Pulmonary Health Hub

SAN ANTONIO – The recommended approach to evaluating suspected pulmonary embolism is “greatly underutilized” in the Veterans Health Administration system, Nancy Hsu, MD, said at the annual meeting of the American College of Chest Physicians.

Andrew Bowser/MDedge News

Most Veterans Affairs sites did not require incorporation of a clinical decision rule (CDR) and highly sensitive D-dimer prior to ordering CT pulmonary angiography (CTPA) for suspected pulmonary embolism (PE), according to results of a survey by Dr. Hsu and her coinvestigator, Guy Soo Hoo, MD.

While CTPA has become the imaging modality of choice for evaluating suspected PE, it is overused and potentially avoidable in one-third of cases, said Dr. Hsu, who is with the VA Greater Los Angeles Healthcare System.

“In the 10 years following the advent of CTPA use, there was a 14-fold increase in usage, but there was no change in mortality,” Dr. Hsu said. “This is consistent with overdiagnosis.”

Indiscriminate use of CTPA results in unnecessary and avoidable radiation exposure, contrast-related reactions, and treatment-related bleeding, Dr. Hsu said.

Dr. Hsu and Dr. Soo Hoo surveyed 606 individuals at 18 Veterans Integrated Service Networks (VISNs) and 143 medical centers. A total of 120 fully completed questionnaires were analyzed.

Most respondents (63%) were chiefs, and 80% had 11+ years of experience, Dr. Hsu reported.

Almost all respondents (85%) said CDR with or without D-dimer was not required before ordering a CTPA, survey results show, while only about 7% required both.

“A very small minority of [Veterans Integrated Service Networks], or geographic regions, contained even one hospital that adhered to the guidelines,” Dr. Hsu added.

Though further analysis was limited by sample size, the average CTPA yield for PE appeared to be higher when both components were used in the evaluation, according to Dr. Hsu, who noted an 11.9% yield for CDR plus D-dimer.

Use of CTPA appeared lower at sites with CDR and D-dimer testing, Dr. Hsu added.

These results suggest a need for further research to compare CTPA use and yield in sites that have the algorithm in place, Dr. Hsu told attendees at the meeting.

Adherence to the CDR plus D-dimer diagnostic strategy is “modest at best” despite being a Top 5 Choosing Wisely recommendation in pulmonary medicine, Dr. Hsu told attendees.

The biggest barrier to optimal practice may be the fear of having a patient who “falls through the cracks” based on false-negative CDR and D-dimer data, according to Dr. Hsu.

On the other hand, judicious use of CTPA likely avoids negative sequelae related to radiation, contrast exposure, and treatment-related bleeding, Dr. Hsu said.

“It’s all about balancing risks and benefits,” she said from the podium in a discussion of the study results.

Dr. Hsu and Dr. Soo Hoo disclosed that they had no relationships relevant to their research.

SOURCE: Hsu N et al. CHEST. 2018 Oct. doi: 10.1016/j.chest.2018.08.937

SAN ANTONIO – The recommended approach to evaluating suspected pulmonary embolism is “greatly underutilized” in the Veterans Health Administration system, Nancy Hsu, MD, said at the annual meeting of the American College of Chest Physicians.

Andrew Bowser/MDedge News

Most Veterans Affairs sites did not require incorporation of a clinical decision rule (CDR) and highly sensitive D-dimer prior to ordering CT pulmonary angiography (CTPA) for suspected pulmonary embolism (PE), according to results of a survey by Dr. Hsu and her coinvestigator, Guy Soo Hoo, MD.

While CTPA has become the imaging modality of choice for evaluating suspected PE, it is overused and potentially avoidable in one-third of cases, said Dr. Hsu, who is with the VA Greater Los Angeles Healthcare System.

“In the 10 years following the advent of CTPA use, there was a 14-fold increase in usage, but there was no change in mortality,” Dr. Hsu said. “This is consistent with overdiagnosis.”

Indiscriminate use of CTPA results in unnecessary and avoidable radiation exposure, contrast-related reactions, and treatment-related bleeding, Dr. Hsu said.

Dr. Hsu and Dr. Soo Hoo surveyed 606 individuals at 18 Veterans Integrated Service Networks (VISNs) and 143 medical centers. A total of 120 fully completed questionnaires were analyzed.

Most respondents (63%) were chiefs, and 80% had 11+ years of experience, Dr. Hsu reported.

Almost all respondents (85%) said CDR with or without D-dimer was not required before ordering a CTPA, survey results show, while only about 7% required both.

“A very small minority of [Veterans Integrated Service Networks], or geographic regions, contained even one hospital that adhered to the guidelines,” Dr. Hsu added.

Though further analysis was limited by sample size, the average CTPA yield for PE appeared to be higher when both components were used in the evaluation, according to Dr. Hsu, who noted an 11.9% yield for CDR plus D-dimer.

Use of CTPA appeared lower at sites with CDR and D-dimer testing, Dr. Hsu added.

These results suggest a need for further research to compare CTPA use and yield in sites that have the algorithm in place, Dr. Hsu told attendees at the meeting.

Adherence to the CDR plus D-dimer diagnostic strategy is “modest at best” despite being a Top 5 Choosing Wisely recommendation in pulmonary medicine, Dr. Hsu told attendees.

The biggest barrier to optimal practice may be the fear of having a patient who “falls through the cracks” based on false-negative CDR and D-dimer data, according to Dr. Hsu.

On the other hand, judicious use of CTPA likely avoids negative sequelae related to radiation, contrast exposure, and treatment-related bleeding, Dr. Hsu said.

“It’s all about balancing risks and benefits,” she said from the podium in a discussion of the study results.

Dr. Hsu and Dr. Soo Hoo disclosed that they had no relationships relevant to their research.

SOURCE: Hsu N et al. CHEST. 2018 Oct. doi: 10.1016/j.chest.2018.08.937

SAN ANTONIO – The recommended approach to evaluating suspected pulmonary embolism is “greatly underutilized” in the Veterans Health Administration system, Nancy Hsu, MD, said at the annual meeting of the American College of Chest Physicians.

Andrew Bowser/MDedge News

Most Veterans Affairs sites did not require incorporation of a clinical decision rule (CDR) and highly sensitive D-dimer prior to ordering CT pulmonary angiography (CTPA) for suspected pulmonary embolism (PE), according to results of a survey by Dr. Hsu and her coinvestigator, Guy Soo Hoo, MD.

While CTPA has become the imaging modality of choice for evaluating suspected PE, it is overused and potentially avoidable in one-third of cases, said Dr. Hsu, who is with the VA Greater Los Angeles Healthcare System.

“In the 10 years following the advent of CTPA use, there was a 14-fold increase in usage, but there was no change in mortality,” Dr. Hsu said. “This is consistent with overdiagnosis.”

Indiscriminate use of CTPA results in unnecessary and avoidable radiation exposure, contrast-related reactions, and treatment-related bleeding, Dr. Hsu said.

Dr. Hsu and Dr. Soo Hoo surveyed 606 individuals at 18 Veterans Integrated Service Networks (VISNs) and 143 medical centers. A total of 120 fully completed questionnaires were analyzed.

Most respondents (63%) were chiefs, and 80% had 11+ years of experience, Dr. Hsu reported.

Almost all respondents (85%) said CDR with or without D-dimer was not required before ordering a CTPA, survey results show, while only about 7% required both.

“A very small minority of [Veterans Integrated Service Networks], or geographic regions, contained even one hospital that adhered to the guidelines,” Dr. Hsu added.

Though further analysis was limited by sample size, the average CTPA yield for PE appeared to be higher when both components were used in the evaluation, according to Dr. Hsu, who noted an 11.9% yield for CDR plus D-dimer.

Use of CTPA appeared lower at sites with CDR and D-dimer testing, Dr. Hsu added.

These results suggest a need for further research to compare CTPA use and yield in sites that have the algorithm in place, Dr. Hsu told attendees at the meeting.

Adherence to the CDR plus D-dimer diagnostic strategy is “modest at best” despite being a Top 5 Choosing Wisely recommendation in pulmonary medicine, Dr. Hsu told attendees.

The biggest barrier to optimal practice may be the fear of having a patient who “falls through the cracks” based on false-negative CDR and D-dimer data, according to Dr. Hsu.

On the other hand, judicious use of CTPA likely avoids negative sequelae related to radiation, contrast exposure, and treatment-related bleeding, Dr. Hsu said.

“It’s all about balancing risks and benefits,” she said from the podium in a discussion of the study results.

Dr. Hsu and Dr. Soo Hoo disclosed that they had no relationships relevant to their research.

SOURCE: Hsu N et al. CHEST. 2018 Oct. doi: 10.1016/j.chest.2018.08.937

SAN ANTONIO – Regardless of COPD patients’ bronchodilator reversibility at baseline, triple therapy with fluticasone furoate, umeclidinium, and vilanterol (FF/UMEC/VI) significantly reduced the exacerbation rate versus dual therapies, according to a recent retrospective analysis of a randomized, double-blind study.

Andrew D. Bowser/MDedge News

FF/UMEC/VI, a triple-therapy combination of an inhaled corticosteroid, long-acting muscarinic antagonist, and long-acting beta2 agonist (ICS/LAMA/LABA), was superior to both LAMA/LABA and ICS/LABA combinations in reducing the rate of moderate to severe exacerbation and lung function, the analysis showed.

The ICS/LAMA/LABA combination, compared with LAMA/LABA, also significantly reduced the rate of severe exacerbations and time to first moderate to severe exacerbations in both reversible and nonreversible patients, Robert Wise, MD, FCCP, of Johns Hopkins University, Baltimore, said at the annual meeting of the American College of Chest Physicians.

The analysis was based on data from IMPACT, an international, randomized, 52-week study that included more than 10,000 patients with symptomatic COPD, of whom 18% demonstrated reversibility at screening.

“The results across both reversibility subgroups are consistent with those observed in the intention-to-treat or overall study population and show a similar benefit-to-risk profile of the triple therapy across different subtypes based on bronchodilator reversibility,” Dr. Wise told attendees in a podium presentation.

Reversibility was defined as a difference between pre- and postalbuterol assessment of FEV₁ of equal to or greater than 12% and equal to or greater than 200 mL at screening, Dr. Wise said.

Reversible patients had a 40% reduction in the rate of moderate to severe exacerbations for FF/UMEC/VI versus UMEC/VI, while nonreversible patients had a 21% reduction, according to data reported in the meeting abstract.

Severe exacerbation rates dropped by 44% and 31%, respectively, in the reversible and nonreversible patients for triple versus dual therapy, he added.

Triple therapy reduced time to first moderate to severe exacerbation versus dual therapy by 25.6% in reversible and 13.6% in nonreversible COPD patients, the data showed.

The FF/UMEC/VI combination also demonstrated improvements versus UMEC/VI in time to first severe exacerbation for both the reversible and nonreversible groups, as well as improved quality of life in both groups as measured by the St. George Respiratory Questionnaire (SGRQ) in both groups.

Results were somewhat different when comparing the FF/UMEC/VI combination with the FF/VI – the ICS/LABA combination – in this post hoc analysis.

Triple therapy did reduce moderate to severe exacerbations and improved lung function regardless of baseline reversibility. However, for the reversible patients, ICS/LAMA/LABA versus ICS/LABA did not significantly reduce risk specifically of severe exacerbations, time to first moderate to severe exacerbation, or increase odds of being an SGRQ responder, Dr. Wise said.

Nonetheless, these findings taken together imply that this ICS/LAMA/LABA combination provides clinically relevant improvements versus dual therapy across a range of important outcomes regardless of baseline reversibility, according to Dr. Wise and colleagues.

Dr. Wise and coinvestigators provided disclosures related to Boehringer Ingelheim, BTG, Chiesi, GlaxoSmithKline, Mereo, Novartis, PneumRx, Prometic, and Pulmonx.

SOURCE: Wise R et al. Chest. 2018 Oct. doi: 10.1016/j.chest.2018.08.662

SAN ANTONIO – Regardless of COPD patients’ bronchodilator reversibility at baseline, triple therapy with fluticasone furoate, umeclidinium, and vilanterol (FF/UMEC/VI) significantly reduced the exacerbation rate versus dual therapies, according to a recent retrospective analysis of a randomized, double-blind study.

Andrew D. Bowser/MDedge News

FF/UMEC/VI, a triple-therapy combination of an inhaled corticosteroid, long-acting muscarinic antagonist, and long-acting beta2 agonist (ICS/LAMA/LABA), was superior to both LAMA/LABA and ICS/LABA combinations in reducing the rate of moderate to severe exacerbation and lung function, the analysis showed.

The ICS/LAMA/LABA combination, compared with LAMA/LABA, also significantly reduced the rate of severe exacerbations and time to first moderate to severe exacerbations in both reversible and nonreversible patients, Robert Wise, MD, FCCP, of Johns Hopkins University, Baltimore, said at the annual meeting of the American College of Chest Physicians.

The analysis was based on data from IMPACT, an international, randomized, 52-week study that included more than 10,000 patients with symptomatic COPD, of whom 18% demonstrated reversibility at screening.

“The results across both reversibility subgroups are consistent with those observed in the intention-to-treat or overall study population and show a similar benefit-to-risk profile of the triple therapy across different subtypes based on bronchodilator reversibility,” Dr. Wise told attendees in a podium presentation.

Reversibility was defined as a difference between pre- and postalbuterol assessment of FEV₁ of equal to or greater than 12% and equal to or greater than 200 mL at screening, Dr. Wise said.

Reversible patients had a 40% reduction in the rate of moderate to severe exacerbations for FF/UMEC/VI versus UMEC/VI, while nonreversible patients had a 21% reduction, according to data reported in the meeting abstract.

Severe exacerbation rates dropped by 44% and 31%, respectively, in the reversible and nonreversible patients for triple versus dual therapy, he added.

Triple therapy reduced time to first moderate to severe exacerbation versus dual therapy by 25.6% in reversible and 13.6% in nonreversible COPD patients, the data showed.

The FF/UMEC/VI combination also demonstrated improvements versus UMEC/VI in time to first severe exacerbation for both the reversible and nonreversible groups, as well as improved quality of life in both groups as measured by the St. George Respiratory Questionnaire (SGRQ) in both groups.

Results were somewhat different when comparing the FF/UMEC/VI combination with the FF/VI – the ICS/LABA combination – in this post hoc analysis.

Triple therapy did reduce moderate to severe exacerbations and improved lung function regardless of baseline reversibility. However, for the reversible patients, ICS/LAMA/LABA versus ICS/LABA did not significantly reduce risk specifically of severe exacerbations, time to first moderate to severe exacerbation, or increase odds of being an SGRQ responder, Dr. Wise said.

Nonetheless, these findings taken together imply that this ICS/LAMA/LABA combination provides clinically relevant improvements versus dual therapy across a range of important outcomes regardless of baseline reversibility, according to Dr. Wise and colleagues.

Dr. Wise and coinvestigators provided disclosures related to Boehringer Ingelheim, BTG, Chiesi, GlaxoSmithKline, Mereo, Novartis, PneumRx, Prometic, and Pulmonx.

SOURCE: Wise R et al. Chest. 2018 Oct. doi: 10.1016/j.chest.2018.08.662

SAN ANTONIO – Regardless of COPD patients’ bronchodilator reversibility at baseline, triple therapy with fluticasone furoate, umeclidinium, and vilanterol (FF/UMEC/VI) significantly reduced the exacerbation rate versus dual therapies, according to a recent retrospective analysis of a randomized, double-blind study.

Andrew D. Bowser/MDedge News

FF/UMEC/VI, a triple-therapy combination of an inhaled corticosteroid, long-acting muscarinic antagonist, and long-acting beta2 agonist (ICS/LAMA/LABA), was superior to both LAMA/LABA and ICS/LABA combinations in reducing the rate of moderate to severe exacerbation and lung function, the analysis showed.

The ICS/LAMA/LABA combination, compared with LAMA/LABA, also significantly reduced the rate of severe exacerbations and time to first moderate to severe exacerbations in both reversible and nonreversible patients, Robert Wise, MD, FCCP, of Johns Hopkins University, Baltimore, said at the annual meeting of the American College of Chest Physicians.

The analysis was based on data from IMPACT, an international, randomized, 52-week study that included more than 10,000 patients with symptomatic COPD, of whom 18% demonstrated reversibility at screening.

“The results across both reversibility subgroups are consistent with those observed in the intention-to-treat or overall study population and show a similar benefit-to-risk profile of the triple therapy across different subtypes based on bronchodilator reversibility,” Dr. Wise told attendees in a podium presentation.

Reversibility was defined as a difference between pre- and postalbuterol assessment of FEV₁ of equal to or greater than 12% and equal to or greater than 200 mL at screening, Dr. Wise said.

Reversible patients had a 40% reduction in the rate of moderate to severe exacerbations for FF/UMEC/VI versus UMEC/VI, while nonreversible patients had a 21% reduction, according to data reported in the meeting abstract.

Severe exacerbation rates dropped by 44% and 31%, respectively, in the reversible and nonreversible patients for triple versus dual therapy, he added.

Triple therapy reduced time to first moderate to severe exacerbation versus dual therapy by 25.6% in reversible and 13.6% in nonreversible COPD patients, the data showed.

The FF/UMEC/VI combination also demonstrated improvements versus UMEC/VI in time to first severe exacerbation for both the reversible and nonreversible groups, as well as improved quality of life in both groups as measured by the St. George Respiratory Questionnaire (SGRQ) in both groups.

Results were somewhat different when comparing the FF/UMEC/VI combination with the FF/VI – the ICS/LABA combination – in this post hoc analysis.

Triple therapy did reduce moderate to severe exacerbations and improved lung function regardless of baseline reversibility. However, for the reversible patients, ICS/LAMA/LABA versus ICS/LABA did not significantly reduce risk specifically of severe exacerbations, time to first moderate to severe exacerbation, or increase odds of being an SGRQ responder, Dr. Wise said.

Nonetheless, these findings taken together imply that this ICS/LAMA/LABA combination provides clinically relevant improvements versus dual therapy across a range of important outcomes regardless of baseline reversibility, according to Dr. Wise and colleagues.

Dr. Wise and coinvestigators provided disclosures related to Boehringer Ingelheim, BTG, Chiesi, GlaxoSmithKline, Mereo, Novartis, PneumRx, Prometic, and Pulmonx.

SOURCE: Wise R et al. Chest. 2018 Oct. doi: 10.1016/j.chest.2018.08.662

SAN ANTONIO – It may not always be necessary to tell parents of children with asthma to get rid of the household pet, a recent study suggests.

Andrew D. Bowser/MDedge News

Children with uncontrolled asthma who were provided with guideline-appropriate care had significant improvements in a variety of asthma measures, regardless of whether parents reported pets or smoking at home, according to results of the 4-year, 471-patient prospective study.

Those results suggest that clinicians should be working to make sure the guidelines are being closely followed before, for example, telling parents they need to consider getting rid of the family pet, said Shahid Sheikh, MD, FCCP, of Nationwide Children’s Hospital, Columbus, Ohio.

“As the guidelines still work, we need to focus and develop the connections with the family to make sure the patients are on the right treatment, and that they’re getting the medications,” Dr. Sheikh said in an interview at the annual meeting of the American College of Chest Physicians.

The prospective cohort study by Dr. Sheikh and his colleagues, presented in a poster session, included children referred to a pediatric asthma center with the diagnosis of uncontrolled asthma. All patients received asthma care according to National Asthma Education and Prevention Program Expert Panel Report 3 guidelines.

Medications were changed as needed, and the asthma action plan was revised accordingly and reviewed with the family at each visit, Dr. Sheikh reported. After a baseline evaluation, clinic visits for the study occurred at 3 months, 6 months, and then at 1, 2, 3, and 4 years.

Out of 471 patients, 258 had pets, and 125 were in homes where smoking took place, according to parent reports.

Asthma control test scores were 15.1 at baseline for children in no-pet households, and 16.5 for those with pets; by the 3-month visit, scores increased to 20.1 and 20.3 for the no-pet and pet groups, and at 4 years, those scores had edged up to 22.2 and 22.7 (P = .371), Dr. Sheikh reported.

Similarly, after care was started, there was no significant difference between the no-pet and pet groups in mean percent of predicted forced expiratory volume in 1 second (FEV₁₎, wheezing, nighttime cough, albuterol use, and other factors over the 4 years of follow-up, he said.

Likewise, looking at the data by nonsmoking vs. smoking households, asthma control test scores at baseline were 16.1 and 15.1, respectively, and at 4 years they were 22.2 and 22.3 (P = .078), with a similar lack of difference in predicted FEV₁, wheezing, and all other factors evaluated.

Getting rid of the family pet may need to be a consideration for some families, but based on these data, that might not be necessary for the majority of families, Dr. Sheikh said in the interview.

“On the other hand, we are not saying that if you are smoking, you should continue to smoke,” he added.

“What we are saying is that smoking is bad, but if your child is not getting better, I don’t want to blame your smoking for it. There may be something else which may be more important than smoking which we are missing – the child may not be getting the medicine, or may not be on the right medicine, or may have other comorbidities.”

Dr. Sheikh and his coinvestigators disclosed that they had no relationships relevant to the study.

SOURCE: Sheikh S et al. CHEST 2018. doi: 10.1016/j.chest.2018.08.666.

SAN ANTONIO – It may not always be necessary to tell parents of children with asthma to get rid of the household pet, a recent study suggests.

Andrew D. Bowser/MDedge News

Children with uncontrolled asthma who were provided with guideline-appropriate care had significant improvements in a variety of asthma measures, regardless of whether parents reported pets or smoking at home, according to results of the 4-year, 471-patient prospective study.

Those results suggest that clinicians should be working to make sure the guidelines are being closely followed before, for example, telling parents they need to consider getting rid of the family pet, said Shahid Sheikh, MD, FCCP, of Nationwide Children’s Hospital, Columbus, Ohio.

“As the guidelines still work, we need to focus and develop the connections with the family to make sure the patients are on the right treatment, and that they’re getting the medications,” Dr. Sheikh said in an interview at the annual meeting of the American College of Chest Physicians.

The prospective cohort study by Dr. Sheikh and his colleagues, presented in a poster session, included children referred to a pediatric asthma center with the diagnosis of uncontrolled asthma. All patients received asthma care according to National Asthma Education and Prevention Program Expert Panel Report 3 guidelines.

Medications were changed as needed, and the asthma action plan was revised accordingly and reviewed with the family at each visit, Dr. Sheikh reported. After a baseline evaluation, clinic visits for the study occurred at 3 months, 6 months, and then at 1, 2, 3, and 4 years.

Out of 471 patients, 258 had pets, and 125 were in homes where smoking took place, according to parent reports.

Asthma control test scores were 15.1 at baseline for children in no-pet households, and 16.5 for those with pets; by the 3-month visit, scores increased to 20.1 and 20.3 for the no-pet and pet groups, and at 4 years, those scores had edged up to 22.2 and 22.7 (P = .371), Dr. Sheikh reported.

Similarly, after care was started, there was no significant difference between the no-pet and pet groups in mean percent of predicted forced expiratory volume in 1 second (FEV₁₎, wheezing, nighttime cough, albuterol use, and other factors over the 4 years of follow-up, he said.

Likewise, looking at the data by nonsmoking vs. smoking households, asthma control test scores at baseline were 16.1 and 15.1, respectively, and at 4 years they were 22.2 and 22.3 (P = .078), with a similar lack of difference in predicted FEV₁, wheezing, and all other factors evaluated.

Getting rid of the family pet may need to be a consideration for some families, but based on these data, that might not be necessary for the majority of families, Dr. Sheikh said in the interview.

“On the other hand, we are not saying that if you are smoking, you should continue to smoke,” he added.

“What we are saying is that smoking is bad, but if your child is not getting better, I don’t want to blame your smoking for it. There may be something else which may be more important than smoking which we are missing – the child may not be getting the medicine, or may not be on the right medicine, or may have other comorbidities.”

Dr. Sheikh and his coinvestigators disclosed that they had no relationships relevant to the study.

SOURCE: Sheikh S et al. CHEST 2018. doi: 10.1016/j.chest.2018.08.666.

SAN ANTONIO – It may not always be necessary to tell parents of children with asthma to get rid of the household pet, a recent study suggests.

Andrew D. Bowser/MDedge News

Children with uncontrolled asthma who were provided with guideline-appropriate care had significant improvements in a variety of asthma measures, regardless of whether parents reported pets or smoking at home, according to results of the 4-year, 471-patient prospective study.

Those results suggest that clinicians should be working to make sure the guidelines are being closely followed before, for example, telling parents they need to consider getting rid of the family pet, said Shahid Sheikh, MD, FCCP, of Nationwide Children’s Hospital, Columbus, Ohio.

“As the guidelines still work, we need to focus and develop the connections with the family to make sure the patients are on the right treatment, and that they’re getting the medications,” Dr. Sheikh said in an interview at the annual meeting of the American College of Chest Physicians.

The prospective cohort study by Dr. Sheikh and his colleagues, presented in a poster session, included children referred to a pediatric asthma center with the diagnosis of uncontrolled asthma. All patients received asthma care according to National Asthma Education and Prevention Program Expert Panel Report 3 guidelines.

Medications were changed as needed, and the asthma action plan was revised accordingly and reviewed with the family at each visit, Dr. Sheikh reported. After a baseline evaluation, clinic visits for the study occurred at 3 months, 6 months, and then at 1, 2, 3, and 4 years.

Out of 471 patients, 258 had pets, and 125 were in homes where smoking took place, according to parent reports.

Asthma control test scores were 15.1 at baseline for children in no-pet households, and 16.5 for those with pets; by the 3-month visit, scores increased to 20.1 and 20.3 for the no-pet and pet groups, and at 4 years, those scores had edged up to 22.2 and 22.7 (P = .371), Dr. Sheikh reported.

Similarly, after care was started, there was no significant difference between the no-pet and pet groups in mean percent of predicted forced expiratory volume in 1 second (FEV₁₎, wheezing, nighttime cough, albuterol use, and other factors over the 4 years of follow-up, he said.

Likewise, looking at the data by nonsmoking vs. smoking households, asthma control test scores at baseline were 16.1 and 15.1, respectively, and at 4 years they were 22.2 and 22.3 (P = .078), with a similar lack of difference in predicted FEV₁, wheezing, and all other factors evaluated.

Getting rid of the family pet may need to be a consideration for some families, but based on these data, that might not be necessary for the majority of families, Dr. Sheikh said in the interview.

“On the other hand, we are not saying that if you are smoking, you should continue to smoke,” he added.

“What we are saying is that smoking is bad, but if your child is not getting better, I don’t want to blame your smoking for it. There may be something else which may be more important than smoking which we are missing – the child may not be getting the medicine, or may not be on the right medicine, or may have other comorbidities.”

Dr. Sheikh and his coinvestigators disclosed that they had no relationships relevant to the study.

SOURCE: Sheikh S et al. CHEST 2018. doi: 10.1016/j.chest.2018.08.666.

SAN FRANCISCO – An adjuvanted trivalent flu vaccine cuts the risk of hospitalizations in nursing home residents by about 6%, according to a new study presented at an annual scientific meeting on infectious diseases.

“It’s one thing to say you have a more immunogenic vaccine, it’s another thing to be able to say it offers clinical benefit, especially in the oldest old and the frailest frail,” says Stefan Gravenstein, MD, professor of medicine and health services, policy and practice at the Brown University School of Public Health, Providence, R.I. Dr. Gravenstein presented a poster outlying a randomized, clinical trial of the Fluad vaccine in nursing homes.

The study randomized the nursing homes so that some facilities would offer Fluad as part of their standard of care. The design helped address the problem of consent. Any clinical trial that requires individual consent would likely exclude many of the frailest patients, leading to an unrepresentative sample. “So if you want to have a generalizable result, you’d like to have it applied to the population the way you would in the real world, so randomizing the nursing homes rather than the people makes a lot of sense,” said Dr. Gravenstein.

Dr. Gravenstein chose to test the vaccine in nursing home residents, hoping to see a signal in a population in which flu complications are more common. “If you can get a difference in a nursing home population, that’s clinically important, that gives you hope that you can see it in all the other populations, too,” he said.

SOURCE: Gravenstein S et al. IDWeek 2018, Abstract 996.

SAN FRANCISCO – An adjuvanted trivalent flu vaccine cuts the risk of hospitalizations in nursing home residents by about 6%, according to a new study presented at an annual scientific meeting on infectious diseases.

“It’s one thing to say you have a more immunogenic vaccine, it’s another thing to be able to say it offers clinical benefit, especially in the oldest old and the frailest frail,” says Stefan Gravenstein, MD, professor of medicine and health services, policy and practice at the Brown University School of Public Health, Providence, R.I. Dr. Gravenstein presented a poster outlying a randomized, clinical trial of the Fluad vaccine in nursing homes.

The study randomized the nursing homes so that some facilities would offer Fluad as part of their standard of care. The design helped address the problem of consent. Any clinical trial that requires individual consent would likely exclude many of the frailest patients, leading to an unrepresentative sample. “So if you want to have a generalizable result, you’d like to have it applied to the population the way you would in the real world, so randomizing the nursing homes rather than the people makes a lot of sense,” said Dr. Gravenstein.

Dr. Gravenstein chose to test the vaccine in nursing home residents, hoping to see a signal in a population in which flu complications are more common. “If you can get a difference in a nursing home population, that’s clinically important, that gives you hope that you can see it in all the other populations, too,” he said.

SOURCE: Gravenstein S et al. IDWeek 2018, Abstract 996.

SAN FRANCISCO – An adjuvanted trivalent flu vaccine cuts the risk of hospitalizations in nursing home residents by about 6%, according to a new study presented at an annual scientific meeting on infectious diseases.

“It’s one thing to say you have a more immunogenic vaccine, it’s another thing to be able to say it offers clinical benefit, especially in the oldest old and the frailest frail,” says Stefan Gravenstein, MD, professor of medicine and health services, policy and practice at the Brown University School of Public Health, Providence, R.I. Dr. Gravenstein presented a poster outlying a randomized, clinical trial of the Fluad vaccine in nursing homes.

The study randomized the nursing homes so that some facilities would offer Fluad as part of their standard of care. The design helped address the problem of consent. Any clinical trial that requires individual consent would likely exclude many of the frailest patients, leading to an unrepresentative sample. “So if you want to have a generalizable result, you’d like to have it applied to the population the way you would in the real world, so randomizing the nursing homes rather than the people makes a lot of sense,” said Dr. Gravenstein.

Dr. Gravenstein chose to test the vaccine in nursing home residents, hoping to see a signal in a population in which flu complications are more common. “If you can get a difference in a nursing home population, that’s clinically important, that gives you hope that you can see it in all the other populations, too,” he said.

SOURCE: Gravenstein S et al. IDWeek 2018, Abstract 996.

SAN ANTONIO – Patients with pulmonary embolism who were obese paradoxically had a lower mortality risk, compared with those who are not obese, according to results of a retrospective analysis covering 13 years and nearly 2 million PE discharges.

Andrew D. Bowser/MDedge News

The obese patients in the analysis had a lower mortality risk, despite receiving more thrombolytics and mechanical intubation, said investigator Zubair Khan, MD, an internal medicine resident at the University of Toledo (Ohio) Medical Center.

“Surprisingly, the mortality of PE was significantly less in obese patients,” Dr. Khan said in a podium presentation at the annual meeting of the American College of Chest Physicians. “When we initiated the study, we did not expect this result.”

The association between obesity and lower mortality, sometimes called the “obesity paradox,” has been observed in studies of other chronic health conditions including stable heart failure, coronary artery disease, unstable angina, MI, and also in some PE studies, Dr. Khan said.

The study by Dr. Khan and his colleagues, based on the National Inpatient Sample (NIS) database, included adults with a primary discharge diagnosis of PE between 2002 and 2014. They included 1,959,018 PE discharges, of which 312,770 (16%) had an underlying obesity diagnosis.

Obese PE patients had more risk factors and more severe disease but had an overall mortality of 2.2%, compared with 3.7% in PE patients without obesity (P less than .001), Dr. Khan reported.

Hypertension was significantly more prevalent in the obese PE patients (65% vs. 50.5%; P less than .001), as was chronic lung disease and chronic liver disease, he noted in his presentation.

Obese patients more often received thrombolytics (3.6% vs. 1.9%; P less than .001) and mechanical ventilation (5.8% vs. 4%; P less than .001), and more frequently had cardiogenic shock (0.65% vs. 0.45%; P less than .001), he said.

The obese PE patients were more often female, black, and younger than 65 years of age, it was reported.

Notably, the prevalence of obesity in PE patients more than doubled over the course of the study period, from 10.2% in 2002 to 22.6% in 2014, Dr. Khan added.

The paradoxically lower mortality in obese patients might be explained by increased levels of endocannabinoids, which have shown protective effects in rat and mouse studies, Dr. Khan told attendees at the meeting.

“I think it’s a rich area for more and further research, especially in basic science,” Dr. Khan said.

Dr. Khan and his coauthors disclosed that they had no relationships relevant to the study.
 

SOURCE: Khan Z et al. CHEST. 2018 Oct. doi: 10.1016/j.chest.2018.08.919.

SAN ANTONIO – Patients with pulmonary embolism who were obese paradoxically had a lower mortality risk, compared with those who are not obese, according to results of a retrospective analysis covering 13 years and nearly 2 million PE discharges.

Andrew D. Bowser/MDedge News

The obese patients in the analysis had a lower mortality risk, despite receiving more thrombolytics and mechanical intubation, said investigator Zubair Khan, MD, an internal medicine resident at the University of Toledo (Ohio) Medical Center.

“Surprisingly, the mortality of PE was significantly less in obese patients,” Dr. Khan said in a podium presentation at the annual meeting of the American College of Chest Physicians. “When we initiated the study, we did not expect this result.”

The association between obesity and lower mortality, sometimes called the “obesity paradox,” has been observed in studies of other chronic health conditions including stable heart failure, coronary artery disease, unstable angina, MI, and also in some PE studies, Dr. Khan said.

The study by Dr. Khan and his colleagues, based on the National Inpatient Sample (NIS) database, included adults with a primary discharge diagnosis of PE between 2002 and 2014. They included 1,959,018 PE discharges, of which 312,770 (16%) had an underlying obesity diagnosis.

Obese PE patients had more risk factors and more severe disease but had an overall mortality of 2.2%, compared with 3.7% in PE patients without obesity (P less than .001), Dr. Khan reported.

Hypertension was significantly more prevalent in the obese PE patients (65% vs. 50.5%; P less than .001), as was chronic lung disease and chronic liver disease, he noted in his presentation.

Obese patients more often received thrombolytics (3.6% vs. 1.9%; P less than .001) and mechanical ventilation (5.8% vs. 4%; P less than .001), and more frequently had cardiogenic shock (0.65% vs. 0.45%; P less than .001), he said.

The obese PE patients were more often female, black, and younger than 65 years of age, it was reported.

Notably, the prevalence of obesity in PE patients more than doubled over the course of the study period, from 10.2% in 2002 to 22.6% in 2014, Dr. Khan added.

The paradoxically lower mortality in obese patients might be explained by increased levels of endocannabinoids, which have shown protective effects in rat and mouse studies, Dr. Khan told attendees at the meeting.

“I think it’s a rich area for more and further research, especially in basic science,” Dr. Khan said.

Dr. Khan and his coauthors disclosed that they had no relationships relevant to the study.
 

SOURCE: Khan Z et al. CHEST. 2018 Oct. doi: 10.1016/j.chest.2018.08.919.

SAN ANTONIO – Patients with pulmonary embolism who were obese paradoxically had a lower mortality risk, compared with those who are not obese, according to results of a retrospective analysis covering 13 years and nearly 2 million PE discharges.

Andrew D. Bowser/MDedge News

The obese patients in the analysis had a lower mortality risk, despite receiving more thrombolytics and mechanical intubation, said investigator Zubair Khan, MD, an internal medicine resident at the University of Toledo (Ohio) Medical Center.

“Surprisingly, the mortality of PE was significantly less in obese patients,” Dr. Khan said in a podium presentation at the annual meeting of the American College of Chest Physicians. “When we initiated the study, we did not expect this result.”

The association between obesity and lower mortality, sometimes called the “obesity paradox,” has been observed in studies of other chronic health conditions including stable heart failure, coronary artery disease, unstable angina, MI, and also in some PE studies, Dr. Khan said.

The study by Dr. Khan and his colleagues, based on the National Inpatient Sample (NIS) database, included adults with a primary discharge diagnosis of PE between 2002 and 2014. They included 1,959,018 PE discharges, of which 312,770 (16%) had an underlying obesity diagnosis.

Obese PE patients had more risk factors and more severe disease but had an overall mortality of 2.2%, compared with 3.7% in PE patients without obesity (P less than .001), Dr. Khan reported.

Hypertension was significantly more prevalent in the obese PE patients (65% vs. 50.5%; P less than .001), as was chronic lung disease and chronic liver disease, he noted in his presentation.

Obese patients more often received thrombolytics (3.6% vs. 1.9%; P less than .001) and mechanical ventilation (5.8% vs. 4%; P less than .001), and more frequently had cardiogenic shock (0.65% vs. 0.45%; P less than .001), he said.

The obese PE patients were more often female, black, and younger than 65 years of age, it was reported.

Notably, the prevalence of obesity in PE patients more than doubled over the course of the study period, from 10.2% in 2002 to 22.6% in 2014, Dr. Khan added.

The paradoxically lower mortality in obese patients might be explained by increased levels of endocannabinoids, which have shown protective effects in rat and mouse studies, Dr. Khan told attendees at the meeting.

“I think it’s a rich area for more and further research, especially in basic science,” Dr. Khan said.

Dr. Khan and his coauthors disclosed that they had no relationships relevant to the study.
 

SOURCE: Khan Z et al. CHEST. 2018 Oct. doi: 10.1016/j.chest.2018.08.919.

Vidyard Video

SAN ANTONIO – For patients with neuromuscular disorders, the stress and danger from natural disasters such Hurricane Harvey are best avoided by leaving the area as soon as possible, according to Venessa A. Holland, MD, FCCP, of Houston Methodist Hospital.

While none of Dr. Holland’s patients died during this catastrophic hurricane, there were considerable challenges, particularly for those trapped by the many trillion gallons of water fell on Texas and Louisiana in August 2017. Houston was flooded, and hospitals and other medical facilities were hit hard. The vulnerability of ventilator-dependent and incapacitated patients was of particular concern.

In one case, a ventilator-dependent patient trapped by flood waters at home became diaphoretic and hypotensive. The patient was treated with electrolyte-replacement sports drink administered via percutaneous endoscopic gastrostomy (PEG) tube, Dr. Holland told attendees at the annual meeting of the American College of Chest Physicians.

Dr. Holland spoke in a video interview about how neuromuscular disorder patients fared during Hurricane Harvey and her recommendations for the next natural disaster.

Dr. Holland disclosed that she previously served as a consultant to Hill-Rom.

Vidyard Video

SAN ANTONIO – For patients with neuromuscular disorders, the stress and danger from natural disasters such Hurricane Harvey are best avoided by leaving the area as soon as possible, according to Venessa A. Holland, MD, FCCP, of Houston Methodist Hospital.

While none of Dr. Holland’s patients died during this catastrophic hurricane, there were considerable challenges, particularly for those trapped by the many trillion gallons of water fell on Texas and Louisiana in August 2017. Houston was flooded, and hospitals and other medical facilities were hit hard. The vulnerability of ventilator-dependent and incapacitated patients was of particular concern.

In one case, a ventilator-dependent patient trapped by flood waters at home became diaphoretic and hypotensive. The patient was treated with electrolyte-replacement sports drink administered via percutaneous endoscopic gastrostomy (PEG) tube, Dr. Holland told attendees at the annual meeting of the American College of Chest Physicians.

Dr. Holland spoke in a video interview about how neuromuscular disorder patients fared during Hurricane Harvey and her recommendations for the next natural disaster.

Dr. Holland disclosed that she previously served as a consultant to Hill-Rom.

Vidyard Video

SAN ANTONIO – For patients with neuromuscular disorders, the stress and danger from natural disasters such Hurricane Harvey are best avoided by leaving the area as soon as possible, according to Venessa A. Holland, MD, FCCP, of Houston Methodist Hospital.

While none of Dr. Holland’s patients died during this catastrophic hurricane, there were considerable challenges, particularly for those trapped by the many trillion gallons of water fell on Texas and Louisiana in August 2017. Houston was flooded, and hospitals and other medical facilities were hit hard. The vulnerability of ventilator-dependent and incapacitated patients was of particular concern.

In one case, a ventilator-dependent patient trapped by flood waters at home became diaphoretic and hypotensive. The patient was treated with electrolyte-replacement sports drink administered via percutaneous endoscopic gastrostomy (PEG) tube, Dr. Holland told attendees at the annual meeting of the American College of Chest Physicians.

Dr. Holland spoke in a video interview about how neuromuscular disorder patients fared during Hurricane Harvey and her recommendations for the next natural disaster.

Dr. Holland disclosed that she previously served as a consultant to Hill-Rom.

Vidyard Video

SAN ANTONIO – Recent studies have shown that the use of a long-acting beta₂-agonist/long-acting muscarinic antagonist (LABA/LAMA) combination is superior to LAMA alone in endpoints including exacerbation, Nicola A. Hanania, MD, FCCP, said in a panel discussion session at the annual meeting of the American College of Chest Physicians.

Other recent evidence has shown that the use of LABA/LAMA has cardiovascular benefits in hyperinflated patients with COPD, according to Dr. Hanania, director of the Airways Clinical Research Center at Baylor College of Medicine, Houston.

Meanwhile, emerging data in patients with advanced COPD have demonstrated the benefits of single-inhaler triple therapy with inhaled corticosteroid (ICS)/LABA/LAMA versus LABA/LAMA or ICS/LABA combinations, Dr. Hanania said in an interview.

The past year also has brought news that ICS de-escalation is possible in patients with moderate COPD with no exacerbation risk, though it may not be possible in patients with high baseline blood eosinophils, he added.

Recent developments have not all been about drug therapy. The Zephyr endobronchial valve improved outcomes in patients with little to no collateral ventilation in target lobes, Dr. Hanania said. However, the therapy comes with a potential risk of pneumothorax, so patients need to be monitored in the hospital.

Dr. Hanania provided disclosures related to Roche (Genentech), AstraZeneca, Boehringer Ingelheim, Novartis, GlaxoSmithKline, and Sanofi/Regeneron, as well as institutional research grant support from the National Heart, Lung, and Blood Institute and the American Lung Association.

Vidyard Video

SAN ANTONIO – Recent studies have shown that the use of a long-acting beta₂-agonist/long-acting muscarinic antagonist (LABA/LAMA) combination is superior to LAMA alone in endpoints including exacerbation, Nicola A. Hanania, MD, FCCP, said in a panel discussion session at the annual meeting of the American College of Chest Physicians.

Other recent evidence has shown that the use of LABA/LAMA has cardiovascular benefits in hyperinflated patients with COPD, according to Dr. Hanania, director of the Airways Clinical Research Center at Baylor College of Medicine, Houston.

Meanwhile, emerging data in patients with advanced COPD have demonstrated the benefits of single-inhaler triple therapy with inhaled corticosteroid (ICS)/LABA/LAMA versus LABA/LAMA or ICS/LABA combinations, Dr. Hanania said in an interview.

The past year also has brought news that ICS de-escalation is possible in patients with moderate COPD with no exacerbation risk, though it may not be possible in patients with high baseline blood eosinophils, he added.

Recent developments have not all been about drug therapy. The Zephyr endobronchial valve improved outcomes in patients with little to no collateral ventilation in target lobes, Dr. Hanania said. However, the therapy comes with a potential risk of pneumothorax, so patients need to be monitored in the hospital.

Dr. Hanania provided disclosures related to Roche (Genentech), AstraZeneca, Boehringer Ingelheim, Novartis, GlaxoSmithKline, and Sanofi/Regeneron, as well as institutional research grant support from the National Heart, Lung, and Blood Institute and the American Lung Association.

Vidyard Video

SAN ANTONIO – Recent studies have shown that the use of a long-acting beta₂-agonist/long-acting muscarinic antagonist (LABA/LAMA) combination is superior to LAMA alone in endpoints including exacerbation, Nicola A. Hanania, MD, FCCP, said in a panel discussion session at the annual meeting of the American College of Chest Physicians.

Other recent evidence has shown that the use of LABA/LAMA has cardiovascular benefits in hyperinflated patients with COPD, according to Dr. Hanania, director of the Airways Clinical Research Center at Baylor College of Medicine, Houston.

Meanwhile, emerging data in patients with advanced COPD have demonstrated the benefits of single-inhaler triple therapy with inhaled corticosteroid (ICS)/LABA/LAMA versus LABA/LAMA or ICS/LABA combinations, Dr. Hanania said in an interview.

The past year also has brought news that ICS de-escalation is possible in patients with moderate COPD with no exacerbation risk, though it may not be possible in patients with high baseline blood eosinophils, he added.

Recent developments have not all been about drug therapy. The Zephyr endobronchial valve improved outcomes in patients with little to no collateral ventilation in target lobes, Dr. Hanania said. However, the therapy comes with a potential risk of pneumothorax, so patients need to be monitored in the hospital.

Dr. Hanania provided disclosures related to Roche (Genentech), AstraZeneca, Boehringer Ingelheim, Novartis, GlaxoSmithKline, and Sanofi/Regeneron, as well as institutional research grant support from the National Heart, Lung, and Blood Institute and the American Lung Association.

SAN ANTONIO – COPD patients with pulmonary circulation disorders were more than four times as likely to need invasive ventilation after noninvasive ventilation (NIV) failed for acute exacerbations, found a new study.

Tara Haelle/MDedge News

Patients with fluid and electrolyte abnormalities or alcohol abuse also had a greater risk of escalating beyond NIV for exacerbations, according to the findings.

“Patients with these underlying conditions should be monitored closely, especially individuals with existing pulmonary disorders as they are at highest risk,” Di Pan, DO, of Mount Sinai Hospital, New York, reported at annual meeting of the American College of Chest Physicians.

The researchers used the 2012-2014 Nationwide Inpatient Sample database to retrospectively analyze data from 73,480 patients, average age 67.8 years, who had a primary diagnosis of COPD exacerbation and who had received initial treatment with NIV in their first 24 hours after hospitalization. The report is in CHEST^® Journal(2018 Oct. doi: 10.1016/j.chest.2018.08.340).

The researchers examined associations between NIV failure and 29 Elixhauser comorbidity measures to identify what clinical characteristics might predict the need for invasive ventilation. They defined NIV failure as requiring intubation at any time within 30 days of admission.

Pulmonary circulation disorders emerged as the strongest predictor of the need for intubation, with a fourfold increase in relative risk (hazard ratio [HR]: 4.19, P less than .001). Alcohol abuse (HR: 1.85, P = .01) and fluid and electrolyte abnormalities (HR: 1.3, P less than .001) followed as additional factors associated with NIV failure. The latter included irregularities in potassium or sodium, acid-base disorders, hypervolemia and hypovolemia.

Among the 3,740 patients with alcohol abuse, additional statistically significant associations with intubation included a slightly higher mean age, female sex, and the mean Charlson comorbidity index. Mean age of those requiring intubation in this group was 62.28 years, compared 61.47 years among those in whom NIV was adequate (P = .03). Among those intubated, 30.2% of the patients were female, compared with 26.3% female patients in the nonintubated group.

Among the 26,150 patients with fluid, electrolyte and acid-base disturbances, younger patients were more likely to require intubation: The average age of those needing intubation was 67.23 years, compared with 69.3 years for those non-intubated (P less than .001). While a higher Charlson index (2.83 vs. 2.53) was again correlated with greater risk of needing intubation (P less than .001), males were now more likely to require intubation: 58.1% of those without intubation were female, compared with 53.9% of those needing intubation (P less than .001).

Within the 890 patients with pulmonary circulation disorders, mean age was 68.03 years for intubation and 70.77 years for nonintubation (P less than .001). In this group, 56.4% of the patients requiring intubation were female, compared to 47.9% of patients not intubated. The average Charlson index was lower (3.11) among those requiring intubation than among those not needing it (3.57, P less than .001).

The findings were limited by the lack of disease severity stratification and use of now-outdated ICD-9 coding. The researchers also lacked detailed clinical data, such as lab values, imaging results, and vital signs, and Dr. Pan acknowledged the broad variation within the diagnoses of the also-broad Elixhauser comorbidity index.

“For the next steps, we can do a stratified analysis” to identify which specific pulmonary circulation diseases primarily account for the association with intubation, Dr. Pan said.

No external funding was noted. The authors reported having no disclosures.

SOURCE: Pan D. et al. CHEST 2018. https://doi.org/10.1016/j.chest.2018.08.340.

SAN ANTONIO – COPD patients with pulmonary circulation disorders were more than four times as likely to need invasive ventilation after noninvasive ventilation (NIV) failed for acute exacerbations, found a new study.

Tara Haelle/MDedge News

Patients with fluid and electrolyte abnormalities or alcohol abuse also had a greater risk of escalating beyond NIV for exacerbations, according to the findings.

“Patients with these underlying conditions should be monitored closely, especially individuals with existing pulmonary disorders as they are at highest risk,” Di Pan, DO, of Mount Sinai Hospital, New York, reported at annual meeting of the American College of Chest Physicians.

The researchers used the 2012-2014 Nationwide Inpatient Sample database to retrospectively analyze data from 73,480 patients, average age 67.8 years, who had a primary diagnosis of COPD exacerbation and who had received initial treatment with NIV in their first 24 hours after hospitalization. The report is in CHEST^® Journal(2018 Oct. doi: 10.1016/j.chest.2018.08.340).

The researchers examined associations between NIV failure and 29 Elixhauser comorbidity measures to identify what clinical characteristics might predict the need for invasive ventilation. They defined NIV failure as requiring intubation at any time within 30 days of admission.

Pulmonary circulation disorders emerged as the strongest predictor of the need for intubation, with a fourfold increase in relative risk (hazard ratio [HR]: 4.19, P less than .001). Alcohol abuse (HR: 1.85, P = .01) and fluid and electrolyte abnormalities (HR: 1.3, P less than .001) followed as additional factors associated with NIV failure. The latter included irregularities in potassium or sodium, acid-base disorders, hypervolemia and hypovolemia.

Among the 3,740 patients with alcohol abuse, additional statistically significant associations with intubation included a slightly higher mean age, female sex, and the mean Charlson comorbidity index. Mean age of those requiring intubation in this group was 62.28 years, compared 61.47 years among those in whom NIV was adequate (P = .03). Among those intubated, 30.2% of the patients were female, compared with 26.3% female patients in the nonintubated group.

Among the 26,150 patients with fluid, electrolyte and acid-base disturbances, younger patients were more likely to require intubation: The average age of those needing intubation was 67.23 years, compared with 69.3 years for those non-intubated (P less than .001). While a higher Charlson index (2.83 vs. 2.53) was again correlated with greater risk of needing intubation (P less than .001), males were now more likely to require intubation: 58.1% of those without intubation were female, compared with 53.9% of those needing intubation (P less than .001).

Within the 890 patients with pulmonary circulation disorders, mean age was 68.03 years for intubation and 70.77 years for nonintubation (P less than .001). In this group, 56.4% of the patients requiring intubation were female, compared to 47.9% of patients not intubated. The average Charlson index was lower (3.11) among those requiring intubation than among those not needing it (3.57, P less than .001).

The findings were limited by the lack of disease severity stratification and use of now-outdated ICD-9 coding. The researchers also lacked detailed clinical data, such as lab values, imaging results, and vital signs, and Dr. Pan acknowledged the broad variation within the diagnoses of the also-broad Elixhauser comorbidity index.

“For the next steps, we can do a stratified analysis” to identify which specific pulmonary circulation diseases primarily account for the association with intubation, Dr. Pan said.

No external funding was noted. The authors reported having no disclosures.

SOURCE: Pan D. et al. CHEST 2018. https://doi.org/10.1016/j.chest.2018.08.340.

SAN ANTONIO – COPD patients with pulmonary circulation disorders were more than four times as likely to need invasive ventilation after noninvasive ventilation (NIV) failed for acute exacerbations, found a new study.

Tara Haelle/MDedge News

Patients with fluid and electrolyte abnormalities or alcohol abuse also had a greater risk of escalating beyond NIV for exacerbations, according to the findings.

“Patients with these underlying conditions should be monitored closely, especially individuals with existing pulmonary disorders as they are at highest risk,” Di Pan, DO, of Mount Sinai Hospital, New York, reported at annual meeting of the American College of Chest Physicians.

The researchers used the 2012-2014 Nationwide Inpatient Sample database to retrospectively analyze data from 73,480 patients, average age 67.8 years, who had a primary diagnosis of COPD exacerbation and who had received initial treatment with NIV in their first 24 hours after hospitalization. The report is in CHEST^® Journal(2018 Oct. doi: 10.1016/j.chest.2018.08.340).

The researchers examined associations between NIV failure and 29 Elixhauser comorbidity measures to identify what clinical characteristics might predict the need for invasive ventilation. They defined NIV failure as requiring intubation at any time within 30 days of admission.

Pulmonary circulation disorders emerged as the strongest predictor of the need for intubation, with a fourfold increase in relative risk (hazard ratio [HR]: 4.19, P less than .001). Alcohol abuse (HR: 1.85, P = .01) and fluid and electrolyte abnormalities (HR: 1.3, P less than .001) followed as additional factors associated with NIV failure. The latter included irregularities in potassium or sodium, acid-base disorders, hypervolemia and hypovolemia.

Among the 3,740 patients with alcohol abuse, additional statistically significant associations with intubation included a slightly higher mean age, female sex, and the mean Charlson comorbidity index. Mean age of those requiring intubation in this group was 62.28 years, compared 61.47 years among those in whom NIV was adequate (P = .03). Among those intubated, 30.2% of the patients were female, compared with 26.3% female patients in the nonintubated group.

Among the 26,150 patients with fluid, electrolyte and acid-base disturbances, younger patients were more likely to require intubation: The average age of those needing intubation was 67.23 years, compared with 69.3 years for those non-intubated (P less than .001). While a higher Charlson index (2.83 vs. 2.53) was again correlated with greater risk of needing intubation (P less than .001), males were now more likely to require intubation: 58.1% of those without intubation were female, compared with 53.9% of those needing intubation (P less than .001).

Within the 890 patients with pulmonary circulation disorders, mean age was 68.03 years for intubation and 70.77 years for nonintubation (P less than .001). In this group, 56.4% of the patients requiring intubation were female, compared to 47.9% of patients not intubated. The average Charlson index was lower (3.11) among those requiring intubation than among those not needing it (3.57, P less than .001).

The findings were limited by the lack of disease severity stratification and use of now-outdated ICD-9 coding. The researchers also lacked detailed clinical data, such as lab values, imaging results, and vital signs, and Dr. Pan acknowledged the broad variation within the diagnoses of the also-broad Elixhauser comorbidity index.

“For the next steps, we can do a stratified analysis” to identify which specific pulmonary circulation diseases primarily account for the association with intubation, Dr. Pan said.

No external funding was noted. The authors reported having no disclosures.

SOURCE: Pan D. et al. CHEST 2018. https://doi.org/10.1016/j.chest.2018.08.340.

SAN ANTONIO – Interventions that address variations in inflammation type and metabolism unique to obese patients with asthma or COPD might prove useful for improving their management, Cherry Wongtrakool, MD, of Emory University, Atlanta, said in a presentation at the annual meeting of the American College of Chest Physicians.

Obese patients with asthma or COPD typically have metabolic and inflammatory profiles that differ from those of nonobese patients with the disorders. Obesity is associated with the development of asthma as well as its severity and the risk for exacerbations. Obese patients with asthma are less likely to have controlled disease or to respond to medication.

The variations in asthma related to obesity even can be traced to infancy for some. Children with rapid weight gain after birth, for example, have an increased risk for developing asthma. In the recently published Boston Birth Cohort study, more than 500 babies from urban, low income families were followed from birth until age 16. Babies with rapid weight gain at 4 months and at 24 months had an increased risk for developing asthma by age 16. Even after adjusting for multiple risk factors, the increased risk for developing asthma persisted in these obese infants.

Higher BMIs during infancy may affect lung development, which continues up to age 5-8 years, Dr. Wongtrakool said. Obesity may affect immune system development. Asthma may develop when persistent inflammation during infancy gets a second hit from genetic factors or from risk factors such as atopy or maternal smoking.

Dr. Wongtrakool noted that obese patients with asthma, unlike nonobese asthma patients, tend to have non-TH2 inflammation. Their TH1/TH2 ratio in stimulated T cells is higher and is directly associated with insulin resistance. Similar to obese patients without asthma, they have higher levels of circulating TNF-alpha, interferon-gamma inducible protein 10, and monocyte chemoattractant protein-1 (MCP-1). They are more likely to have insulin resistance, low high-density lipid levels, differences in gut microbiota, increased leptin, decreased adiponectin, increased asymmetric dimethylarginine, and decreased exhaled nitrous oxide (NO).

In broncheoalveolar lavage samples, obese asthma patients have more cells that secrete interleukin-17, Dr. Wontrakool said. TH17-associated inflammation also has an influence in asthma with obesity. A recent study of 30 obese and lean asthma patients found a difference in metabolites measured in breath samples of obese people with asthma, compared with lean people with asthma and obese people without asthma.

In terms of metabolites in their breath, obese asthma patients clustered together and differed from lean patients with asthma and obese patients without asthma.

Obese people with asthma also differ in their gut microbiota, having more firmicutes species and decreased bacteroides species. Studies in mice indicate that these species have a role in body weight and that altering gut microbiota via fecal transplant was associated with weight loss when obese mice received fecal transplants from lean mice, and vice versa.

In the Supplemental Nutrition in Asthma Control (SNAC) study, preadolescents with asthma were given a nutrition bar designed by researchers at the Children’s Hospital Oakland (Calif.) Research Institute. The children also received asthma education and exercise classes, but the intervention was not designed to reduce weight. FVC and FEV₁ improved in all study participants, but those participants in the low inflammation subgroup had the most pronounced improvements in FVC and FEV₁ after 2 months.

Dr. Wongtrakool called the study “intriguing,” as it indicates asthma patients with lower level inflammation appear more likely to benefit from nutritional supplementation.

In another study of 55 obese adult asthma patients, a hypocaloric diet, access to a nutritionist and psychologist, and exercise classes were associated with improved asthma control and an improved inflammatory and metabolic profile.

In a British registry of the outcomes of bariatric surgery for obesity, patients who also had asthma had a decrease in asthma prevalence in the year after surgery that persisted over 5 years.

The association of COPD with obesity has been less studied than asthma and COPD, but metabolic syndrome appears to be on the rise in these patients. In a study performed over a decade ago, 47% of COPD patients met the definition of metabolic syndrome; a more recent study found 77% of COPD patients met the standard.

Admission glucose levels also have been found to influence the severity of COPD exacerbation. With higher blood glucose levels, there was a higher risk of mortality—from 12% in those with glucose levels of less than 6.0 mmol/l to 31% among those with glucose levels exceeding 9.0 mmol/l, one study showed.

Bariatric surgery may reduce the risk of acute exacerbations of COPD in obese patients, another recent study found. In a study of 480 obese patients with COPD who underwent bariatric surgery, their 28% presurgical risk of acute exacerbations of COPD was cut in half by 12 months after surgery, and the reduction persisted at 24 months.

SAN ANTONIO – Interventions that address variations in inflammation type and metabolism unique to obese patients with asthma or COPD might prove useful for improving their management, Cherry Wongtrakool, MD, of Emory University, Atlanta, said in a presentation at the annual meeting of the American College of Chest Physicians.

Obese patients with asthma or COPD typically have metabolic and inflammatory profiles that differ from those of nonobese patients with the disorders. Obesity is associated with the development of asthma as well as its severity and the risk for exacerbations. Obese patients with asthma are less likely to have controlled disease or to respond to medication.

The variations in asthma related to obesity even can be traced to infancy for some. Children with rapid weight gain after birth, for example, have an increased risk for developing asthma. In the recently published Boston Birth Cohort study, more than 500 babies from urban, low income families were followed from birth until age 16. Babies with rapid weight gain at 4 months and at 24 months had an increased risk for developing asthma by age 16. Even after adjusting for multiple risk factors, the increased risk for developing asthma persisted in these obese infants.

Higher BMIs during infancy may affect lung development, which continues up to age 5-8 years, Dr. Wongtrakool said. Obesity may affect immune system development. Asthma may develop when persistent inflammation during infancy gets a second hit from genetic factors or from risk factors such as atopy or maternal smoking.

Dr. Wongtrakool noted that obese patients with asthma, unlike nonobese asthma patients, tend to have non-TH2 inflammation. Their TH1/TH2 ratio in stimulated T cells is higher and is directly associated with insulin resistance. Similar to obese patients without asthma, they have higher levels of circulating TNF-alpha, interferon-gamma inducible protein 10, and monocyte chemoattractant protein-1 (MCP-1). They are more likely to have insulin resistance, low high-density lipid levels, differences in gut microbiota, increased leptin, decreased adiponectin, increased asymmetric dimethylarginine, and decreased exhaled nitrous oxide (NO).

In broncheoalveolar lavage samples, obese asthma patients have more cells that secrete interleukin-17, Dr. Wontrakool said. TH17-associated inflammation also has an influence in asthma with obesity. A recent study of 30 obese and lean asthma patients found a difference in metabolites measured in breath samples of obese people with asthma, compared with lean people with asthma and obese people without asthma.

In terms of metabolites in their breath, obese asthma patients clustered together and differed from lean patients with asthma and obese patients without asthma.

Obese people with asthma also differ in their gut microbiota, having more firmicutes species and decreased bacteroides species. Studies in mice indicate that these species have a role in body weight and that altering gut microbiota via fecal transplant was associated with weight loss when obese mice received fecal transplants from lean mice, and vice versa.

In the Supplemental Nutrition in Asthma Control (SNAC) study, preadolescents with asthma were given a nutrition bar designed by researchers at the Children’s Hospital Oakland (Calif.) Research Institute. The children also received asthma education and exercise classes, but the intervention was not designed to reduce weight. FVC and FEV₁ improved in all study participants, but those participants in the low inflammation subgroup had the most pronounced improvements in FVC and FEV₁ after 2 months.

Dr. Wongtrakool called the study “intriguing,” as it indicates asthma patients with lower level inflammation appear more likely to benefit from nutritional supplementation.

In another study of 55 obese adult asthma patients, a hypocaloric diet, access to a nutritionist and psychologist, and exercise classes were associated with improved asthma control and an improved inflammatory and metabolic profile.

In a British registry of the outcomes of bariatric surgery for obesity, patients who also had asthma had a decrease in asthma prevalence in the year after surgery that persisted over 5 years.

The association of COPD with obesity has been less studied than asthma and COPD, but metabolic syndrome appears to be on the rise in these patients. In a study performed over a decade ago, 47% of COPD patients met the definition of metabolic syndrome; a more recent study found 77% of COPD patients met the standard.

Admission glucose levels also have been found to influence the severity of COPD exacerbation. With higher blood glucose levels, there was a higher risk of mortality—from 12% in those with glucose levels of less than 6.0 mmol/l to 31% among those with glucose levels exceeding 9.0 mmol/l, one study showed.

Bariatric surgery may reduce the risk of acute exacerbations of COPD in obese patients, another recent study found. In a study of 480 obese patients with COPD who underwent bariatric surgery, their 28% presurgical risk of acute exacerbations of COPD was cut in half by 12 months after surgery, and the reduction persisted at 24 months.

SAN ANTONIO – Interventions that address variations in inflammation type and metabolism unique to obese patients with asthma or COPD might prove useful for improving their management, Cherry Wongtrakool, MD, of Emory University, Atlanta, said in a presentation at the annual meeting of the American College of Chest Physicians.

Obese patients with asthma or COPD typically have metabolic and inflammatory profiles that differ from those of nonobese patients with the disorders. Obesity is associated with the development of asthma as well as its severity and the risk for exacerbations. Obese patients with asthma are less likely to have controlled disease or to respond to medication.

The variations in asthma related to obesity even can be traced to infancy for some. Children with rapid weight gain after birth, for example, have an increased risk for developing asthma. In the recently published Boston Birth Cohort study, more than 500 babies from urban, low income families were followed from birth until age 16. Babies with rapid weight gain at 4 months and at 24 months had an increased risk for developing asthma by age 16. Even after adjusting for multiple risk factors, the increased risk for developing asthma persisted in these obese infants.

Higher BMIs during infancy may affect lung development, which continues up to age 5-8 years, Dr. Wongtrakool said. Obesity may affect immune system development. Asthma may develop when persistent inflammation during infancy gets a second hit from genetic factors or from risk factors such as atopy or maternal smoking.

Dr. Wongtrakool noted that obese patients with asthma, unlike nonobese asthma patients, tend to have non-TH2 inflammation. Their TH1/TH2 ratio in stimulated T cells is higher and is directly associated with insulin resistance. Similar to obese patients without asthma, they have higher levels of circulating TNF-alpha, interferon-gamma inducible protein 10, and monocyte chemoattractant protein-1 (MCP-1). They are more likely to have insulin resistance, low high-density lipid levels, differences in gut microbiota, increased leptin, decreased adiponectin, increased asymmetric dimethylarginine, and decreased exhaled nitrous oxide (NO).

In broncheoalveolar lavage samples, obese asthma patients have more cells that secrete interleukin-17, Dr. Wontrakool said. TH17-associated inflammation also has an influence in asthma with obesity. A recent study of 30 obese and lean asthma patients found a difference in metabolites measured in breath samples of obese people with asthma, compared with lean people with asthma and obese people without asthma.

In terms of metabolites in their breath, obese asthma patients clustered together and differed from lean patients with asthma and obese patients without asthma.

Obese people with asthma also differ in their gut microbiota, having more firmicutes species and decreased bacteroides species. Studies in mice indicate that these species have a role in body weight and that altering gut microbiota via fecal transplant was associated with weight loss when obese mice received fecal transplants from lean mice, and vice versa.

In the Supplemental Nutrition in Asthma Control (SNAC) study, preadolescents with asthma were given a nutrition bar designed by researchers at the Children’s Hospital Oakland (Calif.) Research Institute. The children also received asthma education and exercise classes, but the intervention was not designed to reduce weight. FVC and FEV₁ improved in all study participants, but those participants in the low inflammation subgroup had the most pronounced improvements in FVC and FEV₁ after 2 months.

Dr. Wongtrakool called the study “intriguing,” as it indicates asthma patients with lower level inflammation appear more likely to benefit from nutritional supplementation.

In another study of 55 obese adult asthma patients, a hypocaloric diet, access to a nutritionist and psychologist, and exercise classes were associated with improved asthma control and an improved inflammatory and metabolic profile.

In a British registry of the outcomes of bariatric surgery for obesity, patients who also had asthma had a decrease in asthma prevalence in the year after surgery that persisted over 5 years.

The association of COPD with obesity has been less studied than asthma and COPD, but metabolic syndrome appears to be on the rise in these patients. In a study performed over a decade ago, 47% of COPD patients met the definition of metabolic syndrome; a more recent study found 77% of COPD patients met the standard.

Admission glucose levels also have been found to influence the severity of COPD exacerbation. With higher blood glucose levels, there was a higher risk of mortality—from 12% in those with glucose levels of less than 6.0 mmol/l to 31% among those with glucose levels exceeding 9.0 mmol/l, one study showed.

Bariatric surgery may reduce the risk of acute exacerbations of COPD in obese patients, another recent study found. In a study of 480 obese patients with COPD who underwent bariatric surgery, their 28% presurgical risk of acute exacerbations of COPD was cut in half by 12 months after surgery, and the reduction persisted at 24 months.

SAN FRANCISCO – Influenza season is upon us, and Helen Chu, MD, MPH, is here at ID Week 2018 to talk vaccines, especially for pregnant women.

They are at greater risk for more severe illness, and influenza can lead to adverse outcomes in infants. The good news is that recent studies have shown that flu vaccines are safe and effective in pregnant women.

The bad news is that many women are hesitant to be vaccinated out of concerns over safety, in a trend that reflects broader societal worries over vaccination, said Dr. Chu, of the University of Washington, Seattle. In a video interview at an annual scientific meeting on infectious diseases, Dr. Chu advised steps to ensure that pregnant women are aware of the safety and efficacy of flu vaccines, and the benefits to the infant who acquires immunity through the mother. It’s also a good idea to have vaccine on hand to be able to offer it immediately during an office visit.

SAN FRANCISCO – Influenza season is upon us, and Helen Chu, MD, MPH, is here at ID Week 2018 to talk vaccines, especially for pregnant women.

They are at greater risk for more severe illness, and influenza can lead to adverse outcomes in infants. The good news is that recent studies have shown that flu vaccines are safe and effective in pregnant women.

The bad news is that many women are hesitant to be vaccinated out of concerns over safety, in a trend that reflects broader societal worries over vaccination, said Dr. Chu, of the University of Washington, Seattle. In a video interview at an annual scientific meeting on infectious diseases, Dr. Chu advised steps to ensure that pregnant women are aware of the safety and efficacy of flu vaccines, and the benefits to the infant who acquires immunity through the mother. It’s also a good idea to have vaccine on hand to be able to offer it immediately during an office visit.

SAN FRANCISCO – Influenza season is upon us, and Helen Chu, MD, MPH, is here at ID Week 2018 to talk vaccines, especially for pregnant women.

They are at greater risk for more severe illness, and influenza can lead to adverse outcomes in infants. The good news is that recent studies have shown that flu vaccines are safe and effective in pregnant women.

The bad news is that many women are hesitant to be vaccinated out of concerns over safety, in a trend that reflects broader societal worries over vaccination, said Dr. Chu, of the University of Washington, Seattle. In a video interview at an annual scientific meeting on infectious diseases, Dr. Chu advised steps to ensure that pregnant women are aware of the safety and efficacy of flu vaccines, and the benefits to the infant who acquires immunity through the mother. It’s also a good idea to have vaccine on hand to be able to offer it immediately during an office visit.