective procedures and surgery, recommendations based on current and previous coronavirus outbreaks suggest that all patients get polymerase chain reaction (PCR) tested within 24-48 hours of elective procedures or surgeries. If positive, they should be quarantined for 10-14 days and then, if asymptomatic, these patients may be retested or they can be regarded as negative. “Patients who are PCR positive with active infection and active symptoms receive only urgent or emergent care in most settings,” said Dr. Griffis, a member of the American Association of Nurse Anesthetists Infection Control Advisory Panel. “The care provided to our patients, whether they’re positive or not, is individualized per patient needs and institutional policy. Some folks have made the decision to treat all patients as infected and to use airborne precautions for all aerosol-producing procedures for all patients all the time.”
When a COVID-19 patient requires emergent or urgent airway management because of respiratory failure or some other surgical or procedural intervention necessitating airway management, preprocedural planning is key, he continued. This means establishing the steps in airway management scenarios for infected patients and rehearsing those steps in each ICU setting with key personnel such as nurses, respiratory therapists, and medical staff. “You want to make sure that the PPE is readily available and determine and limit the number of personnel that are going to enter the patient’s room or area for airway management,” Dr. Griffis said. “Have all the airway equipment and drugs immediately available. Perhaps you could organize them in a cart which is decontaminated after every use.”
He also recommends forming an intubation team for ICUs and perhaps even for ORs, where the most experienced clinicians perform airway management. “This helps to avoid unnecessary airway manipulation and minimizes personnel exposure and time to airway establishment,” he said.
Always attempt to house the infected patient in an airborne isolation, negative-pressure room, with a minimum of 12 exchanges per hour and which will take 35 minutes for 99.99% removal of airborne contaminants after airway management. “These numbers are important to remember for room turnover safety,” he said.
Patient factors to review during airway management include assessing the past medical history, inspecting the airway and considering the patient’s current physiological status as time permits. Previously in the pandemic, intubation was used earlier in the disease course, but now data suggest that patients do better without intubation if possible (Am J Trop Med Hyg. 2020;102[6]. doi: 10.4269/aitmh.20-0283). “This is because the pathophysiology of COVID-19 is such that the lung tissue is predisposed to iatrogenic barotrauma damage from positive-pressure ventilation,” Dr. Griffis said. “In addition, COVID patients appear to tolerate significant hypoxemia without distress in many cases. Therefore, many clinicians now hold off on intubation until the hypoxemic patient begins exhibiting signs and symptoms of respiratory distress.”
Options for delivering noninvasive airway support for COVID-19 patients include high-flow nasal cannula and noninvasive positive-pressure ventilation via CPAP or BiPAP. To mitigate the associated aerosol production, consider applying a surgical mask, helmet, or face mask over the airway device/patient’s face. “Another measure that has proven helpful in general respiratory support is to actually put the patient in a prone position to help redistribute ventilation throughout the lungs,” Dr. Griffis said (see Resp Care. 2015;60[11]:1660-87).
To prepare for the actual intubation procedure, gather two expert intubators who are going to be entering the patient’s room. The team should perform hand hygiene and don full PPE prior to entry. “It’s recommended that you consider wearing double gloves for the intubation,” he said. “Have the airway equipment easily accessible in a central location on a cart or in a kit, and use disposable, single-use equipment if possible. All of the usual intubation equipment to maintain a clear airway and give positive pressure ventilation should be arranged for easy access. A video laryngoscope should be used, if possible, for greater accuracy and reduced procedure time. Ready access to sedation and muscle relaxant drugs must be assured at all times.”
For the intubation procedure itself, Dr. Griffis recommends ensuring that an oxygen source, positive-pressure ventilation, and suction and resuscitation drugs and equipment are available per institutional protocol. Assign one person outside the room to coordinate supplies and assistance. “Preoxygenate the patient as permitted by clinical status,” he said. “A nonrebreathing oxygen mask can be used if sufficient spontaneous ventilation is present. Assess the airway, check and arrange equipment for easy access, and develop the safest airway management plan. Consider a rapid sequence induction and intubation as the first option.” Avoid positive-pressure ventilation or awake fiber optic intubation unless absolutely necessary, thus avoiding aerosol production. “Only ventilate the patient after the endotracheal tube cuff is inflated, to avoid aerosol release,” he said.
For intubation, administer airway procedural drugs and insert the laryngoscope – ideally a video laryngoscope if available. Intubate the trachea under direct vision, inflate the cuff, and remove outer gloves. Then attach the Ambu bag with a 99% filtration efficiency, heat-and-moisture exchange filter; and proceed to ventilate the patient, checking for chest rise, breath sounds, and CO2 production. “Discard contaminated equipment in designated bins and secure the tube,” Dr. Griffis advised. “Attach the ventilator with an HMEF filter to protect the ventilator circuit and inner parts of the machine. Recheck your breath sounds, CO2 production, and oxygen saturation, and adjust your vent settings as indicated.”
For post intubation, Dr. Griffis recommends securing contaminated discardable equipment in biohazard-labeled bins or bags, safely doffing your PPE, and retaining your N95 mask in the room. Remove your inner gloves, perform hand hygiene with soap and water if available, with alcohol-based hand rub if not, then don clean gloves. Exit the room, safely transporting any contaminated equipment that will be reused such as a cart or video laryngoscope to decontamination areas for processing. “Once clear of the room, order your chest x-ray to confirm your tube position per institutional protocol, understanding that radiology techs are all going to be following infection control procedures and wearing their PPE,” he said.
For extubation, Dr. Griffis recommends excusing all nonessential personnel from the patient room and assigning an assistant outside the room for necessary help. An experienced airway management expert should evaluate the patient wearing full PPE and be double-gloved. “If the extubation criteria are met, suction the pharynx and extubate,” he said. “Remove outer gloves and apply desired oxygen delivery equipment to the patient and assess respiratory status and vital signs for stability.” Next, discard all contaminated equipment in designated bins, doff contaminated PPE, and retain your N95 mask. Doff inner gloves, perform hand hygiene, and don clean gloves. “Exit the room, hand off contaminated equipment that is reusable, doff your gloves outside, do hand hygiene, then proceed to change your scrubs and complete your own personal hygiene measures,” he said.
Dr. Griffis reported having no financial disclosures.
“While the PPE used for intubation of a coronavirus patient is certainly more than the typical droplet precautions observed when intubating any other patient, the process and best practices aren’t terribly different from usual standard of care: Ensuring all necessary equipment is readily available with backup plans should the airway be difficult,” said Megan Conroy, MD, assistant professor of clinical medicine at The Ohio State University.
“We’ve been streamlining the team that’s present in the room for intubations of COVID patients, but I’m always amazed at the team members that stand at the ready to lend additional assistance just from the other side of the door. So while fewer personnel may be exposed, I wouldn’t consider the team needed for intubation to actually be much smaller, we’re just functioning differently.
In my practice the decision of when to intubate, clinically, doesn’t vary too much from any other form of severe ARDS. We may tolerate higher FiO2 requirements on heated high-flow nasal cannula if the patient exhibits acceptable work of breathing, but I wouldn’t advise allowing a patient to remain hypoxemic with oxygen needs unmet by noninvasive methods out of fear of intubation or ventilator management. In my opinion, this simply delays a necessary therapy and only makes for a higher risk intubation. Certainly, the decision to intubate is never based on only one single data point, but takes an expert assessment of the whole clinical picture.
I’d assert that it’s true in every disease that patients do better if it’s possible to avoid intubation – but I would argue that the ability to avoid intubation is determined primarily by the disease course and clinical scenario, and not by whether the physician wishes to avoid intubation or not. If I can safely manage a patient off of a ventilator, I will always do so, COVID or otherwise. I think in this phase of the pandemic, patients ‘do better without intubation’ because those who didn’t require intubation were inherently doing better!”
As continue to evolve, practicing vigilant transmission-based infection control precautions remains essential.
This starts with observing droplet precautions to prevent exposure to droplets larger than 5 microns in size, Charles Griffis, PhD, CRNA, said at a Society for Critical Care Medicine virtual meeting: COVID-19: What’s Next. “These are particles exhaled from infected persons and which fall within around 6 feet and involve an exposure time of 15 or more minutes of contact,” said Dr. Griffis, of the department of anesthesiology at the University of Southern California, Los Angeles. “We will always observe standard precautions, which include hand hygiene, gloves, hair and eye cover, medical mask, and face shield. We will observe these at all times for all patients and layer our transmission-based precautions on top.”
During aerosol-producing procedures such as airway management maneuvers, tracheostomies, and bronchoscopies, very fine microscopic particles less than 5 microns in size are produced, which remain airborne for potentially many hours and travel long distances. “We will add an N95 mask or a powered air-purifying respirator (PAPR) device to filter out tiny particles in addition to our ever-present standard precautions,” he said. “Contact precautions are indicated for direct contact with patient saliva, blood, urine, and stool. In addition to standard precautions, we’re going to add an impermeable gown and we’ll continue with gloves, eye protection, and shoe covers. The message is to all of us. We have to observe all of the infection precautions that all of us have learned and trained in to avoid exposure.”
In terms of airway management for infected patients for elective procedures and surgery, recommendations based on current and previous coronavirus outbreaks suggest that all patients get polymerase chain reaction (PCR) tested within 24-48 hours of elective procedures or surgeries. If positive, they should be quarantined for 10-14 days and then, if asymptomatic, these patients may be retested or they can be regarded as negative. “Patients who are PCR positive with active infection and active symptoms receive only urgent or emergent care in most settings,” said Dr. Griffis, a member of the American Association of Nurse Anesthetists Infection Control Advisory Panel. “The care provided to our patients, whether they’re positive or not, is individualized per patient needs and institutional policy. Some folks have made the decision to treat all patients as infected and to use airborne precautions for all aerosol-producing procedures for all patients all the time.”
When a COVID-19 patient requires emergent or urgent airway management because of respiratory failure or some other surgical or procedural intervention necessitating airway management, preprocedural planning is key, he continued. This means establishing the steps in airway management scenarios for infected patients and rehearsing those steps in each ICU setting with key personnel such as nurses, respiratory therapists, and medical staff. “You want to make sure that the PPE is readily available and determine and limit the number of personnel that are going to enter the patient’s room or area for airway management,” Dr. Griffis said. “Have all the airway equipment and drugs immediately available. Perhaps you could organize them in a cart which is decontaminated after every use.”
He also recommends forming an intubation team for ICUs and perhaps even for ORs, where the most experienced clinicians perform airway management. “This helps to avoid unnecessary airway manipulation and minimizes personnel exposure and time to airway establishment,” he said.
Always attempt to house the infected patient in an airborne isolation, negative-pressure room, with a minimum of 12 exchanges per hour and which will take 35 minutes for 99.99% removal of airborne contaminants after airway management. “These numbers are important to remember for room turnover safety,” he said.
Patient factors to review during airway management include assessing the past medical history, inspecting the airway and considering the patient’s current physiological status as time permits. Previously in the pandemic, intubation was used earlier in the disease course, but now data suggest that patients do better without intubation if possible (Am J Trop Med Hyg. 2020;102[6]. doi: 10.4269/aitmh.20-0283). “This is because the pathophysiology of COVID-19 is such that the lung tissue is predisposed to iatrogenic barotrauma damage from positive-pressure ventilation,” Dr. Griffis said. “In addition, COVID patients appear to tolerate significant hypoxemia without distress in many cases. Therefore, many clinicians now hold off on intubation until the hypoxemic patient begins exhibiting signs and symptoms of respiratory distress.”
Options for delivering noninvasive airway support for COVID-19 patients include high-flow nasal cannula and noninvasive positive-pressure ventilation via CPAP or BiPAP. To mitigate the associated aerosol production, consider applying a surgical mask, helmet, or face mask over the airway device/patient’s face. “Another measure that has proven helpful in general respiratory support is to actually put the patient in a prone position to help redistribute ventilation throughout the lungs,” Dr. Griffis said (see Resp Care. 2015;60[11]:1660-87).
To prepare for the actual intubation procedure, gather two expert intubators who are going to be entering the patient’s room. The team should perform hand hygiene and don full PPE prior to entry. “It’s recommended that you consider wearing double gloves for the intubation,” he said. “Have the airway equipment easily accessible in a central location on a cart or in a kit, and use disposable, single-use equipment if possible. All of the usual intubation equipment to maintain a clear airway and give positive pressure ventilation should be arranged for easy access. A video laryngoscope should be used, if possible, for greater accuracy and reduced procedure time. Ready access to sedation and muscle relaxant drugs must be assured at all times.”
For the intubation procedure itself, Dr. Griffis recommends ensuring that an oxygen source, positive-pressure ventilation, and suction and resuscitation drugs and equipment are available per institutional protocol. Assign one person outside the room to coordinate supplies and assistance. “Preoxygenate the patient as permitted by clinical status,” he said. “A nonrebreathing oxygen mask can be used if sufficient spontaneous ventilation is present. Assess the airway, check and arrange equipment for easy access, and develop the safest airway management plan. Consider a rapid sequence induction and intubation as the first option.” Avoid positive-pressure ventilation or awake fiber optic intubation unless absolutely necessary, thus avoiding aerosol production. “Only ventilate the patient after the endotracheal tube cuff is inflated, to avoid aerosol release,” he said.
For intubation, administer airway procedural drugs and insert the laryngoscope – ideally a video laryngoscope if available. Intubate the trachea under direct vision, inflate the cuff, and remove outer gloves. Then attach the Ambu bag with a 99% filtration efficiency, heat-and-moisture exchange filter; and proceed to ventilate the patient, checking for chest rise, breath sounds, and CO2 production. “Discard contaminated equipment in designated bins and secure the tube,” Dr. Griffis advised. “Attach the ventilator with an HMEF filter to protect the ventilator circuit and inner parts of the machine. Recheck your breath sounds, CO2 production, and oxygen saturation, and adjust your vent settings as indicated.”
For post intubation, Dr. Griffis recommends securing contaminated discardable equipment in biohazard-labeled bins or bags, safely doffing your PPE, and retaining your N95 mask in the room. Remove your inner gloves, perform hand hygiene with soap and water if available, with alcohol-based hand rub if not, then don clean gloves. Exit the room, safely transporting any contaminated equipment that will be reused such as a cart or video laryngoscope to decontamination areas for processing. “Once clear of the room, order your chest x-ray to confirm your tube position per institutional protocol, understanding that radiology techs are all going to be following infection control procedures and wearing their PPE,” he said.
For extubation, Dr. Griffis recommends excusing all nonessential personnel from the patient room and assigning an assistant outside the room for necessary help. An experienced airway management expert should evaluate the patient wearing full PPE and be double-gloved. “If the extubation criteria are met, suction the pharynx and extubate,” he said. “Remove outer gloves and apply desired oxygen delivery equipment to the patient and assess respiratory status and vital signs for stability.” Next, discard all contaminated equipment in designated bins, doff contaminated PPE, and retain your N95 mask. Doff inner gloves, perform hand hygiene, and don clean gloves. “Exit the room, hand off contaminated equipment that is reusable, doff your gloves outside, do hand hygiene, then proceed to change your scrubs and complete your own personal hygiene measures,” he said.
Dr. Griffis reported having no financial disclosures.
“While the PPE used for intubation of a coronavirus patient is certainly more than the typical droplet precautions observed when intubating any other patient, the process and best practices aren’t terribly different from usual standard of care: Ensuring all necessary equipment is readily available with backup plans should the airway be difficult,” said Megan Conroy, MD, assistant professor of clinical medicine at The Ohio State University.
“We’ve been streamlining the team that’s present in the room for intubations of COVID patients, but I’m always amazed at the team members that stand at the ready to lend additional assistance just from the other side of the door. So while fewer personnel may be exposed, I wouldn’t consider the team needed for intubation to actually be much smaller, we’re just functioning differently.
In my practice the decision of when to intubate, clinically, doesn’t vary too much from any other form of severe ARDS. We may tolerate higher FiO2 requirements on heated high-flow nasal cannula if the patient exhibits acceptable work of breathing, but I wouldn’t advise allowing a patient to remain hypoxemic with oxygen needs unmet by noninvasive methods out of fear of intubation or ventilator management. In my opinion, this simply delays a necessary therapy and only makes for a higher risk intubation. Certainly, the decision to intubate is never based on only one single data point, but takes an expert assessment of the whole clinical picture.
I’d assert that it’s true in every disease that patients do better if it’s possible to avoid intubation – but I would argue that the ability to avoid intubation is determined primarily by the disease course and clinical scenario, and not by whether the physician wishes to avoid intubation or not. If I can safely manage a patient off of a ventilator, I will always do so, COVID or otherwise. I think in this phase of the pandemic, patients ‘do better without intubation’ because those who didn’t require intubation were inherently doing better!”
FROM AN SCCM VIRTUAL MEETING
Noninvasive ventilation: Options and cautions for patients with COVID-19
Early on in the COVID-19 pandemic,
“We were concerned that, if we put them on high-flow nasal cannula or a noninvasive ventilation, that we would create aerosols that would then be a risk to clinicians,” Meghan Lane-Fall, MD, MSHP, FCCM, said at a Society for Critical Care Medicine virtual meeting called COVID-19: What’s Next. “However, we’ve gotten much more comfortable with infection control. We’ve gotten much more comfortable with controlling these aerosols, with making sure that our clinicians are protected with the appropriate protective equipment. We’ve also realized that patients who end up becoming intubated have really poor outcomes, so we’ve looked at our practice critically and tried to figure out how to support patients noninvasively when that’s possible.”
Respiratory support options
According to Dr. Lane-Fall, an associate professor of anesthesiology and critical care at the University of Pennsylvania, Philadelphia, there are two basic types of respiratory support in patients with moderate, severe, or critical COVID-19: noninvasive and invasive. Noninvasive options include CPAP or BiPAP which can be delivered through nasal pillows, masks, and helmets, as well as high-flow nasal oxygen. Invasive options include endotracheal intubation, tracheostomy, and extracorporeal membrane oxygenation (ECMO), usually the veno-venous (VV) form. “But it’s uncommon to need VV ECMO, even in patients who have critical COVID-19,” she said.
Factors that favor noninvasive ventilation include stably high oxygen requirements, normal mental status, ward location of care, and moderate to severe COVID-19. Factors that favor invasive ventilation include someone who’s deteriorating rapidly, “whose oxygen requirements aren’t stable or who is cardiopulmonary compromised,” said Dr. Lane-Fall, who is also co–medical director of the Trauma Surgery Intensive Care Unit at Penn Presbyterian Medical Center, also in Philadelphia. Other factors include the need for other invasive procedures such as surgery or if they have severe to critical COVID-19, “not just pneumonia, but [illness that’s] progressing into [acute respiratory distress syndrome],” she said.
Indications for urgent endotracheal intubation as opposed to giving a trial of noninvasive ventilation or high-flow nasal oxygen include altered mental status, inability to protect airway, copious amounts of secretions, a Glasgow Coma Scale score of less than 8, severe respiratory acidosis, hypopnea or apnea, shock, or an inability to tolerate noninvasive support. “This is a relative contraindication,” Dr. Lane-Fall said. “I’ve certainly talked people through the BiPAP mask or the helmet. If you tell a patient, ‘I don’t want to have to put in a breathing tube; I want to maintain you on this,’ often they’ll be able to work through it.”
Safety precautions
Aerosolizing procedures require attention to location, personnel, and equipment, including personal protective equipment (PPE), said Dr. Lane-Fall, who is an anesthesiologist by training. “When you are intubating someone, whether they have COVID-19 or not, you are sort of in the belly of the beast,” she said. “You are very exposed to secretions that occur at the time of endotracheal intubation. That’s why it’s important for us to have PPE and barriers to protect ourselves from potential exposure to aerosols during the care of patients with COVID-19.”
In February 2020, the non-for-profit Anesthesia Patient Safety Foundation published recommendations for airway management in patients with suspected COVID-19. A separate guidance was published the British Journal of Anaesthesiology based on emergency tracheal intubation in 202 patients with COVID-19 in Wuhan, China. “The idea here is that you want to intubate under controlled conditions,” said Dr. Lane-Fall, who is an author of the guidance. “You want to use the most experienced operator. You want to have full PPE, including an N95 mask, or something more protective like a powered air purifying respirator or an N95 mask with a face shield. You want the eyes, nose, and mouth of the operator covered completely.”
CPR, another aerosolizing procedure, requires vigilant safety precautions as well. “We struggled with this a little bit at our institution, because our inclination as intensivists when someone is pulseless is to run into the room and start chest compressions and to start resuscitation,” Dr. Lane-Fall said. “But the act of chest compression itself can create aerosols that can present risk to clinicians. We had to tell our clinicians that they have to put on PPE before they do CPR. The buzz phrase here is that there is no emergency in a pandemic. The idea here is that the good of that one patient is outweighed by the good of all the other patients that you could care for if you didn’t have COVID-19 as a clinician. So we have had to encourage our staff to put on PPE first before attending to patients first, even if it delays patient care. Once you have donned PPE, when you’re administering CPR, the number of staff should be minimized. You should have a compressor, and someone to relieve the compressor, and a code leader, someone tending to the airway. But in general, anyone who’s not actively involved should not be in the room.”
Risks during extubation
Extubation of COVID-19 patients is also an aerosolizing procedure not just because you’re pulling an endotracheal tube out of the airway but because coughing is a normal part of extubation. “We’ve had to be careful with how we approach extubation in COVID-19 patients,” Dr. Lane-Fall said. “Ideally you’re doing this in a negative pressure environment. We have also had to use full PPE, covering the eyes and face, and putting on a gown for precaution.”
Reintubation of COVID-19 patients is not uncommon. She and her colleagues at Penn Medicine created procedures for having intubators at the ready outside the room in case the patient were to decompensate clinically. “Another thing we learned is that it’s useful to do a leak test prior to extubation, because there may be airway edema related to prolonged intubation in these patients,” Dr. Lane-Fall said. “We found that, if a leak is absent on checking the cuff leak, the use of steroids for a day or 2 may help decrease airway edema. That improves the chances of extubation success.”
Strategies for aerosol containment
She concluded her remarks by reviewing airway control adjuncts and clinician safety. This includes physically isolating COVID-19 patients in negative pressure rooms and avoiding and minimizing aerosols, including the use of rapid intubation, “where we induce anesthesia for intubation but we don’t bag-mask the patient because that creates aerosols,” she said. The Anesthesia Patient Safety Foundation guidelines advocate for the use of video laryngoscopy so that you can visualize the glottis easily “and make sure that you successfully intubate the glottis and not the esophagus,” she said.
A smart strategy for aerosol containment is to use the most experienced laryngoscopist available. “If you are in a teaching program, ideally you’re using your most experienced resident, or you’re using fellows or attending physicians,” Dr. Lane-Fall said. “This is not the space for an inexperienced learner.”
Another way to make intubation faster and easier in COVID-19 patients is to use an intubation box, which features a plexiglass shield that enables the intubator to use their hands to get in the patient’s airway while being protected from viral droplets generated during intubation. The box can be cleaned after each use. Blueprints for an open source intubation box can be found at http://www.intubationbox.com.
Expert view on aerosol containment in COVID-19
“While there is a dearth of evidence from controlled trials, recommendations mentioned in this story are based on the best available evidence and are in agreement with guidelines from several expert groups,” said David L. Bowton, MD, FCCP, FCCM, of the department of anesthesiology at Wake Forest Baptist Health in Winston-Salem, NC. “The recommendation of Dr. Lane-Fall’s that is perhaps most controversial is the use of an intubation box. Multiple designs for these intubation/aerosol containment devices have been proposed, and the data supporting their ease of use and efficacy has been mixed [See Anaesthesia 2020;75(8):1014-21 and Anaesthesia. 2020. doi: 10.1111/anae.15188]. While bag valve mask ventilation should be avoided if possible, it may be a valuable rescue tool in the severely hypoxemic patient when used with two-person technique to achieve a tight seal and a PEEP valve and an HME over the exhalation port to minimize aerosol spread.
“It cannot be stressed enough that the most skilled individual should be tasked with intubating the patient and as few providers as possible [usually three] should be in the room and have donned full PPE. Negative pressure rooms should be used whenever feasible. Noninvasive ventilation appears safer from an infection control standpoint than initially feared and its use has become more widespread. However, noninvasive ventilation is not without its hazards, and Dr. Lane-Fall’s enumeration of the patient characteristics applicable to the selection of patients for noninvasive ventilation are extremely important. At our institution, the use of noninvasive ventilation and especially high-flow oxygen therapy has increased. Staff have become more comfortable with the donning and doffing of PPE.”
Dr. Lane-Fall reported having no financial disclosures.
Early on in the COVID-19 pandemic,
“We were concerned that, if we put them on high-flow nasal cannula or a noninvasive ventilation, that we would create aerosols that would then be a risk to clinicians,” Meghan Lane-Fall, MD, MSHP, FCCM, said at a Society for Critical Care Medicine virtual meeting called COVID-19: What’s Next. “However, we’ve gotten much more comfortable with infection control. We’ve gotten much more comfortable with controlling these aerosols, with making sure that our clinicians are protected with the appropriate protective equipment. We’ve also realized that patients who end up becoming intubated have really poor outcomes, so we’ve looked at our practice critically and tried to figure out how to support patients noninvasively when that’s possible.”
Respiratory support options
According to Dr. Lane-Fall, an associate professor of anesthesiology and critical care at the University of Pennsylvania, Philadelphia, there are two basic types of respiratory support in patients with moderate, severe, or critical COVID-19: noninvasive and invasive. Noninvasive options include CPAP or BiPAP which can be delivered through nasal pillows, masks, and helmets, as well as high-flow nasal oxygen. Invasive options include endotracheal intubation, tracheostomy, and extracorporeal membrane oxygenation (ECMO), usually the veno-venous (VV) form. “But it’s uncommon to need VV ECMO, even in patients who have critical COVID-19,” she said.
Factors that favor noninvasive ventilation include stably high oxygen requirements, normal mental status, ward location of care, and moderate to severe COVID-19. Factors that favor invasive ventilation include someone who’s deteriorating rapidly, “whose oxygen requirements aren’t stable or who is cardiopulmonary compromised,” said Dr. Lane-Fall, who is also co–medical director of the Trauma Surgery Intensive Care Unit at Penn Presbyterian Medical Center, also in Philadelphia. Other factors include the need for other invasive procedures such as surgery or if they have severe to critical COVID-19, “not just pneumonia, but [illness that’s] progressing into [acute respiratory distress syndrome],” she said.
Indications for urgent endotracheal intubation as opposed to giving a trial of noninvasive ventilation or high-flow nasal oxygen include altered mental status, inability to protect airway, copious amounts of secretions, a Glasgow Coma Scale score of less than 8, severe respiratory acidosis, hypopnea or apnea, shock, or an inability to tolerate noninvasive support. “This is a relative contraindication,” Dr. Lane-Fall said. “I’ve certainly talked people through the BiPAP mask or the helmet. If you tell a patient, ‘I don’t want to have to put in a breathing tube; I want to maintain you on this,’ often they’ll be able to work through it.”
Safety precautions
Aerosolizing procedures require attention to location, personnel, and equipment, including personal protective equipment (PPE), said Dr. Lane-Fall, who is an anesthesiologist by training. “When you are intubating someone, whether they have COVID-19 or not, you are sort of in the belly of the beast,” she said. “You are very exposed to secretions that occur at the time of endotracheal intubation. That’s why it’s important for us to have PPE and barriers to protect ourselves from potential exposure to aerosols during the care of patients with COVID-19.”
In February 2020, the non-for-profit Anesthesia Patient Safety Foundation published recommendations for airway management in patients with suspected COVID-19. A separate guidance was published the British Journal of Anaesthesiology based on emergency tracheal intubation in 202 patients with COVID-19 in Wuhan, China. “The idea here is that you want to intubate under controlled conditions,” said Dr. Lane-Fall, who is an author of the guidance. “You want to use the most experienced operator. You want to have full PPE, including an N95 mask, or something more protective like a powered air purifying respirator or an N95 mask with a face shield. You want the eyes, nose, and mouth of the operator covered completely.”
CPR, another aerosolizing procedure, requires vigilant safety precautions as well. “We struggled with this a little bit at our institution, because our inclination as intensivists when someone is pulseless is to run into the room and start chest compressions and to start resuscitation,” Dr. Lane-Fall said. “But the act of chest compression itself can create aerosols that can present risk to clinicians. We had to tell our clinicians that they have to put on PPE before they do CPR. The buzz phrase here is that there is no emergency in a pandemic. The idea here is that the good of that one patient is outweighed by the good of all the other patients that you could care for if you didn’t have COVID-19 as a clinician. So we have had to encourage our staff to put on PPE first before attending to patients first, even if it delays patient care. Once you have donned PPE, when you’re administering CPR, the number of staff should be minimized. You should have a compressor, and someone to relieve the compressor, and a code leader, someone tending to the airway. But in general, anyone who’s not actively involved should not be in the room.”
Risks during extubation
Extubation of COVID-19 patients is also an aerosolizing procedure not just because you’re pulling an endotracheal tube out of the airway but because coughing is a normal part of extubation. “We’ve had to be careful with how we approach extubation in COVID-19 patients,” Dr. Lane-Fall said. “Ideally you’re doing this in a negative pressure environment. We have also had to use full PPE, covering the eyes and face, and putting on a gown for precaution.”
Reintubation of COVID-19 patients is not uncommon. She and her colleagues at Penn Medicine created procedures for having intubators at the ready outside the room in case the patient were to decompensate clinically. “Another thing we learned is that it’s useful to do a leak test prior to extubation, because there may be airway edema related to prolonged intubation in these patients,” Dr. Lane-Fall said. “We found that, if a leak is absent on checking the cuff leak, the use of steroids for a day or 2 may help decrease airway edema. That improves the chances of extubation success.”
Strategies for aerosol containment
She concluded her remarks by reviewing airway control adjuncts and clinician safety. This includes physically isolating COVID-19 patients in negative pressure rooms and avoiding and minimizing aerosols, including the use of rapid intubation, “where we induce anesthesia for intubation but we don’t bag-mask the patient because that creates aerosols,” she said. The Anesthesia Patient Safety Foundation guidelines advocate for the use of video laryngoscopy so that you can visualize the glottis easily “and make sure that you successfully intubate the glottis and not the esophagus,” she said.
A smart strategy for aerosol containment is to use the most experienced laryngoscopist available. “If you are in a teaching program, ideally you’re using your most experienced resident, or you’re using fellows or attending physicians,” Dr. Lane-Fall said. “This is not the space for an inexperienced learner.”
Another way to make intubation faster and easier in COVID-19 patients is to use an intubation box, which features a plexiglass shield that enables the intubator to use their hands to get in the patient’s airway while being protected from viral droplets generated during intubation. The box can be cleaned after each use. Blueprints for an open source intubation box can be found at http://www.intubationbox.com.
Expert view on aerosol containment in COVID-19
“While there is a dearth of evidence from controlled trials, recommendations mentioned in this story are based on the best available evidence and are in agreement with guidelines from several expert groups,” said David L. Bowton, MD, FCCP, FCCM, of the department of anesthesiology at Wake Forest Baptist Health in Winston-Salem, NC. “The recommendation of Dr. Lane-Fall’s that is perhaps most controversial is the use of an intubation box. Multiple designs for these intubation/aerosol containment devices have been proposed, and the data supporting their ease of use and efficacy has been mixed [See Anaesthesia 2020;75(8):1014-21 and Anaesthesia. 2020. doi: 10.1111/anae.15188]. While bag valve mask ventilation should be avoided if possible, it may be a valuable rescue tool in the severely hypoxemic patient when used with two-person technique to achieve a tight seal and a PEEP valve and an HME over the exhalation port to minimize aerosol spread.
“It cannot be stressed enough that the most skilled individual should be tasked with intubating the patient and as few providers as possible [usually three] should be in the room and have donned full PPE. Negative pressure rooms should be used whenever feasible. Noninvasive ventilation appears safer from an infection control standpoint than initially feared and its use has become more widespread. However, noninvasive ventilation is not without its hazards, and Dr. Lane-Fall’s enumeration of the patient characteristics applicable to the selection of patients for noninvasive ventilation are extremely important. At our institution, the use of noninvasive ventilation and especially high-flow oxygen therapy has increased. Staff have become more comfortable with the donning and doffing of PPE.”
Dr. Lane-Fall reported having no financial disclosures.
Early on in the COVID-19 pandemic,
“We were concerned that, if we put them on high-flow nasal cannula or a noninvasive ventilation, that we would create aerosols that would then be a risk to clinicians,” Meghan Lane-Fall, MD, MSHP, FCCM, said at a Society for Critical Care Medicine virtual meeting called COVID-19: What’s Next. “However, we’ve gotten much more comfortable with infection control. We’ve gotten much more comfortable with controlling these aerosols, with making sure that our clinicians are protected with the appropriate protective equipment. We’ve also realized that patients who end up becoming intubated have really poor outcomes, so we’ve looked at our practice critically and tried to figure out how to support patients noninvasively when that’s possible.”
Respiratory support options
According to Dr. Lane-Fall, an associate professor of anesthesiology and critical care at the University of Pennsylvania, Philadelphia, there are two basic types of respiratory support in patients with moderate, severe, or critical COVID-19: noninvasive and invasive. Noninvasive options include CPAP or BiPAP which can be delivered through nasal pillows, masks, and helmets, as well as high-flow nasal oxygen. Invasive options include endotracheal intubation, tracheostomy, and extracorporeal membrane oxygenation (ECMO), usually the veno-venous (VV) form. “But it’s uncommon to need VV ECMO, even in patients who have critical COVID-19,” she said.
Factors that favor noninvasive ventilation include stably high oxygen requirements, normal mental status, ward location of care, and moderate to severe COVID-19. Factors that favor invasive ventilation include someone who’s deteriorating rapidly, “whose oxygen requirements aren’t stable or who is cardiopulmonary compromised,” said Dr. Lane-Fall, who is also co–medical director of the Trauma Surgery Intensive Care Unit at Penn Presbyterian Medical Center, also in Philadelphia. Other factors include the need for other invasive procedures such as surgery or if they have severe to critical COVID-19, “not just pneumonia, but [illness that’s] progressing into [acute respiratory distress syndrome],” she said.
Indications for urgent endotracheal intubation as opposed to giving a trial of noninvasive ventilation or high-flow nasal oxygen include altered mental status, inability to protect airway, copious amounts of secretions, a Glasgow Coma Scale score of less than 8, severe respiratory acidosis, hypopnea or apnea, shock, or an inability to tolerate noninvasive support. “This is a relative contraindication,” Dr. Lane-Fall said. “I’ve certainly talked people through the BiPAP mask or the helmet. If you tell a patient, ‘I don’t want to have to put in a breathing tube; I want to maintain you on this,’ often they’ll be able to work through it.”
Safety precautions
Aerosolizing procedures require attention to location, personnel, and equipment, including personal protective equipment (PPE), said Dr. Lane-Fall, who is an anesthesiologist by training. “When you are intubating someone, whether they have COVID-19 or not, you are sort of in the belly of the beast,” she said. “You are very exposed to secretions that occur at the time of endotracheal intubation. That’s why it’s important for us to have PPE and barriers to protect ourselves from potential exposure to aerosols during the care of patients with COVID-19.”
In February 2020, the non-for-profit Anesthesia Patient Safety Foundation published recommendations for airway management in patients with suspected COVID-19. A separate guidance was published the British Journal of Anaesthesiology based on emergency tracheal intubation in 202 patients with COVID-19 in Wuhan, China. “The idea here is that you want to intubate under controlled conditions,” said Dr. Lane-Fall, who is an author of the guidance. “You want to use the most experienced operator. You want to have full PPE, including an N95 mask, or something more protective like a powered air purifying respirator or an N95 mask with a face shield. You want the eyes, nose, and mouth of the operator covered completely.”
CPR, another aerosolizing procedure, requires vigilant safety precautions as well. “We struggled with this a little bit at our institution, because our inclination as intensivists when someone is pulseless is to run into the room and start chest compressions and to start resuscitation,” Dr. Lane-Fall said. “But the act of chest compression itself can create aerosols that can present risk to clinicians. We had to tell our clinicians that they have to put on PPE before they do CPR. The buzz phrase here is that there is no emergency in a pandemic. The idea here is that the good of that one patient is outweighed by the good of all the other patients that you could care for if you didn’t have COVID-19 as a clinician. So we have had to encourage our staff to put on PPE first before attending to patients first, even if it delays patient care. Once you have donned PPE, when you’re administering CPR, the number of staff should be minimized. You should have a compressor, and someone to relieve the compressor, and a code leader, someone tending to the airway. But in general, anyone who’s not actively involved should not be in the room.”
Risks during extubation
Extubation of COVID-19 patients is also an aerosolizing procedure not just because you’re pulling an endotracheal tube out of the airway but because coughing is a normal part of extubation. “We’ve had to be careful with how we approach extubation in COVID-19 patients,” Dr. Lane-Fall said. “Ideally you’re doing this in a negative pressure environment. We have also had to use full PPE, covering the eyes and face, and putting on a gown for precaution.”
Reintubation of COVID-19 patients is not uncommon. She and her colleagues at Penn Medicine created procedures for having intubators at the ready outside the room in case the patient were to decompensate clinically. “Another thing we learned is that it’s useful to do a leak test prior to extubation, because there may be airway edema related to prolonged intubation in these patients,” Dr. Lane-Fall said. “We found that, if a leak is absent on checking the cuff leak, the use of steroids for a day or 2 may help decrease airway edema. That improves the chances of extubation success.”
Strategies for aerosol containment
She concluded her remarks by reviewing airway control adjuncts and clinician safety. This includes physically isolating COVID-19 patients in negative pressure rooms and avoiding and minimizing aerosols, including the use of rapid intubation, “where we induce anesthesia for intubation but we don’t bag-mask the patient because that creates aerosols,” she said. The Anesthesia Patient Safety Foundation guidelines advocate for the use of video laryngoscopy so that you can visualize the glottis easily “and make sure that you successfully intubate the glottis and not the esophagus,” she said.
A smart strategy for aerosol containment is to use the most experienced laryngoscopist available. “If you are in a teaching program, ideally you’re using your most experienced resident, or you’re using fellows or attending physicians,” Dr. Lane-Fall said. “This is not the space for an inexperienced learner.”
Another way to make intubation faster and easier in COVID-19 patients is to use an intubation box, which features a plexiglass shield that enables the intubator to use their hands to get in the patient’s airway while being protected from viral droplets generated during intubation. The box can be cleaned after each use. Blueprints for an open source intubation box can be found at http://www.intubationbox.com.
Expert view on aerosol containment in COVID-19
“While there is a dearth of evidence from controlled trials, recommendations mentioned in this story are based on the best available evidence and are in agreement with guidelines from several expert groups,” said David L. Bowton, MD, FCCP, FCCM, of the department of anesthesiology at Wake Forest Baptist Health in Winston-Salem, NC. “The recommendation of Dr. Lane-Fall’s that is perhaps most controversial is the use of an intubation box. Multiple designs for these intubation/aerosol containment devices have been proposed, and the data supporting their ease of use and efficacy has been mixed [See Anaesthesia 2020;75(8):1014-21 and Anaesthesia. 2020. doi: 10.1111/anae.15188]. While bag valve mask ventilation should be avoided if possible, it may be a valuable rescue tool in the severely hypoxemic patient when used with two-person technique to achieve a tight seal and a PEEP valve and an HME over the exhalation port to minimize aerosol spread.
“It cannot be stressed enough that the most skilled individual should be tasked with intubating the patient and as few providers as possible [usually three] should be in the room and have donned full PPE. Negative pressure rooms should be used whenever feasible. Noninvasive ventilation appears safer from an infection control standpoint than initially feared and its use has become more widespread. However, noninvasive ventilation is not without its hazards, and Dr. Lane-Fall’s enumeration of the patient characteristics applicable to the selection of patients for noninvasive ventilation are extremely important. At our institution, the use of noninvasive ventilation and especially high-flow oxygen therapy has increased. Staff have become more comfortable with the donning and doffing of PPE.”
Dr. Lane-Fall reported having no financial disclosures.
FROM AN SCCM VIRTUAL MEETING