Pulmonology

The presence of pulmonary arterial hypertension, whether preexisting or occurring in conjunction with a COVID-19 infection, will likely increase the risk for morbidity and mortality in these patients, according to a research article published in Pulmonary Circulation.

“The impetus for this manuscript was a recent discussion within the Pulmonary Hypertension Association (PHA) and [its] Scientific Leadership Council who expressed a need for guidelines from experts in the field,” wrote John J. Ryan, MD, of the University of Utah, Salt Lake City, and colleagues.

The authors highlight some of the unique challenges in caring for patients with pulmonary hypertension (PH), particularly pulmonary arterial hypertension (PAH), in the context of the COVID-19 pandemic.

Telemedicine and temporary visit schedules for new and returning PAH patients can help reduce risk of virus transmission, if patient accessibility to telemedicine is feasible. Protocols to reduce the risk of virus exposure or transmission in the office setting included less frequent echocardiography and 6-Minute Walk Tests (6MWTs) for patients in stable condition. In stable patients, “avoid pulmonary function of V/Q tests when possible,” the authors wrote.

New patients who have been referred for PAH present a challenge in conducting a thorough evaluation that would normally include measurement of invasive hemodynamics in keeping with current diagnostic guidelines. Clinicians will need to balance the potential risks of COVID-19 exposure during elective procedures against the benefits of full evaluations to plan PAH treatment, the authors noted.

For established patients who are clinically stable, remote visits may be an option, with a risk/benefit assessment of the need for in-person diagnostic tests at the current time, they said. However, telemedicine’s limitations include not only patient accessibility and understanding of audio and video technology, but also inability to accurately measure vital signs, they said.

As for routine testing such as echocardiograms, 6MWTs, and other laboratory testing, “it is important to consider the additive value of these sometimes comprehensive tests in the context of the risks associated with visiting the hospital or clinic to obtain them,” the authors said.

Patients who are unstable and experience worsening right heart failure (RHF) at home may have contracted a COVID-19 infection, but the differential diagnosis includes sepsis, ischemia, and PAH disease progression. “During the current pandemic, fever at home in a PAH patient should be assumed to represent a COVID-19 infection,” and patients with worsening respiratory symptoms that require hospitalization should be tested for COVID-19, the authors emphasized.

Use of ECMO or other intensive interventions should be considered in the context of risk assessment, the authors said. “As a general recommendation, practitioners should consider utilizing an established PAH-specific risk assessment tool to help identify patients who are more likely to survive heroic interventions during the COVID-19 outbreak,” they wrote.

Training and education of PH providers will continue to be limited by the pandemic, and many clinical trials and research programs have been suspended and will need to be restructured to minimize risk of transmission of the COVID-19 virus, the authors said. However, health care providers must continue to provide PAH patients and families with advice and updates in best practices, while “acknowledging that the situation changes rapidly,” they concluded.

Dr. Ryan disclosed participating on the speakers bureau, and provides consulting services for, Actelion and Bayer, as well as research support from the Reagan Corporation, the Gordon Family, and the Cushman Family.

SOURCE: Ryan JJ et al. Pulm Circ. 2020 Apr 29. doi: 10.1177/2045894020920153.

The presence of pulmonary arterial hypertension, whether preexisting or occurring in conjunction with a COVID-19 infection, will likely increase the risk for morbidity and mortality in these patients, according to a research article published in Pulmonary Circulation.

“The impetus for this manuscript was a recent discussion within the Pulmonary Hypertension Association (PHA) and [its] Scientific Leadership Council who expressed a need for guidelines from experts in the field,” wrote John J. Ryan, MD, of the University of Utah, Salt Lake City, and colleagues.

The authors highlight some of the unique challenges in caring for patients with pulmonary hypertension (PH), particularly pulmonary arterial hypertension (PAH), in the context of the COVID-19 pandemic.

Telemedicine and temporary visit schedules for new and returning PAH patients can help reduce risk of virus transmission, if patient accessibility to telemedicine is feasible. Protocols to reduce the risk of virus exposure or transmission in the office setting included less frequent echocardiography and 6-Minute Walk Tests (6MWTs) for patients in stable condition. In stable patients, “avoid pulmonary function of V/Q tests when possible,” the authors wrote.

New patients who have been referred for PAH present a challenge in conducting a thorough evaluation that would normally include measurement of invasive hemodynamics in keeping with current diagnostic guidelines. Clinicians will need to balance the potential risks of COVID-19 exposure during elective procedures against the benefits of full evaluations to plan PAH treatment, the authors noted.

For established patients who are clinically stable, remote visits may be an option, with a risk/benefit assessment of the need for in-person diagnostic tests at the current time, they said. However, telemedicine’s limitations include not only patient accessibility and understanding of audio and video technology, but also inability to accurately measure vital signs, they said.

As for routine testing such as echocardiograms, 6MWTs, and other laboratory testing, “it is important to consider the additive value of these sometimes comprehensive tests in the context of the risks associated with visiting the hospital or clinic to obtain them,” the authors said.

Patients who are unstable and experience worsening right heart failure (RHF) at home may have contracted a COVID-19 infection, but the differential diagnosis includes sepsis, ischemia, and PAH disease progression. “During the current pandemic, fever at home in a PAH patient should be assumed to represent a COVID-19 infection,” and patients with worsening respiratory symptoms that require hospitalization should be tested for COVID-19, the authors emphasized.

Use of ECMO or other intensive interventions should be considered in the context of risk assessment, the authors said. “As a general recommendation, practitioners should consider utilizing an established PAH-specific risk assessment tool to help identify patients who are more likely to survive heroic interventions during the COVID-19 outbreak,” they wrote.

Training and education of PH providers will continue to be limited by the pandemic, and many clinical trials and research programs have been suspended and will need to be restructured to minimize risk of transmission of the COVID-19 virus, the authors said. However, health care providers must continue to provide PAH patients and families with advice and updates in best practices, while “acknowledging that the situation changes rapidly,” they concluded.

Dr. Ryan disclosed participating on the speakers bureau, and provides consulting services for, Actelion and Bayer, as well as research support from the Reagan Corporation, the Gordon Family, and the Cushman Family.

SOURCE: Ryan JJ et al. Pulm Circ. 2020 Apr 29. doi: 10.1177/2045894020920153.

The presence of pulmonary arterial hypertension, whether preexisting or occurring in conjunction with a COVID-19 infection, will likely increase the risk for morbidity and mortality in these patients, according to a research article published in Pulmonary Circulation.

“The impetus for this manuscript was a recent discussion within the Pulmonary Hypertension Association (PHA) and [its] Scientific Leadership Council who expressed a need for guidelines from experts in the field,” wrote John J. Ryan, MD, of the University of Utah, Salt Lake City, and colleagues.

The authors highlight some of the unique challenges in caring for patients with pulmonary hypertension (PH), particularly pulmonary arterial hypertension (PAH), in the context of the COVID-19 pandemic.

Telemedicine and temporary visit schedules for new and returning PAH patients can help reduce risk of virus transmission, if patient accessibility to telemedicine is feasible. Protocols to reduce the risk of virus exposure or transmission in the office setting included less frequent echocardiography and 6-Minute Walk Tests (6MWTs) for patients in stable condition. In stable patients, “avoid pulmonary function of V/Q tests when possible,” the authors wrote.

New patients who have been referred for PAH present a challenge in conducting a thorough evaluation that would normally include measurement of invasive hemodynamics in keeping with current diagnostic guidelines. Clinicians will need to balance the potential risks of COVID-19 exposure during elective procedures against the benefits of full evaluations to plan PAH treatment, the authors noted.

For established patients who are clinically stable, remote visits may be an option, with a risk/benefit assessment of the need for in-person diagnostic tests at the current time, they said. However, telemedicine’s limitations include not only patient accessibility and understanding of audio and video technology, but also inability to accurately measure vital signs, they said.

As for routine testing such as echocardiograms, 6MWTs, and other laboratory testing, “it is important to consider the additive value of these sometimes comprehensive tests in the context of the risks associated with visiting the hospital or clinic to obtain them,” the authors said.

Patients who are unstable and experience worsening right heart failure (RHF) at home may have contracted a COVID-19 infection, but the differential diagnosis includes sepsis, ischemia, and PAH disease progression. “During the current pandemic, fever at home in a PAH patient should be assumed to represent a COVID-19 infection,” and patients with worsening respiratory symptoms that require hospitalization should be tested for COVID-19, the authors emphasized.

Use of ECMO or other intensive interventions should be considered in the context of risk assessment, the authors said. “As a general recommendation, practitioners should consider utilizing an established PAH-specific risk assessment tool to help identify patients who are more likely to survive heroic interventions during the COVID-19 outbreak,” they wrote.

Training and education of PH providers will continue to be limited by the pandemic, and many clinical trials and research programs have been suspended and will need to be restructured to minimize risk of transmission of the COVID-19 virus, the authors said. However, health care providers must continue to provide PAH patients and families with advice and updates in best practices, while “acknowledging that the situation changes rapidly,” they concluded.

Dr. Ryan disclosed participating on the speakers bureau, and provides consulting services for, Actelion and Bayer, as well as research support from the Reagan Corporation, the Gordon Family, and the Cushman Family.

SOURCE: Ryan JJ et al. Pulm Circ. 2020 Apr 29. doi: 10.1177/2045894020920153.

In “Asthma: Newer Tx options mean more targeted therapy” (J Fam Pract. 2020;65:135-144), Rali et al recommend azithromycin as an add-on therapy to ICS-LABA for a select group of patients with uncontrolled persistent asthma (neutrophilic phenotype)—a Grade C recommendation. However, the best available evidence demonstrates that azithromycin is equally efficacious for uncontrolled persistent eosinophilic asthma.^1,2 Thus, family physicians need not refer patients for bronchoscopy to identify the inflammatory “phenotype.”

An important unanswered question is whether azithromycin needs to be administered continuously. Emerging evidence indicates that some patients may experience prolonged benefit after time-limited azithromycin treatment. This suggests that the mechanism of action, which has been described as anti-inflammatory, is (at least in part) antimicrobial.³

For azithromycin-treated asthma patients who experience a significant clinical response after 3 to 6 months of treatment, I recommend that the prescribing clinician try taking the patient off azithromycin to assess whether clinical improvement persists or wanes. Nothing is lost, and much is gained, by this approach; patients who relapse can resume azithromycin, and patients who remain improved are spared exposure to an unnecessary and prolonged treatment.

David L. Hahn, MD, MS
Madison, WI

In “Asthma: Newer Tx options mean more targeted therapy” (J Fam Pract. 2020;65:135-144), Rali et al recommend azithromycin as an add-on therapy to ICS-LABA for a select group of patients with uncontrolled persistent asthma (neutrophilic phenotype)—a Grade C recommendation. However, the best available evidence demonstrates that azithromycin is equally efficacious for uncontrolled persistent eosinophilic asthma.^1,2 Thus, family physicians need not refer patients for bronchoscopy to identify the inflammatory “phenotype.”

An important unanswered question is whether azithromycin needs to be administered continuously. Emerging evidence indicates that some patients may experience prolonged benefit after time-limited azithromycin treatment. This suggests that the mechanism of action, which has been described as anti-inflammatory, is (at least in part) antimicrobial.³

For azithromycin-treated asthma patients who experience a significant clinical response after 3 to 6 months of treatment, I recommend that the prescribing clinician try taking the patient off azithromycin to assess whether clinical improvement persists or wanes. Nothing is lost, and much is gained, by this approach; patients who relapse can resume azithromycin, and patients who remain improved are spared exposure to an unnecessary and prolonged treatment.

David L. Hahn, MD, MS
Madison, WI

In “Asthma: Newer Tx options mean more targeted therapy” (J Fam Pract. 2020;65:135-144), Rali et al recommend azithromycin as an add-on therapy to ICS-LABA for a select group of patients with uncontrolled persistent asthma (neutrophilic phenotype)—a Grade C recommendation. However, the best available evidence demonstrates that azithromycin is equally efficacious for uncontrolled persistent eosinophilic asthma.^1,2 Thus, family physicians need not refer patients for bronchoscopy to identify the inflammatory “phenotype.”

An important unanswered question is whether azithromycin needs to be administered continuously. Emerging evidence indicates that some patients may experience prolonged benefit after time-limited azithromycin treatment. This suggests that the mechanism of action, which has been described as anti-inflammatory, is (at least in part) antimicrobial.³

For azithromycin-treated asthma patients who experience a significant clinical response after 3 to 6 months of treatment, I recommend that the prescribing clinician try taking the patient off azithromycin to assess whether clinical improvement persists or wanes. Nothing is lost, and much is gained, by this approach; patients who relapse can resume azithromycin, and patients who remain improved are spared exposure to an unnecessary and prolonged treatment.

David L. Hahn, MD, MS
Madison, WI

THE CASE

A 36-year-old nonsmoking white man presented with an episodic 3-month history of dry cough and nasal allergy symptoms. He reported a past history of sinus allergies but no history of asthma. His illness began with a flu-like syndrome, and he had been treated with antibiotics (amoxicillin and azithromycin) and oral steroids (methylprednisolone) by 2 other physicians for “viral syndrome” and “bronchitis.”

The patient reported some tactile fever initially but none thereafter. Symptoms included episodic wheezing but no overt shortness of breath. In addition to the persistent dry cough, he complained of frequent sinus congestion, post-nasal drip, and sneezing. He became concerned when he noticed a fleck of blood in his phlegm.

Physical exam was unimpressive, except for nasal congestion. His breath sounds were clear. Chest x-ray showed a benign-appearing granuloma in the right lower lobe (no previous films available for comparison). Peak-flow measurements taken in the office were persistently low (58%-70%) but improved with steroids and inhaled albuterol.

Over the following 7 weeks, the patient experienced waxing and waning symptoms. At his follow-up visit, he appeared well; chest auscultation revealed normal breath sounds. He was treated with an additional round of antibiotics (levofloxacin), oral steroids, nasal steroids, and inhaled albuterol.

At 13 weeks from his initial presentation, he developed frank hemoptysis and was diagnosed with a right lower-lobe pneumonia in the emergency department. While hospitalized, his clinical status deteriorated, requiring chest tube placement for a large pleural effusion.

Shortly thereafter, he underwent right middle and lower lobectomies and decortication. Multiple organisms were cultured from the pleural fluid. Tuberculosis testing and acid-fast bacilli stains were negative. No malignant cells were identified. Pathologic examination of the resected lung tissue confirmed the chest x-ray finding of a benign calcified granuloma. Additional testing, including a thin barium esophagram, was performed.

THE DIAGNOSIS

Results of the esophagram revealed a congenital bronchoesophageal fistula (C-BEF) between the patient’s esophagus and right mainstem bronchus, located 15 cm distal to his trachea.

Continue to: DISCUSSION

 

 

DISCUSSION

Fistulous connections between the esophagus and bronchi are rare but may arise in the setting of malignancy, trauma, inflammation, or congenital malformation.¹ While the precise etiology of C-BEF remains unknown, it is believed to be a consequence of failed tracheoesophageal separation during the early stages of embryonic development.

Prevalence and epidemiology. C-BEF has been reported to occur in 1 in 3000 to 4000 live births, often with concomitant esophageal atresia.² Infants with esophageal atresia demonstrate clinically significant respiratory symptoms and failure to thrive. However, C-BEF without esophageal atresia may be asymptomatic for years to decades.

Age at diagnosis ranges from 9 days to 83 years.³ Several explanations exist for the prolonged asymptomatic phase of this disease: (1) presence of a membrane overlying the fistula during childhood that subsequently ruptures; (2) presence of a proximal fold of esophageal mucosa overlapping the orifice; (3) antigravitational or upward extension of the fistulous tract from the esophagus; and (4) spasm of the smooth muscle of the fistula.⁴

Congenital bronchoesophageal fistula without esophageal atresia may be asymptomatic for years to decades.

Four subtypes. Type I fistulas are associated with a wide-necked congenital diverticulum of the esophagus, which may become inflamed and allow perforation into the nearby lung. Type II fistulas (most common) consist of a short tract running directly from the esophagus to a nearby lobar or segmental bronchus. Type III fistulas involve a communication between the esophagus and a cystic structure within the lung parenchyma. Type IV fistulas run from the esophagus into a sequestered pulmonary segment.¹ Our patient had a type II fistula.

Is there a nonspecific cough? The most common signs and symptoms of C-BEF are nonspecific cough, cough after ingestion of fluids or meals, and hemoptysis.^5,6 Symptoms may persist for decades prior to diagnosis, and the indolent course of C-BEF may lead to fatal complications such as recalcitrant pneumonia, bronchiectasis, and abscess formation.

Continue to: One test bests others for diagnosis

One test bests others for diagnosis. Plain chest x-ray may indicate enlarged lymph nodes or surrounding airspace disease but will not be able to identify a C-BEF. Computed tomography (CT) of the chest may detect the presence of a C-BEF but does not rule it out. Barium esophagram is the most sensitive test for BEF. Esophagoscopy and bronchoscopy may be helpful once the BEF has been identified, but neither has demonstrated reliability as a first-line test. In this particular case, the C-BEF was not seen on chest CT but was later detected on a thin barium esophagram.

To confirm the congenital nature of the fistula, histopathology should be examined. C-BEFs will have a mucosal layer and definitive muscularis layer within the fistulous tract.^3,5

Treatment. The preferred method of treatment for C-BEF is thoracotomy with resection of the fistula and insertion of a pleural or muscular flap graft to close the defects in the bronchus and esophagus.⁷ Alternatively, obliteration of the esophageal defect can be performed using biological glue or silver nitrate. Prognosis after surgical repair is excellent.

Our patient

Two weeks after hospital discharge, the patient was re-admitted for hydropneumothorax and underwent additional surgeries. Unfortunately, he died in the ICU due to a tension pneumothorax while intubated.

THE TAKEAWAY

C-BEF is a rare, insidious condition that may remain asymptomatic into adulthood. After common causes are ruled out, patients with adult-onset nonspecific cough, episodes of coughing after eating/drinking, and hemoptysis should be evaluated for BEF. The most useful diagnostic investigation is barium esophagram. Once C-BEF is identified, prompt surgical management is warranted. Because C-BEF persisting into adulthood is so rare, recommendations regarding diagnosis and treatment are based on expert opinion.

CORRESPONDENCE
Rade N. Pejic, MD, MMM, Department of Family Medicine, Tulane University School of Medicine, 1430 Tulane Avenue, Mailbox #8033, New Orleans, LA 70112; rpejic@tulane.edu.

THE CASE

A 36-year-old nonsmoking white man presented with an episodic 3-month history of dry cough and nasal allergy symptoms. He reported a past history of sinus allergies but no history of asthma. His illness began with a flu-like syndrome, and he had been treated with antibiotics (amoxicillin and azithromycin) and oral steroids (methylprednisolone) by 2 other physicians for “viral syndrome” and “bronchitis.”

The patient reported some tactile fever initially but none thereafter. Symptoms included episodic wheezing but no overt shortness of breath. In addition to the persistent dry cough, he complained of frequent sinus congestion, post-nasal drip, and sneezing. He became concerned when he noticed a fleck of blood in his phlegm.

Physical exam was unimpressive, except for nasal congestion. His breath sounds were clear. Chest x-ray showed a benign-appearing granuloma in the right lower lobe (no previous films available for comparison). Peak-flow measurements taken in the office were persistently low (58%-70%) but improved with steroids and inhaled albuterol.

Over the following 7 weeks, the patient experienced waxing and waning symptoms. At his follow-up visit, he appeared well; chest auscultation revealed normal breath sounds. He was treated with an additional round of antibiotics (levofloxacin), oral steroids, nasal steroids, and inhaled albuterol.

At 13 weeks from his initial presentation, he developed frank hemoptysis and was diagnosed with a right lower-lobe pneumonia in the emergency department. While hospitalized, his clinical status deteriorated, requiring chest tube placement for a large pleural effusion.

Shortly thereafter, he underwent right middle and lower lobectomies and decortication. Multiple organisms were cultured from the pleural fluid. Tuberculosis testing and acid-fast bacilli stains were negative. No malignant cells were identified. Pathologic examination of the resected lung tissue confirmed the chest x-ray finding of a benign calcified granuloma. Additional testing, including a thin barium esophagram, was performed.

THE DIAGNOSIS

Results of the esophagram revealed a congenital bronchoesophageal fistula (C-BEF) between the patient’s esophagus and right mainstem bronchus, located 15 cm distal to his trachea.

Continue to: DISCUSSION

 

 

DISCUSSION

Fistulous connections between the esophagus and bronchi are rare but may arise in the setting of malignancy, trauma, inflammation, or congenital malformation.¹ While the precise etiology of C-BEF remains unknown, it is believed to be a consequence of failed tracheoesophageal separation during the early stages of embryonic development.

Prevalence and epidemiology. C-BEF has been reported to occur in 1 in 3000 to 4000 live births, often with concomitant esophageal atresia.² Infants with esophageal atresia demonstrate clinically significant respiratory symptoms and failure to thrive. However, C-BEF without esophageal atresia may be asymptomatic for years to decades.

Age at diagnosis ranges from 9 days to 83 years.³ Several explanations exist for the prolonged asymptomatic phase of this disease: (1) presence of a membrane overlying the fistula during childhood that subsequently ruptures; (2) presence of a proximal fold of esophageal mucosa overlapping the orifice; (3) antigravitational or upward extension of the fistulous tract from the esophagus; and (4) spasm of the smooth muscle of the fistula.⁴

Congenital bronchoesophageal fistula without esophageal atresia may be asymptomatic for years to decades.

Four subtypes. Type I fistulas are associated with a wide-necked congenital diverticulum of the esophagus, which may become inflamed and allow perforation into the nearby lung. Type II fistulas (most common) consist of a short tract running directly from the esophagus to a nearby lobar or segmental bronchus. Type III fistulas involve a communication between the esophagus and a cystic structure within the lung parenchyma. Type IV fistulas run from the esophagus into a sequestered pulmonary segment.¹ Our patient had a type II fistula.

Is there a nonspecific cough? The most common signs and symptoms of C-BEF are nonspecific cough, cough after ingestion of fluids or meals, and hemoptysis.^5,6 Symptoms may persist for decades prior to diagnosis, and the indolent course of C-BEF may lead to fatal complications such as recalcitrant pneumonia, bronchiectasis, and abscess formation.

Continue to: One test bests others for diagnosis

One test bests others for diagnosis. Plain chest x-ray may indicate enlarged lymph nodes or surrounding airspace disease but will not be able to identify a C-BEF. Computed tomography (CT) of the chest may detect the presence of a C-BEF but does not rule it out. Barium esophagram is the most sensitive test for BEF. Esophagoscopy and bronchoscopy may be helpful once the BEF has been identified, but neither has demonstrated reliability as a first-line test. In this particular case, the C-BEF was not seen on chest CT but was later detected on a thin barium esophagram.

To confirm the congenital nature of the fistula, histopathology should be examined. C-BEFs will have a mucosal layer and definitive muscularis layer within the fistulous tract.^3,5

Treatment. The preferred method of treatment for C-BEF is thoracotomy with resection of the fistula and insertion of a pleural or muscular flap graft to close the defects in the bronchus and esophagus.⁷ Alternatively, obliteration of the esophageal defect can be performed using biological glue or silver nitrate. Prognosis after surgical repair is excellent.

Our patient

Two weeks after hospital discharge, the patient was re-admitted for hydropneumothorax and underwent additional surgeries. Unfortunately, he died in the ICU due to a tension pneumothorax while intubated.

THE TAKEAWAY

C-BEF is a rare, insidious condition that may remain asymptomatic into adulthood. After common causes are ruled out, patients with adult-onset nonspecific cough, episodes of coughing after eating/drinking, and hemoptysis should be evaluated for BEF. The most useful diagnostic investigation is barium esophagram. Once C-BEF is identified, prompt surgical management is warranted. Because C-BEF persisting into adulthood is so rare, recommendations regarding diagnosis and treatment are based on expert opinion.

CORRESPONDENCE
Rade N. Pejic, MD, MMM, Department of Family Medicine, Tulane University School of Medicine, 1430 Tulane Avenue, Mailbox #8033, New Orleans, LA 70112; rpejic@tulane.edu.

THE CASE

A 36-year-old nonsmoking white man presented with an episodic 3-month history of dry cough and nasal allergy symptoms. He reported a past history of sinus allergies but no history of asthma. His illness began with a flu-like syndrome, and he had been treated with antibiotics (amoxicillin and azithromycin) and oral steroids (methylprednisolone) by 2 other physicians for “viral syndrome” and “bronchitis.”

The patient reported some tactile fever initially but none thereafter. Symptoms included episodic wheezing but no overt shortness of breath. In addition to the persistent dry cough, he complained of frequent sinus congestion, post-nasal drip, and sneezing. He became concerned when he noticed a fleck of blood in his phlegm.

Physical exam was unimpressive, except for nasal congestion. His breath sounds were clear. Chest x-ray showed a benign-appearing granuloma in the right lower lobe (no previous films available for comparison). Peak-flow measurements taken in the office were persistently low (58%-70%) but improved with steroids and inhaled albuterol.

Over the following 7 weeks, the patient experienced waxing and waning symptoms. At his follow-up visit, he appeared well; chest auscultation revealed normal breath sounds. He was treated with an additional round of antibiotics (levofloxacin), oral steroids, nasal steroids, and inhaled albuterol.

At 13 weeks from his initial presentation, he developed frank hemoptysis and was diagnosed with a right lower-lobe pneumonia in the emergency department. While hospitalized, his clinical status deteriorated, requiring chest tube placement for a large pleural effusion.

Shortly thereafter, he underwent right middle and lower lobectomies and decortication. Multiple organisms were cultured from the pleural fluid. Tuberculosis testing and acid-fast bacilli stains were negative. No malignant cells were identified. Pathologic examination of the resected lung tissue confirmed the chest x-ray finding of a benign calcified granuloma. Additional testing, including a thin barium esophagram, was performed.

THE DIAGNOSIS

Results of the esophagram revealed a congenital bronchoesophageal fistula (C-BEF) between the patient’s esophagus and right mainstem bronchus, located 15 cm distal to his trachea.

Continue to: DISCUSSION

 

 

DISCUSSION

Fistulous connections between the esophagus and bronchi are rare but may arise in the setting of malignancy, trauma, inflammation, or congenital malformation.¹ While the precise etiology of C-BEF remains unknown, it is believed to be a consequence of failed tracheoesophageal separation during the early stages of embryonic development.

Prevalence and epidemiology. C-BEF has been reported to occur in 1 in 3000 to 4000 live births, often with concomitant esophageal atresia.² Infants with esophageal atresia demonstrate clinically significant respiratory symptoms and failure to thrive. However, C-BEF without esophageal atresia may be asymptomatic for years to decades.

Age at diagnosis ranges from 9 days to 83 years.³ Several explanations exist for the prolonged asymptomatic phase of this disease: (1) presence of a membrane overlying the fistula during childhood that subsequently ruptures; (2) presence of a proximal fold of esophageal mucosa overlapping the orifice; (3) antigravitational or upward extension of the fistulous tract from the esophagus; and (4) spasm of the smooth muscle of the fistula.⁴

Congenital bronchoesophageal fistula without esophageal atresia may be asymptomatic for years to decades.

Four subtypes. Type I fistulas are associated with a wide-necked congenital diverticulum of the esophagus, which may become inflamed and allow perforation into the nearby lung. Type II fistulas (most common) consist of a short tract running directly from the esophagus to a nearby lobar or segmental bronchus. Type III fistulas involve a communication between the esophagus and a cystic structure within the lung parenchyma. Type IV fistulas run from the esophagus into a sequestered pulmonary segment.¹ Our patient had a type II fistula.

Is there a nonspecific cough? The most common signs and symptoms of C-BEF are nonspecific cough, cough after ingestion of fluids or meals, and hemoptysis.^5,6 Symptoms may persist for decades prior to diagnosis, and the indolent course of C-BEF may lead to fatal complications such as recalcitrant pneumonia, bronchiectasis, and abscess formation.

Continue to: One test bests others for diagnosis

One test bests others for diagnosis. Plain chest x-ray may indicate enlarged lymph nodes or surrounding airspace disease but will not be able to identify a C-BEF. Computed tomography (CT) of the chest may detect the presence of a C-BEF but does not rule it out. Barium esophagram is the most sensitive test for BEF. Esophagoscopy and bronchoscopy may be helpful once the BEF has been identified, but neither has demonstrated reliability as a first-line test. In this particular case, the C-BEF was not seen on chest CT but was later detected on a thin barium esophagram.

To confirm the congenital nature of the fistula, histopathology should be examined. C-BEFs will have a mucosal layer and definitive muscularis layer within the fistulous tract.^3,5

Treatment. The preferred method of treatment for C-BEF is thoracotomy with resection of the fistula and insertion of a pleural or muscular flap graft to close the defects in the bronchus and esophagus.⁷ Alternatively, obliteration of the esophageal defect can be performed using biological glue or silver nitrate. Prognosis after surgical repair is excellent.

Our patient

Two weeks after hospital discharge, the patient was re-admitted for hydropneumothorax and underwent additional surgeries. Unfortunately, he died in the ICU due to a tension pneumothorax while intubated.

THE TAKEAWAY

C-BEF is a rare, insidious condition that may remain asymptomatic into adulthood. After common causes are ruled out, patients with adult-onset nonspecific cough, episodes of coughing after eating/drinking, and hemoptysis should be evaluated for BEF. The most useful diagnostic investigation is barium esophagram. Once C-BEF is identified, prompt surgical management is warranted. Because C-BEF persisting into adulthood is so rare, recommendations regarding diagnosis and treatment are based on expert opinion.

CORRESPONDENCE
Rade N. Pejic, MD, MMM, Department of Family Medicine, Tulane University School of Medicine, 1430 Tulane Avenue, Mailbox #8033, New Orleans, LA 70112; rpejic@tulane.edu.

An official with the World Health Organization (WHO) has stated that it appears to be “rare” that an asymptomatic individual can pass SARS-CoV-2 to someone else.

“From the data we have, it still seems to be rare that an asymptomatic person actually transmits onward to a secondary individual,” Maria Van Kerkhove, PhD, WHO’s COVID-19 technical lead and an infectious disease epidemiologist, said June 8 at a news briefing from the agency’s Geneva headquarters.

This announcement came on the heels of the publication of an analysis in the Annals of Internal Medicine, which suggested that as many as 40-45% of COVID-19 cases may be asymptomatic. In this paper, the authors, Daniel P. Oran, AM, and Eric J. Topol, MD, of the Scripps Research Translational Institute in La Jolla, Calif stated: “The likelihood that approximately 40%-45% of those infected with SARS-CoV-2 will remain asymptomatic suggests that the virus might have greater potential than previously estimated to spread silently and deeply through human populations.”

"The early data that we have assembled on the prevalence of asymptomatic SARS-CoV-2 infection suggest that this is a significant factor in the rapid progression of the COVID-19 pandemic," the authors concluded.

Dr. Van Kerkhove also made comments suggesting otherwise on Twitter, citing a new summary by WHO: “@WHO recently published a summary of transmission of #COVID19, incl. symptomatic, pre-symptomatic and asymptomatic transmission.”

She also tweeted the following lines from the WHO summary: “Comprehensive studies on transmission from asymptomatic individuals are difficult to conduct, but the available evidence from contact tracing reported by Member States suggests that asymptomatically-infected individuals are much less likely to transmit the virus than those who develop symptoms.” 

In an additional post, Dr. Van Kerkhove added: “In these data, it is important to breakdown truly asymptomatic vs pre-symptomatic vs mildly symptomatic... also to note that the [percentage] reported or estimated to be ‘asymptomatic’ is not the same as the [percentage] that are asymptomatic that actually transmit.”

In the paper published in the Annals of Internal Medicine, Mr. Oran and Dr. Topol analyzed data of asymptomatic individuals from 16 cohorts between April 19 and May 26, 2020 – a wide-ranging group consisting of residents of cities, health care workers, individuals in homeless shelters, obstetric patients, residents of a nursing home, crew members of aircraft carriers, passengers on cruise ships, and inmates in correctional facilities. Each cohort had varying rates of asymptomatic or presymptomatic cases..

When residents of Iceland were tested, 43 of 100 individuals who tested positive for SARS-CoV-2 did not show symptoms. In Vo’, Italy, 30 of 73 people (41.1%) with positive SARS-CoV-2 test results did not have symptoms in a first round of testing, and 13 of 29 (44.8%) had no symptoms in a second round of testing. Over half of residents of San Francisco’s Mission District who received testing (39 of 74; 52.7%) did not have symptoms, while slightly less than half of Indiana residents tested showed no symptoms (35 of 78; 44.8%).

A majority of 41 individuals (65.9%) who were mostly health care workers at Rutgers University reported no symptoms of COVID-19 at the time of testing. Data from homeless shelters in Boston (129 of 147; 87.7%) and Los Angeles (27 of 43; 62.7%) also showed a high rate of individuals without symptoms. Among 33 obstetric patients in New York City who tested positive for SARS-CoV-2, 29 women (87.9%) were asymptomatic during a median 2-day length of stay. In a Washington state nursing facility, 12 of 23 individuals (52.1%) were positive for SARS-CoV-2 without showing symptoms in a first round of testing, with another 15 of 24 residents (62.5%) not showing symptoms in a second round of testing. Of these residents, 24 individuals (88.9%) later went on to show symptoms of COVID-19.

SOURCE: Oran DP, Topol EJ. Ann Intern Med. 2020 Jun 3. doi: 10.7326/M20-3012.

This article was updated 6/8/20.

An official with the World Health Organization (WHO) has stated that it appears to be “rare” that an asymptomatic individual can pass SARS-CoV-2 to someone else.

“From the data we have, it still seems to be rare that an asymptomatic person actually transmits onward to a secondary individual,” Maria Van Kerkhove, PhD, WHO’s COVID-19 technical lead and an infectious disease epidemiologist, said June 8 at a news briefing from the agency’s Geneva headquarters.

This announcement came on the heels of the publication of an analysis in the Annals of Internal Medicine, which suggested that as many as 40-45% of COVID-19 cases may be asymptomatic. In this paper, the authors, Daniel P. Oran, AM, and Eric J. Topol, MD, of the Scripps Research Translational Institute in La Jolla, Calif stated: “The likelihood that approximately 40%-45% of those infected with SARS-CoV-2 will remain asymptomatic suggests that the virus might have greater potential than previously estimated to spread silently and deeply through human populations.”

"The early data that we have assembled on the prevalence of asymptomatic SARS-CoV-2 infection suggest that this is a significant factor in the rapid progression of the COVID-19 pandemic," the authors concluded.

Dr. Van Kerkhove also made comments suggesting otherwise on Twitter, citing a new summary by WHO: “@WHO recently published a summary of transmission of #COVID19, incl. symptomatic, pre-symptomatic and asymptomatic transmission.”

She also tweeted the following lines from the WHO summary: “Comprehensive studies on transmission from asymptomatic individuals are difficult to conduct, but the available evidence from contact tracing reported by Member States suggests that asymptomatically-infected individuals are much less likely to transmit the virus than those who develop symptoms.” 

In an additional post, Dr. Van Kerkhove added: “In these data, it is important to breakdown truly asymptomatic vs pre-symptomatic vs mildly symptomatic... also to note that the [percentage] reported or estimated to be ‘asymptomatic’ is not the same as the [percentage] that are asymptomatic that actually transmit.”

In the paper published in the Annals of Internal Medicine, Mr. Oran and Dr. Topol analyzed data of asymptomatic individuals from 16 cohorts between April 19 and May 26, 2020 – a wide-ranging group consisting of residents of cities, health care workers, individuals in homeless shelters, obstetric patients, residents of a nursing home, crew members of aircraft carriers, passengers on cruise ships, and inmates in correctional facilities. Each cohort had varying rates of asymptomatic or presymptomatic cases..

When residents of Iceland were tested, 43 of 100 individuals who tested positive for SARS-CoV-2 did not show symptoms. In Vo’, Italy, 30 of 73 people (41.1%) with positive SARS-CoV-2 test results did not have symptoms in a first round of testing, and 13 of 29 (44.8%) had no symptoms in a second round of testing. Over half of residents of San Francisco’s Mission District who received testing (39 of 74; 52.7%) did not have symptoms, while slightly less than half of Indiana residents tested showed no symptoms (35 of 78; 44.8%).

A majority of 41 individuals (65.9%) who were mostly health care workers at Rutgers University reported no symptoms of COVID-19 at the time of testing. Data from homeless shelters in Boston (129 of 147; 87.7%) and Los Angeles (27 of 43; 62.7%) also showed a high rate of individuals without symptoms. Among 33 obstetric patients in New York City who tested positive for SARS-CoV-2, 29 women (87.9%) were asymptomatic during a median 2-day length of stay. In a Washington state nursing facility, 12 of 23 individuals (52.1%) were positive for SARS-CoV-2 without showing symptoms in a first round of testing, with another 15 of 24 residents (62.5%) not showing symptoms in a second round of testing. Of these residents, 24 individuals (88.9%) later went on to show symptoms of COVID-19.

SOURCE: Oran DP, Topol EJ. Ann Intern Med. 2020 Jun 3. doi: 10.7326/M20-3012.

This article was updated 6/8/20.

An official with the World Health Organization (WHO) has stated that it appears to be “rare” that an asymptomatic individual can pass SARS-CoV-2 to someone else.

“From the data we have, it still seems to be rare that an asymptomatic person actually transmits onward to a secondary individual,” Maria Van Kerkhove, PhD, WHO’s COVID-19 technical lead and an infectious disease epidemiologist, said June 8 at a news briefing from the agency’s Geneva headquarters.

This announcement came on the heels of the publication of an analysis in the Annals of Internal Medicine, which suggested that as many as 40-45% of COVID-19 cases may be asymptomatic. In this paper, the authors, Daniel P. Oran, AM, and Eric J. Topol, MD, of the Scripps Research Translational Institute in La Jolla, Calif stated: “The likelihood that approximately 40%-45% of those infected with SARS-CoV-2 will remain asymptomatic suggests that the virus might have greater potential than previously estimated to spread silently and deeply through human populations.”

"The early data that we have assembled on the prevalence of asymptomatic SARS-CoV-2 infection suggest that this is a significant factor in the rapid progression of the COVID-19 pandemic," the authors concluded.

Dr. Van Kerkhove also made comments suggesting otherwise on Twitter, citing a new summary by WHO: “@WHO recently published a summary of transmission of #COVID19, incl. symptomatic, pre-symptomatic and asymptomatic transmission.”

She also tweeted the following lines from the WHO summary: “Comprehensive studies on transmission from asymptomatic individuals are difficult to conduct, but the available evidence from contact tracing reported by Member States suggests that asymptomatically-infected individuals are much less likely to transmit the virus than those who develop symptoms.” 

In an additional post, Dr. Van Kerkhove added: “In these data, it is important to breakdown truly asymptomatic vs pre-symptomatic vs mildly symptomatic... also to note that the [percentage] reported or estimated to be ‘asymptomatic’ is not the same as the [percentage] that are asymptomatic that actually transmit.”

In the paper published in the Annals of Internal Medicine, Mr. Oran and Dr. Topol analyzed data of asymptomatic individuals from 16 cohorts between April 19 and May 26, 2020 – a wide-ranging group consisting of residents of cities, health care workers, individuals in homeless shelters, obstetric patients, residents of a nursing home, crew members of aircraft carriers, passengers on cruise ships, and inmates in correctional facilities. Each cohort had varying rates of asymptomatic or presymptomatic cases..

When residents of Iceland were tested, 43 of 100 individuals who tested positive for SARS-CoV-2 did not show symptoms. In Vo’, Italy, 30 of 73 people (41.1%) with positive SARS-CoV-2 test results did not have symptoms in a first round of testing, and 13 of 29 (44.8%) had no symptoms in a second round of testing. Over half of residents of San Francisco’s Mission District who received testing (39 of 74; 52.7%) did not have symptoms, while slightly less than half of Indiana residents tested showed no symptoms (35 of 78; 44.8%).

A majority of 41 individuals (65.9%) who were mostly health care workers at Rutgers University reported no symptoms of COVID-19 at the time of testing. Data from homeless shelters in Boston (129 of 147; 87.7%) and Los Angeles (27 of 43; 62.7%) also showed a high rate of individuals without symptoms. Among 33 obstetric patients in New York City who tested positive for SARS-CoV-2, 29 women (87.9%) were asymptomatic during a median 2-day length of stay. In a Washington state nursing facility, 12 of 23 individuals (52.1%) were positive for SARS-CoV-2 without showing symptoms in a first round of testing, with another 15 of 24 residents (62.5%) not showing symptoms in a second round of testing. Of these residents, 24 individuals (88.9%) later went on to show symptoms of COVID-19.

SOURCE: Oran DP, Topol EJ. Ann Intern Med. 2020 Jun 3. doi: 10.7326/M20-3012.

This article was updated 6/8/20.

The Food and Drug Administration has approved Recarbrio (imipenem-cilastatin and relebactam) for the treatment of hospital-acquired and ventilator-associated bacterial pneumonia in people aged 18 years and older.

Approval for Recarbrio was based on results of a randomized, controlled clinical trial of 535 hospitalized adults with hospital-acquired and ventilator-associated bacterial pneumonia who received either Recarbrio or piperacillin-tazobactam. After 28 days, 16% of patients who received Recarbrio and 21% of patients who received piperacillin-tazobactam had died.

The most common adverse events associated with Recarbrio are increased alanine aminotransferase/ aspartate aminotransferase, anemia, diarrhea, hypokalemia, and hyponatremia. Recarbrio was previously approved by the FDA to treat patients with complicated urinary tract infections and complicated intra-abdominal infections who have limited or no alternative treatment options, according to an FDA press release.

“As a public health agency, the FDA addresses the threat of antimicrobial-resistant infections by facilitating the development of safe and effective new treatments. These efforts provide more options to fight serious bacterial infections and get new, safe and effective therapies to patients as soon as possible,” said Sumathi Nambiar, MD, MPH, director of the division of anti-infectives within the office of infectious disease at the Center for Drug Evaluation and Research.

lfranki@mdedge.com

The Food and Drug Administration has approved Recarbrio (imipenem-cilastatin and relebactam) for the treatment of hospital-acquired and ventilator-associated bacterial pneumonia in people aged 18 years and older.

Approval for Recarbrio was based on results of a randomized, controlled clinical trial of 535 hospitalized adults with hospital-acquired and ventilator-associated bacterial pneumonia who received either Recarbrio or piperacillin-tazobactam. After 28 days, 16% of patients who received Recarbrio and 21% of patients who received piperacillin-tazobactam had died.

The most common adverse events associated with Recarbrio are increased alanine aminotransferase/ aspartate aminotransferase, anemia, diarrhea, hypokalemia, and hyponatremia. Recarbrio was previously approved by the FDA to treat patients with complicated urinary tract infections and complicated intra-abdominal infections who have limited or no alternative treatment options, according to an FDA press release.

“As a public health agency, the FDA addresses the threat of antimicrobial-resistant infections by facilitating the development of safe and effective new treatments. These efforts provide more options to fight serious bacterial infections and get new, safe and effective therapies to patients as soon as possible,” said Sumathi Nambiar, MD, MPH, director of the division of anti-infectives within the office of infectious disease at the Center for Drug Evaluation and Research.

lfranki@mdedge.com

The Food and Drug Administration has approved Recarbrio (imipenem-cilastatin and relebactam) for the treatment of hospital-acquired and ventilator-associated bacterial pneumonia in people aged 18 years and older.

Approval for Recarbrio was based on results of a randomized, controlled clinical trial of 535 hospitalized adults with hospital-acquired and ventilator-associated bacterial pneumonia who received either Recarbrio or piperacillin-tazobactam. After 28 days, 16% of patients who received Recarbrio and 21% of patients who received piperacillin-tazobactam had died.

The most common adverse events associated with Recarbrio are increased alanine aminotransferase/ aspartate aminotransferase, anemia, diarrhea, hypokalemia, and hyponatremia. Recarbrio was previously approved by the FDA to treat patients with complicated urinary tract infections and complicated intra-abdominal infections who have limited or no alternative treatment options, according to an FDA press release.

“As a public health agency, the FDA addresses the threat of antimicrobial-resistant infections by facilitating the development of safe and effective new treatments. These efforts provide more options to fight serious bacterial infections and get new, safe and effective therapies to patients as soon as possible,” said Sumathi Nambiar, MD, MPH, director of the division of anti-infectives within the office of infectious disease at the Center for Drug Evaluation and Research.

lfranki@mdedge.com

The Lancet announced today that it has retracted a highly cited study that suggested hydroxychloroquine may cause more harm than benefit in patients with COVID-19. Hours later, the New England Journal of Medicine announced that it had retracted a second article by some of the same authors, also on heart disease and COVID-19.

The Lancet article, titled “Hydroxychloroquine or chloroquine with or without a macrolide for treatment of COVID-19: A multinational registry analysis” was originally published online May 22. The NEJM article, “Cardiovascular Disease, Drug Therapy, and Mortality in Covid-19” was initially published May 1.

Three authors of the Lancet article, Mandeep R. Mehra, MD, Frank Ruschitzka, MD, and Amit N. Patel, MD, wrote in a letter that the action came after concerns were raised about the integrity of the data, and about how the analysis was conducted by Chicago-based Surgisphere Corp and study coauthor Sapan Desai, MD, Surgisphere’s founder and CEO.

The authors asked for an independent third-party review of Surgisphere to evaluate the integrity of the trial elements and to replicate the analyses in the article.

“Our independent peer reviewers informed us that Surgisphere would not transfer the full dataset, client contracts, and the full ISO audit report to their servers for analysis, as such transfer would violate client agreements and confidentiality requirements,” the authors wrote.

Therefore, reviewers were not able to conduct the review and notified the authors they would withdraw from the peer-review process.

The Lancet said in a statement: “The Lancet takes issues of scientific integrity extremely seriously, and there are many outstanding questions about Surgisphere and the data that were allegedly included in this study. Following guidelines from the Committee on Publication Ethics and International Committee of Medical Journal Editors, institutional reviews of Surgisphere’s research collaborations are urgently needed.”

The authors wrote, “We can never forget the responsibility we have as researchers to scrupulously ensure that we rely on data sources that adhere to our high standards. Based on this development, we can no longer vouch for the veracity of the primary data sources. Due to this unfortunate development, the authors request that the paper be retracted.

“We all entered this collaboration to contribute in good faith and at a time of great need during the COVID-19 pandemic. We deeply apologize to you, the editors, and the journal readership for any embarrassment or inconvenience that this may have caused.”

In a similar, if briefer, note, the authors requested that the New England Journal of Medicine retract the earlier article as well. The retraction notice on the website reads: “Because all the authors were not granted access to the raw data and the raw data could not be made available to a third-party auditor, we are unable to validate the primary data sources underlying our article, ‘Cardiovascular Disease, Drug Therapy, and Mortality in Covid-19.’ We therefore request that the article be retracted. We apologize to the editors and to readers of the Journal for the difficulties that this has caused.”

Both journals had already published “Expression of Concern” notices about the articles. The expression of concern followed an open letter, endorsed by more than 200 scientists, ethicists, and clinicians and posted on May 28, questioning the data and ethics of the study.

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






 

The Lancet announced today that it has retracted a highly cited study that suggested hydroxychloroquine may cause more harm than benefit in patients with COVID-19. Hours later, the New England Journal of Medicine announced that it had retracted a second article by some of the same authors, also on heart disease and COVID-19.

The Lancet article, titled “Hydroxychloroquine or chloroquine with or without a macrolide for treatment of COVID-19: A multinational registry analysis” was originally published online May 22. The NEJM article, “Cardiovascular Disease, Drug Therapy, and Mortality in Covid-19” was initially published May 1.

Three authors of the Lancet article, Mandeep R. Mehra, MD, Frank Ruschitzka, MD, and Amit N. Patel, MD, wrote in a letter that the action came after concerns were raised about the integrity of the data, and about how the analysis was conducted by Chicago-based Surgisphere Corp and study coauthor Sapan Desai, MD, Surgisphere’s founder and CEO.

The authors asked for an independent third-party review of Surgisphere to evaluate the integrity of the trial elements and to replicate the analyses in the article.

“Our independent peer reviewers informed us that Surgisphere would not transfer the full dataset, client contracts, and the full ISO audit report to their servers for analysis, as such transfer would violate client agreements and confidentiality requirements,” the authors wrote.

Therefore, reviewers were not able to conduct the review and notified the authors they would withdraw from the peer-review process.

The Lancet said in a statement: “The Lancet takes issues of scientific integrity extremely seriously, and there are many outstanding questions about Surgisphere and the data that were allegedly included in this study. Following guidelines from the Committee on Publication Ethics and International Committee of Medical Journal Editors, institutional reviews of Surgisphere’s research collaborations are urgently needed.”

The authors wrote, “We can never forget the responsibility we have as researchers to scrupulously ensure that we rely on data sources that adhere to our high standards. Based on this development, we can no longer vouch for the veracity of the primary data sources. Due to this unfortunate development, the authors request that the paper be retracted.

“We all entered this collaboration to contribute in good faith and at a time of great need during the COVID-19 pandemic. We deeply apologize to you, the editors, and the journal readership for any embarrassment or inconvenience that this may have caused.”

In a similar, if briefer, note, the authors requested that the New England Journal of Medicine retract the earlier article as well. The retraction notice on the website reads: “Because all the authors were not granted access to the raw data and the raw data could not be made available to a third-party auditor, we are unable to validate the primary data sources underlying our article, ‘Cardiovascular Disease, Drug Therapy, and Mortality in Covid-19.’ We therefore request that the article be retracted. We apologize to the editors and to readers of the Journal for the difficulties that this has caused.”

Both journals had already published “Expression of Concern” notices about the articles. The expression of concern followed an open letter, endorsed by more than 200 scientists, ethicists, and clinicians and posted on May 28, questioning the data and ethics of the study.

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






 

The Lancet announced today that it has retracted a highly cited study that suggested hydroxychloroquine may cause more harm than benefit in patients with COVID-19. Hours later, the New England Journal of Medicine announced that it had retracted a second article by some of the same authors, also on heart disease and COVID-19.

The Lancet article, titled “Hydroxychloroquine or chloroquine with or without a macrolide for treatment of COVID-19: A multinational registry analysis” was originally published online May 22. The NEJM article, “Cardiovascular Disease, Drug Therapy, and Mortality in Covid-19” was initially published May 1.

Three authors of the Lancet article, Mandeep R. Mehra, MD, Frank Ruschitzka, MD, and Amit N. Patel, MD, wrote in a letter that the action came after concerns were raised about the integrity of the data, and about how the analysis was conducted by Chicago-based Surgisphere Corp and study coauthor Sapan Desai, MD, Surgisphere’s founder and CEO.

The authors asked for an independent third-party review of Surgisphere to evaluate the integrity of the trial elements and to replicate the analyses in the article.

“Our independent peer reviewers informed us that Surgisphere would not transfer the full dataset, client contracts, and the full ISO audit report to their servers for analysis, as such transfer would violate client agreements and confidentiality requirements,” the authors wrote.

Therefore, reviewers were not able to conduct the review and notified the authors they would withdraw from the peer-review process.

The Lancet said in a statement: “The Lancet takes issues of scientific integrity extremely seriously, and there are many outstanding questions about Surgisphere and the data that were allegedly included in this study. Following guidelines from the Committee on Publication Ethics and International Committee of Medical Journal Editors, institutional reviews of Surgisphere’s research collaborations are urgently needed.”

The authors wrote, “We can never forget the responsibility we have as researchers to scrupulously ensure that we rely on data sources that adhere to our high standards. Based on this development, we can no longer vouch for the veracity of the primary data sources. Due to this unfortunate development, the authors request that the paper be retracted.

“We all entered this collaboration to contribute in good faith and at a time of great need during the COVID-19 pandemic. We deeply apologize to you, the editors, and the journal readership for any embarrassment or inconvenience that this may have caused.”

In a similar, if briefer, note, the authors requested that the New England Journal of Medicine retract the earlier article as well. The retraction notice on the website reads: “Because all the authors were not granted access to the raw data and the raw data could not be made available to a third-party auditor, we are unable to validate the primary data sources underlying our article, ‘Cardiovascular Disease, Drug Therapy, and Mortality in Covid-19.’ We therefore request that the article be retracted. We apologize to the editors and to readers of the Journal for the difficulties that this has caused.”

Both journals had already published “Expression of Concern” notices about the articles. The expression of concern followed an open letter, endorsed by more than 200 scientists, ethicists, and clinicians and posted on May 28, questioning the data and ethics of the study.

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






 

Wearing a mask at home, even when everyone is feeling fine, might reduce the risk of frontline healthcare workers transmitting SARS-CoV-2 infection to their families, a recent study from China suggests. But the benefits might not outweigh the costs, according to several physicians interviewed.

“My gut reaction is that home mask use for healthcare workers would place an inordinately high burden on those healthcare workers and their families,” said Jeanne Noble, MD, an emergency care physician at the University of California, San Francisco. “Wearing a mask for a 10-hour shift already represents significant physical discomfort, causing sores across the nose and behind the ears. The emotional toll of the physical distance that comes with mask use, with limited facial expression, is also quite real.”

The suggested benefit of home mask use comes from research published online May 28 in BMJ Global Health. To assess predictors of household transmission of SARS-CoV-2 infection, Yu Wang, MD, of the Beijing Center for Disease Prevention and Control and colleagues conducted a retrospective study of 124 families in Beijing in which there was a confirmed case of COVID-19 as of February 21. The researchers surveyed family members by telephone about household hygiene and behaviors during the pandemic to examine risk factors for transmission.

During the 2 weeks following onset of the primary case, secondary transmission occurred in 41 families. Overall, 77 of 335 family members developed COVID-19.

A multivariable logistic regression analysis found that in households in which family members wore masks at home before the first person became ill, there was less likelihood of transmission of disease to a family member, compared with families in which no one wore a mask prior to illness onset.

“Facemasks were 79% effective and disinfection was 77% effective in preventing transmission,” the researchers report, “whilst close frequent contact in the household increased the risk of transmission 18 times, and diarrhea in the index patient increased the risk by four times.

However, wearing masks after symptom onset was not protective, according to the analysis. The findings support “universal face mask use, and also provides guidance on risk reduction for families living with someone in quarantine or isolation, and families of health workers, who may face ongoing risk,” the authors write.

Still, other precautions may be more important, experts say.

“I think by far the best way for healthcare professionals to protect their families is to carefully employ appropriate infection prevention measures at work,” said Mark E. Rupp, MD, chief of the Division of Infectious Diseases at Nebraska Medical Center in Omaha. “The combination of administrative interventions, engineering improvements, and personal protective equipment is very effective in preventing SARS-CoV-2 acquisition in the workplace.”

Many physicians already wear masks at home, and this study “only reemphasized the importance of doing so,” said Raghavendra Tirupathi, MD, medical director of Keystone Infectious Diseases in Chambersburg, Pennsylvania, who recently reviewed studies about masks and COVID-19.

Home mask use provides “one more layer of protection that might help mitigate the risk of transmission to family members,” Tirupathi said. But it does not obviate the need to follow other preventive measures, such as social distancing and proper hygiene.

But Rupp, whose advice on how healthcare workers can protect their families was recently highlighted by the American Medical Association, isn’t convinced. He said he won’t be adding home mask use to his list of recommendations. “It would be intrusive, cumbersome, and impractical to wear a mask in the home setting,” Rupp said in an interview.

However, when out in the community, all family members must protect one another by practicing social distancing, wearing masks, and practicing proper hand hygiene. “I also think that it is a good idea to have some masks on hand in case anyone does develop symptoms in the household and to wear them if a family member falls ill ― at least until testing can confirm COVID-19,” Rupp said. “If a family member does fall ill, masks for the ill person as well as the well persons would be indicated along with other home quarantine measures.”

For her part, Noble, who has provided guidance about proper mask use, said that targeted use of masks at home, such as around older visiting relatives or other more vulnerable family members, may be more realistic than continuous in-home use.

When a household member becomes ill, recommendations for preventing disease spread include having a sick family member sleep in a separate bedroom, using a separate bathroom, and wearing a mask when within 6 feet of other household members. They also should avoid sharing meals. “For a household member who is a medical provider, to follow these self-isolation precautions while at home for months on end would have a significant emotional toll,” Noble said in an email. “With no end in sight for the pandemic, perpetual mask use in both the private and public sphere strikes me as overwhelming ― I write this near the end of my 10-hour shift wearing both an N95 and surgical mask and counting the minutes before I can take them off!”

A limitation of the study was its reliance on telephone interviews, which are subject to recall bias, the authors note.

The study was funded by the Beijing Science and Technology Planning Project. The researchers have disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

Wearing a mask at home, even when everyone is feeling fine, might reduce the risk of frontline healthcare workers transmitting SARS-CoV-2 infection to their families, a recent study from China suggests. But the benefits might not outweigh the costs, according to several physicians interviewed.

“My gut reaction is that home mask use for healthcare workers would place an inordinately high burden on those healthcare workers and their families,” said Jeanne Noble, MD, an emergency care physician at the University of California, San Francisco. “Wearing a mask for a 10-hour shift already represents significant physical discomfort, causing sores across the nose and behind the ears. The emotional toll of the physical distance that comes with mask use, with limited facial expression, is also quite real.”

The suggested benefit of home mask use comes from research published online May 28 in BMJ Global Health. To assess predictors of household transmission of SARS-CoV-2 infection, Yu Wang, MD, of the Beijing Center for Disease Prevention and Control and colleagues conducted a retrospective study of 124 families in Beijing in which there was a confirmed case of COVID-19 as of February 21. The researchers surveyed family members by telephone about household hygiene and behaviors during the pandemic to examine risk factors for transmission.

During the 2 weeks following onset of the primary case, secondary transmission occurred in 41 families. Overall, 77 of 335 family members developed COVID-19.

A multivariable logistic regression analysis found that in households in which family members wore masks at home before the first person became ill, there was less likelihood of transmission of disease to a family member, compared with families in which no one wore a mask prior to illness onset.

“Facemasks were 79% effective and disinfection was 77% effective in preventing transmission,” the researchers report, “whilst close frequent contact in the household increased the risk of transmission 18 times, and diarrhea in the index patient increased the risk by four times.

However, wearing masks after symptom onset was not protective, according to the analysis. The findings support “universal face mask use, and also provides guidance on risk reduction for families living with someone in quarantine or isolation, and families of health workers, who may face ongoing risk,” the authors write.

Still, other precautions may be more important, experts say.

“I think by far the best way for healthcare professionals to protect their families is to carefully employ appropriate infection prevention measures at work,” said Mark E. Rupp, MD, chief of the Division of Infectious Diseases at Nebraska Medical Center in Omaha. “The combination of administrative interventions, engineering improvements, and personal protective equipment is very effective in preventing SARS-CoV-2 acquisition in the workplace.”

Many physicians already wear masks at home, and this study “only reemphasized the importance of doing so,” said Raghavendra Tirupathi, MD, medical director of Keystone Infectious Diseases in Chambersburg, Pennsylvania, who recently reviewed studies about masks and COVID-19.

Home mask use provides “one more layer of protection that might help mitigate the risk of transmission to family members,” Tirupathi said. But it does not obviate the need to follow other preventive measures, such as social distancing and proper hygiene.

But Rupp, whose advice on how healthcare workers can protect their families was recently highlighted by the American Medical Association, isn’t convinced. He said he won’t be adding home mask use to his list of recommendations. “It would be intrusive, cumbersome, and impractical to wear a mask in the home setting,” Rupp said in an interview.

However, when out in the community, all family members must protect one another by practicing social distancing, wearing masks, and practicing proper hand hygiene. “I also think that it is a good idea to have some masks on hand in case anyone does develop symptoms in the household and to wear them if a family member falls ill ― at least until testing can confirm COVID-19,” Rupp said. “If a family member does fall ill, masks for the ill person as well as the well persons would be indicated along with other home quarantine measures.”

For her part, Noble, who has provided guidance about proper mask use, said that targeted use of masks at home, such as around older visiting relatives or other more vulnerable family members, may be more realistic than continuous in-home use.

When a household member becomes ill, recommendations for preventing disease spread include having a sick family member sleep in a separate bedroom, using a separate bathroom, and wearing a mask when within 6 feet of other household members. They also should avoid sharing meals. “For a household member who is a medical provider, to follow these self-isolation precautions while at home for months on end would have a significant emotional toll,” Noble said in an email. “With no end in sight for the pandemic, perpetual mask use in both the private and public sphere strikes me as overwhelming ― I write this near the end of my 10-hour shift wearing both an N95 and surgical mask and counting the minutes before I can take them off!”

A limitation of the study was its reliance on telephone interviews, which are subject to recall bias, the authors note.

The study was funded by the Beijing Science and Technology Planning Project. The researchers have disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

Wearing a mask at home, even when everyone is feeling fine, might reduce the risk of frontline healthcare workers transmitting SARS-CoV-2 infection to their families, a recent study from China suggests. But the benefits might not outweigh the costs, according to several physicians interviewed.

“My gut reaction is that home mask use for healthcare workers would place an inordinately high burden on those healthcare workers and their families,” said Jeanne Noble, MD, an emergency care physician at the University of California, San Francisco. “Wearing a mask for a 10-hour shift already represents significant physical discomfort, causing sores across the nose and behind the ears. The emotional toll of the physical distance that comes with mask use, with limited facial expression, is also quite real.”

The suggested benefit of home mask use comes from research published online May 28 in BMJ Global Health. To assess predictors of household transmission of SARS-CoV-2 infection, Yu Wang, MD, of the Beijing Center for Disease Prevention and Control and colleagues conducted a retrospective study of 124 families in Beijing in which there was a confirmed case of COVID-19 as of February 21. The researchers surveyed family members by telephone about household hygiene and behaviors during the pandemic to examine risk factors for transmission.

During the 2 weeks following onset of the primary case, secondary transmission occurred in 41 families. Overall, 77 of 335 family members developed COVID-19.

A multivariable logistic regression analysis found that in households in which family members wore masks at home before the first person became ill, there was less likelihood of transmission of disease to a family member, compared with families in which no one wore a mask prior to illness onset.

“Facemasks were 79% effective and disinfection was 77% effective in preventing transmission,” the researchers report, “whilst close frequent contact in the household increased the risk of transmission 18 times, and diarrhea in the index patient increased the risk by four times.

However, wearing masks after symptom onset was not protective, according to the analysis. The findings support “universal face mask use, and also provides guidance on risk reduction for families living with someone in quarantine or isolation, and families of health workers, who may face ongoing risk,” the authors write.

Still, other precautions may be more important, experts say.

“I think by far the best way for healthcare professionals to protect their families is to carefully employ appropriate infection prevention measures at work,” said Mark E. Rupp, MD, chief of the Division of Infectious Diseases at Nebraska Medical Center in Omaha. “The combination of administrative interventions, engineering improvements, and personal protective equipment is very effective in preventing SARS-CoV-2 acquisition in the workplace.”

Many physicians already wear masks at home, and this study “only reemphasized the importance of doing so,” said Raghavendra Tirupathi, MD, medical director of Keystone Infectious Diseases in Chambersburg, Pennsylvania, who recently reviewed studies about masks and COVID-19.

Home mask use provides “one more layer of protection that might help mitigate the risk of transmission to family members,” Tirupathi said. But it does not obviate the need to follow other preventive measures, such as social distancing and proper hygiene.

But Rupp, whose advice on how healthcare workers can protect their families was recently highlighted by the American Medical Association, isn’t convinced. He said he won’t be adding home mask use to his list of recommendations. “It would be intrusive, cumbersome, and impractical to wear a mask in the home setting,” Rupp said in an interview.

However, when out in the community, all family members must protect one another by practicing social distancing, wearing masks, and practicing proper hand hygiene. “I also think that it is a good idea to have some masks on hand in case anyone does develop symptoms in the household and to wear them if a family member falls ill ― at least until testing can confirm COVID-19,” Rupp said. “If a family member does fall ill, masks for the ill person as well as the well persons would be indicated along with other home quarantine measures.”

For her part, Noble, who has provided guidance about proper mask use, said that targeted use of masks at home, such as around older visiting relatives or other more vulnerable family members, may be more realistic than continuous in-home use.

When a household member becomes ill, recommendations for preventing disease spread include having a sick family member sleep in a separate bedroom, using a separate bathroom, and wearing a mask when within 6 feet of other household members. They also should avoid sharing meals. “For a household member who is a medical provider, to follow these self-isolation precautions while at home for months on end would have a significant emotional toll,” Noble said in an email. “With no end in sight for the pandemic, perpetual mask use in both the private and public sphere strikes me as overwhelming ― I write this near the end of my 10-hour shift wearing both an N95 and surgical mask and counting the minutes before I can take them off!”

A limitation of the study was its reliance on telephone interviews, which are subject to recall bias, the authors note.

The study was funded by the Beijing Science and Technology Planning Project. The researchers have disclosed no relevant financial relationships.

This article first appeared on Medscape.com.

Exposure to maternal antenatal corticosteroid treatment is significantly associated with mental and behavioral disorders in children, compared with nonexposure, according to a Finnish population-based study published in JAMA. The findings may lead to changes in clinical practice, particularly for infants who may be born full term.

After adjustment for variables such as maternal age, smoking during pregnancy, any lifetime mental disorder diagnosis, and gestational age at birth, exposure to maternal antenatal corticosteroid treatment was significantly associated with mental and behavioral disorders in children, compared with nonexposure, with a hazard ratio of 1.33. Among children born at term, the adjusted hazard ratio was 1.47. Among preterm children, the hazard ratio was not significant.

“Although benefits of this therapy outweigh risks in the most vulnerable infants, this may not be true for all infants,” wrote Sara B. DeMauro, MD, an attending neonatologist and program director of the neonatal follow-up program at Children’s Hospital of Philadelphia, in an editorial also published in JAMA. “Recommendations to administer this therapy to broader populations of pregnant women may need to be reexamined until sufficient safety data, particularly among more mature infants, are available.”

Corticosteroid treatment to accelerate fetal maturation is standard care before 34 weeks’ gestation when there is a likelihood of delivery within 7 days, and studies have found that providing this therapy reduces the risk for respiratory problems when administered beyond 34 weeks. In 2016, updates to U.S. guidelines allowed for the use of corticosteroid treatment between 34 weeks and 36 weeks 6 days when women are at risk for preterm delivery within 7 days and have not received a previous course of antenatal corticosteroids.

The data from Finland indicate that “a significant number of very preterm children who might have benefited from this treatment did not receive it,” Dr. DeMauro wrote. At the same time, “45% of steroid-exposed infants were delivered at term. In these infants, minor short-term benefit may have been outweighed by significant longer-term risks. These data elucidate both the continuing struggle to accurately predict preterm birth and the incomplete uptake of an effective therapy that is beneficial when administered to the correct patients.”
 

Pause expanded use?

“Since the recommendations came out to expand the use of corticosteroids for preterm labor up until 37 weeks gestational age, my practice has incorporated these guidelines,” said Santina Wheat, MD, assistant professor of family and community medicine at Northwestern University in Chicago. “We have incorporated the guidelines though with the understanding that the benefits outweigh the risk. This article indicates that we may have been wrong in that understanding.” Although the association does not establish that the treatment causes mental and behavioral disorders, it “raises the question of whether we should halt this practice until additional information can be gathered,” noted Dr. Wheat, who also serves on the editorial advisory board of Family Practice News.

When administered before delivery of a very premature infant, corticosteroid therapy accelerates fetal lung maturation and helps prevent neonatal mortality, respiratory distress syndrome, and brain injury. Investigators demonstrated the benefits of antenatal corticosteroids in 1972, and the treatment – “one of the most important advances in perinatal care” – became widely used in the 1990s, Dr. DeMauro said.

To examine whether treatment exposure is associated with a risk of childhood mental and behavioral disorders and whether the risk is similar in infants born at term and preterm, Katri Räikkönen, PhD, a researcher at the University of Helsinki, and colleagues conducted a population-based retrospective study of more than 670,000 children.

The researchers identified all singleton pregnancies ending in a live birth in Finland during Jan. 1, 2006–Dec.31, 2017. In addition, they identified all consecutive maternal sibling pairs born at term, including sibling pairs discordant for maternal antenatal corticosteroid treatment exposure and sibling pairs concordant for treatment exposure or nonexposure. The investigators identified diagnoses of childhood mental and behavioral disorders using the Finnish Care Register for Health Care using ICD-10 codes on hospital inpatient and outpatient treatments by physicians in specialized medical care.
 

A range of disorders

In all, 670,097 infants with a median follow-up duration of 5.8 years were included in the analysis, and 14,868 (2.22%) were exposed to antenatal corticosteroids. Of the treatment-exposed children, about 45% were born at term. Of the nonexposed children, approximately 97% were born at term. Cumulative incidence rates for any mental and behavioral disorder were significantly higher for treatment-exposed children, compared with nonexposed children, in the entire cohort (12.01% vs. 6.45%; P less than .001) and in term-born children (8.89% vs. 6.31%; P less than .001).

In preterm children, the incidence rate of any mental and behavioral disorder was significantly higher among those with treatment exposure (14.59% vs. 10.71%; P less than .001). Associations persisted when the investigators focused on 241,621 sibling pairs, “suggesting that unmeasured familial confounding did not explain these associations,” the authors said.

“[In] the entire cohort and term-born children, treatment exposure ... was significantly associated with psychological development disorders; attention-deficit/hyperactivity or conduct disorders; mixed disorders of conduct and emotions, emotional disorders, disorders of social functioning or tic disorders; other behavioral or emotional disorders; and sleep disorders,” Dr. Räikkönen and colleagues reported. Among preterm-born, treatment-exposed children, the adjusted hazard ratio was significantly lower for intellectual disability and higher for sleep disorders.

Dr. DeMauro noted potential confounders in this observational study, including abnormal pregnancy events that lead clinicians to administer steroids. Such events “predispose the exposed children to adverse cognitive outcomes,” suggests some research. “Alternately, after a pregnancy at high risk for preterm delivery, families may perceive their children as vulnerable and therefore may be more likely to seek care and earlier diagnosis of mental or behavioral disorders,” Dr. DeMauro said.

The study was funded by the Academy of Finland, European Commission, Foundation for Pediatric Research, the Signe and Ane Gyllenberg Foundation, the Novo Nordisk Foundation, the Sigrid Juselius Foundation, and the Juho Vainio Foundation. The investigators and Dr. DeMauro had no conflict of interest disclosures.

jremaly@mdedge.com

SOURCE: Räikkönen K et al. JAMA. 2020;323(19):1924-33. doi: 10.1001/jama.2020.3937.

Exposure to maternal antenatal corticosteroid treatment is significantly associated with mental and behavioral disorders in children, compared with nonexposure, according to a Finnish population-based study published in JAMA. The findings may lead to changes in clinical practice, particularly for infants who may be born full term.

After adjustment for variables such as maternal age, smoking during pregnancy, any lifetime mental disorder diagnosis, and gestational age at birth, exposure to maternal antenatal corticosteroid treatment was significantly associated with mental and behavioral disorders in children, compared with nonexposure, with a hazard ratio of 1.33. Among children born at term, the adjusted hazard ratio was 1.47. Among preterm children, the hazard ratio was not significant.

“Although benefits of this therapy outweigh risks in the most vulnerable infants, this may not be true for all infants,” wrote Sara B. DeMauro, MD, an attending neonatologist and program director of the neonatal follow-up program at Children’s Hospital of Philadelphia, in an editorial also published in JAMA. “Recommendations to administer this therapy to broader populations of pregnant women may need to be reexamined until sufficient safety data, particularly among more mature infants, are available.”

Corticosteroid treatment to accelerate fetal maturation is standard care before 34 weeks’ gestation when there is a likelihood of delivery within 7 days, and studies have found that providing this therapy reduces the risk for respiratory problems when administered beyond 34 weeks. In 2016, updates to U.S. guidelines allowed for the use of corticosteroid treatment between 34 weeks and 36 weeks 6 days when women are at risk for preterm delivery within 7 days and have not received a previous course of antenatal corticosteroids.

The data from Finland indicate that “a significant number of very preterm children who might have benefited from this treatment did not receive it,” Dr. DeMauro wrote. At the same time, “45% of steroid-exposed infants were delivered at term. In these infants, minor short-term benefit may have been outweighed by significant longer-term risks. These data elucidate both the continuing struggle to accurately predict preterm birth and the incomplete uptake of an effective therapy that is beneficial when administered to the correct patients.”
 

Pause expanded use?

“Since the recommendations came out to expand the use of corticosteroids for preterm labor up until 37 weeks gestational age, my practice has incorporated these guidelines,” said Santina Wheat, MD, assistant professor of family and community medicine at Northwestern University in Chicago. “We have incorporated the guidelines though with the understanding that the benefits outweigh the risk. This article indicates that we may have been wrong in that understanding.” Although the association does not establish that the treatment causes mental and behavioral disorders, it “raises the question of whether we should halt this practice until additional information can be gathered,” noted Dr. Wheat, who also serves on the editorial advisory board of Family Practice News.

When administered before delivery of a very premature infant, corticosteroid therapy accelerates fetal lung maturation and helps prevent neonatal mortality, respiratory distress syndrome, and brain injury. Investigators demonstrated the benefits of antenatal corticosteroids in 1972, and the treatment – “one of the most important advances in perinatal care” – became widely used in the 1990s, Dr. DeMauro said.

To examine whether treatment exposure is associated with a risk of childhood mental and behavioral disorders and whether the risk is similar in infants born at term and preterm, Katri Räikkönen, PhD, a researcher at the University of Helsinki, and colleagues conducted a population-based retrospective study of more than 670,000 children.

The researchers identified all singleton pregnancies ending in a live birth in Finland during Jan. 1, 2006–Dec.31, 2017. In addition, they identified all consecutive maternal sibling pairs born at term, including sibling pairs discordant for maternal antenatal corticosteroid treatment exposure and sibling pairs concordant for treatment exposure or nonexposure. The investigators identified diagnoses of childhood mental and behavioral disorders using the Finnish Care Register for Health Care using ICD-10 codes on hospital inpatient and outpatient treatments by physicians in specialized medical care.
 

A range of disorders

In all, 670,097 infants with a median follow-up duration of 5.8 years were included in the analysis, and 14,868 (2.22%) were exposed to antenatal corticosteroids. Of the treatment-exposed children, about 45% were born at term. Of the nonexposed children, approximately 97% were born at term. Cumulative incidence rates for any mental and behavioral disorder were significantly higher for treatment-exposed children, compared with nonexposed children, in the entire cohort (12.01% vs. 6.45%; P less than .001) and in term-born children (8.89% vs. 6.31%; P less than .001).

In preterm children, the incidence rate of any mental and behavioral disorder was significantly higher among those with treatment exposure (14.59% vs. 10.71%; P less than .001). Associations persisted when the investigators focused on 241,621 sibling pairs, “suggesting that unmeasured familial confounding did not explain these associations,” the authors said.

“[In] the entire cohort and term-born children, treatment exposure ... was significantly associated with psychological development disorders; attention-deficit/hyperactivity or conduct disorders; mixed disorders of conduct and emotions, emotional disorders, disorders of social functioning or tic disorders; other behavioral or emotional disorders; and sleep disorders,” Dr. Räikkönen and colleagues reported. Among preterm-born, treatment-exposed children, the adjusted hazard ratio was significantly lower for intellectual disability and higher for sleep disorders.

Dr. DeMauro noted potential confounders in this observational study, including abnormal pregnancy events that lead clinicians to administer steroids. Such events “predispose the exposed children to adverse cognitive outcomes,” suggests some research. “Alternately, after a pregnancy at high risk for preterm delivery, families may perceive their children as vulnerable and therefore may be more likely to seek care and earlier diagnosis of mental or behavioral disorders,” Dr. DeMauro said.

The study was funded by the Academy of Finland, European Commission, Foundation for Pediatric Research, the Signe and Ane Gyllenberg Foundation, the Novo Nordisk Foundation, the Sigrid Juselius Foundation, and the Juho Vainio Foundation. The investigators and Dr. DeMauro had no conflict of interest disclosures.

jremaly@mdedge.com

SOURCE: Räikkönen K et al. JAMA. 2020;323(19):1924-33. doi: 10.1001/jama.2020.3937.

Exposure to maternal antenatal corticosteroid treatment is significantly associated with mental and behavioral disorders in children, compared with nonexposure, according to a Finnish population-based study published in JAMA. The findings may lead to changes in clinical practice, particularly for infants who may be born full term.

After adjustment for variables such as maternal age, smoking during pregnancy, any lifetime mental disorder diagnosis, and gestational age at birth, exposure to maternal antenatal corticosteroid treatment was significantly associated with mental and behavioral disorders in children, compared with nonexposure, with a hazard ratio of 1.33. Among children born at term, the adjusted hazard ratio was 1.47. Among preterm children, the hazard ratio was not significant.

“Although benefits of this therapy outweigh risks in the most vulnerable infants, this may not be true for all infants,” wrote Sara B. DeMauro, MD, an attending neonatologist and program director of the neonatal follow-up program at Children’s Hospital of Philadelphia, in an editorial also published in JAMA. “Recommendations to administer this therapy to broader populations of pregnant women may need to be reexamined until sufficient safety data, particularly among more mature infants, are available.”

Corticosteroid treatment to accelerate fetal maturation is standard care before 34 weeks’ gestation when there is a likelihood of delivery within 7 days, and studies have found that providing this therapy reduces the risk for respiratory problems when administered beyond 34 weeks. In 2016, updates to U.S. guidelines allowed for the use of corticosteroid treatment between 34 weeks and 36 weeks 6 days when women are at risk for preterm delivery within 7 days and have not received a previous course of antenatal corticosteroids.

The data from Finland indicate that “a significant number of very preterm children who might have benefited from this treatment did not receive it,” Dr. DeMauro wrote. At the same time, “45% of steroid-exposed infants were delivered at term. In these infants, minor short-term benefit may have been outweighed by significant longer-term risks. These data elucidate both the continuing struggle to accurately predict preterm birth and the incomplete uptake of an effective therapy that is beneficial when administered to the correct patients.”
 

Pause expanded use?

“Since the recommendations came out to expand the use of corticosteroids for preterm labor up until 37 weeks gestational age, my practice has incorporated these guidelines,” said Santina Wheat, MD, assistant professor of family and community medicine at Northwestern University in Chicago. “We have incorporated the guidelines though with the understanding that the benefits outweigh the risk. This article indicates that we may have been wrong in that understanding.” Although the association does not establish that the treatment causes mental and behavioral disorders, it “raises the question of whether we should halt this practice until additional information can be gathered,” noted Dr. Wheat, who also serves on the editorial advisory board of Family Practice News.

When administered before delivery of a very premature infant, corticosteroid therapy accelerates fetal lung maturation and helps prevent neonatal mortality, respiratory distress syndrome, and brain injury. Investigators demonstrated the benefits of antenatal corticosteroids in 1972, and the treatment – “one of the most important advances in perinatal care” – became widely used in the 1990s, Dr. DeMauro said.

To examine whether treatment exposure is associated with a risk of childhood mental and behavioral disorders and whether the risk is similar in infants born at term and preterm, Katri Räikkönen, PhD, a researcher at the University of Helsinki, and colleagues conducted a population-based retrospective study of more than 670,000 children.

The researchers identified all singleton pregnancies ending in a live birth in Finland during Jan. 1, 2006–Dec.31, 2017. In addition, they identified all consecutive maternal sibling pairs born at term, including sibling pairs discordant for maternal antenatal corticosteroid treatment exposure and sibling pairs concordant for treatment exposure or nonexposure. The investigators identified diagnoses of childhood mental and behavioral disorders using the Finnish Care Register for Health Care using ICD-10 codes on hospital inpatient and outpatient treatments by physicians in specialized medical care.
 

A range of disorders

In all, 670,097 infants with a median follow-up duration of 5.8 years were included in the analysis, and 14,868 (2.22%) were exposed to antenatal corticosteroids. Of the treatment-exposed children, about 45% were born at term. Of the nonexposed children, approximately 97% were born at term. Cumulative incidence rates for any mental and behavioral disorder were significantly higher for treatment-exposed children, compared with nonexposed children, in the entire cohort (12.01% vs. 6.45%; P less than .001) and in term-born children (8.89% vs. 6.31%; P less than .001).

In preterm children, the incidence rate of any mental and behavioral disorder was significantly higher among those with treatment exposure (14.59% vs. 10.71%; P less than .001). Associations persisted when the investigators focused on 241,621 sibling pairs, “suggesting that unmeasured familial confounding did not explain these associations,” the authors said.

“[In] the entire cohort and term-born children, treatment exposure ... was significantly associated with psychological development disorders; attention-deficit/hyperactivity or conduct disorders; mixed disorders of conduct and emotions, emotional disorders, disorders of social functioning or tic disorders; other behavioral or emotional disorders; and sleep disorders,” Dr. Räikkönen and colleagues reported. Among preterm-born, treatment-exposed children, the adjusted hazard ratio was significantly lower for intellectual disability and higher for sleep disorders.

Dr. DeMauro noted potential confounders in this observational study, including abnormal pregnancy events that lead clinicians to administer steroids. Such events “predispose the exposed children to adverse cognitive outcomes,” suggests some research. “Alternately, after a pregnancy at high risk for preterm delivery, families may perceive their children as vulnerable and therefore may be more likely to seek care and earlier diagnosis of mental or behavioral disorders,” Dr. DeMauro said.

The study was funded by the Academy of Finland, European Commission, Foundation for Pediatric Research, the Signe and Ane Gyllenberg Foundation, the Novo Nordisk Foundation, the Sigrid Juselius Foundation, and the Juho Vainio Foundation. The investigators and Dr. DeMauro had no conflict of interest disclosures.

jremaly@mdedge.com

SOURCE: Räikkönen K et al. JAMA. 2020;323(19):1924-33. doi: 10.1001/jama.2020.3937.

For well over a decade the elevated risk of pneumonia from inhaled corticosteroids for moderate to very severe COPD has been well documented, although the pneumonia risks from different types of ICSs have not been well understood.

Researchers from Taiwan have taken a step in to investigate this question with a nationwide cohort study that reported inhalers with budesonide and beclomethasone may have a lower pneumonia risk than that of fluticasone propionate/salmeterol inhalers (CHEST. 2020;157:117-29).

The study is the first to include beclomethasone-containing inhalers in a comparison of ICS/long-acting beta2-agonist (LABA) fixed combinations to evaluate pneumonia risk, along with dose and drug properties, wrote Ting-Yu Chang, MS, of the Graduate Institute of Clinical Pharmacology at the College of Medicine, National Taiwan University in Taipei, and colleagues.

The study evaluated 42,393 people with COPD in the National Health Insurance Research Database who got at least two continuous prescriptions for three different types of inhalers:

• Budesonide/formoterol (BUD/FOR).
• Beclomethasone/formoterol (BEC/FOR).
• Fluticasone propionate/salmeterol (FLU/SAL).

The study included patients aged 40 years and older who used a metered-dose inhaler (MDI) or dry-powder inhaler (DPI) between January 2011 and June 2015.

Patient experience with adverse events (AEs) was a factor in risk stratification, Mr. Chang and colleagues noted. “For the comparison between the BEC/FOR MDI and FLU/SAL MDI, the lower risk associated with the BEC/FOR MDI was more prominent in patients without severe AE in the past year,” they wrote.

The study found that BUD/FOR DPI users had a 17% lower risk of severe pneumonia and a 12% lower risk of severe AEs than that of FLU/SAL DPI users. The risk difference in pneumonia remained significant after adjustment for the ICS-equivalent daily dose, but the spread for AEs didn’t.

BEC/FOR MDI users were 31% less likely to get severe pneumonia and 18% less likely to have severe AEs than were FLU/SAL MDI users, but that difference declined and became nonsignificant after adjustment for the ICS-equivalent daily dose.

The study also found that a high average daily dose (> 500 mcg/d) of FLU/SAL MDI carried a 66% greater risk of severe pneumonia, compared with that of low-dose users. Also, medium-dose BEC/FOR MDI users (FLU equivalent 299-499 mcg/d) had a 38% greater risk of severe pneumonia than low-dose (< 200 mcg/d) users.

The variable pneumonia risks may be linked to each ICS’s pharmacokinetics, specifically their distinct lipophilic properties, Mr. Chang and colleagues wrote. Fluticasone propionate is known to be more lipophilic than budesonide, and while beclomethasone is more lipophilic than both, as a prodrug it rapidly converts to lower lipophilicity upon contact with bronchial secretions. “In general, a lipophilic ICS has a longer retention time within the airway or lung tissue to exert local immunosuppression and reduce inflammation,” Mr. Chang and colleagues stated.

The Taiwan Ministry of Science and Technology provided partial support for the study. Mr. Chang and colleagues have no relationships to disclose.

SOURCE: Chang TY et al. CHEST. 2020;157:117-29.

For well over a decade the elevated risk of pneumonia from inhaled corticosteroids for moderate to very severe COPD has been well documented, although the pneumonia risks from different types of ICSs have not been well understood.

Researchers from Taiwan have taken a step in to investigate this question with a nationwide cohort study that reported inhalers with budesonide and beclomethasone may have a lower pneumonia risk than that of fluticasone propionate/salmeterol inhalers (CHEST. 2020;157:117-29).

The study is the first to include beclomethasone-containing inhalers in a comparison of ICS/long-acting beta2-agonist (LABA) fixed combinations to evaluate pneumonia risk, along with dose and drug properties, wrote Ting-Yu Chang, MS, of the Graduate Institute of Clinical Pharmacology at the College of Medicine, National Taiwan University in Taipei, and colleagues.

The study evaluated 42,393 people with COPD in the National Health Insurance Research Database who got at least two continuous prescriptions for three different types of inhalers:

• Budesonide/formoterol (BUD/FOR).
• Beclomethasone/formoterol (BEC/FOR).
• Fluticasone propionate/salmeterol (FLU/SAL).

The study included patients aged 40 years and older who used a metered-dose inhaler (MDI) or dry-powder inhaler (DPI) between January 2011 and June 2015.

Patient experience with adverse events (AEs) was a factor in risk stratification, Mr. Chang and colleagues noted. “For the comparison between the BEC/FOR MDI and FLU/SAL MDI, the lower risk associated with the BEC/FOR MDI was more prominent in patients without severe AE in the past year,” they wrote.

The study found that BUD/FOR DPI users had a 17% lower risk of severe pneumonia and a 12% lower risk of severe AEs than that of FLU/SAL DPI users. The risk difference in pneumonia remained significant after adjustment for the ICS-equivalent daily dose, but the spread for AEs didn’t.

BEC/FOR MDI users were 31% less likely to get severe pneumonia and 18% less likely to have severe AEs than were FLU/SAL MDI users, but that difference declined and became nonsignificant after adjustment for the ICS-equivalent daily dose.

The study also found that a high average daily dose (> 500 mcg/d) of FLU/SAL MDI carried a 66% greater risk of severe pneumonia, compared with that of low-dose users. Also, medium-dose BEC/FOR MDI users (FLU equivalent 299-499 mcg/d) had a 38% greater risk of severe pneumonia than low-dose (< 200 mcg/d) users.

The variable pneumonia risks may be linked to each ICS’s pharmacokinetics, specifically their distinct lipophilic properties, Mr. Chang and colleagues wrote. Fluticasone propionate is known to be more lipophilic than budesonide, and while beclomethasone is more lipophilic than both, as a prodrug it rapidly converts to lower lipophilicity upon contact with bronchial secretions. “In general, a lipophilic ICS has a longer retention time within the airway or lung tissue to exert local immunosuppression and reduce inflammation,” Mr. Chang and colleagues stated.

The Taiwan Ministry of Science and Technology provided partial support for the study. Mr. Chang and colleagues have no relationships to disclose.

SOURCE: Chang TY et al. CHEST. 2020;157:117-29.

For well over a decade the elevated risk of pneumonia from inhaled corticosteroids for moderate to very severe COPD has been well documented, although the pneumonia risks from different types of ICSs have not been well understood.

Researchers from Taiwan have taken a step in to investigate this question with a nationwide cohort study that reported inhalers with budesonide and beclomethasone may have a lower pneumonia risk than that of fluticasone propionate/salmeterol inhalers (CHEST. 2020;157:117-29).

The study is the first to include beclomethasone-containing inhalers in a comparison of ICS/long-acting beta2-agonist (LABA) fixed combinations to evaluate pneumonia risk, along with dose and drug properties, wrote Ting-Yu Chang, MS, of the Graduate Institute of Clinical Pharmacology at the College of Medicine, National Taiwan University in Taipei, and colleagues.

The study evaluated 42,393 people with COPD in the National Health Insurance Research Database who got at least two continuous prescriptions for three different types of inhalers:

• Budesonide/formoterol (BUD/FOR).
• Beclomethasone/formoterol (BEC/FOR).
• Fluticasone propionate/salmeterol (FLU/SAL).

The study included patients aged 40 years and older who used a metered-dose inhaler (MDI) or dry-powder inhaler (DPI) between January 2011 and June 2015.

Patient experience with adverse events (AEs) was a factor in risk stratification, Mr. Chang and colleagues noted. “For the comparison between the BEC/FOR MDI and FLU/SAL MDI, the lower risk associated with the BEC/FOR MDI was more prominent in patients without severe AE in the past year,” they wrote.

The study found that BUD/FOR DPI users had a 17% lower risk of severe pneumonia and a 12% lower risk of severe AEs than that of FLU/SAL DPI users. The risk difference in pneumonia remained significant after adjustment for the ICS-equivalent daily dose, but the spread for AEs didn’t.

BEC/FOR MDI users were 31% less likely to get severe pneumonia and 18% less likely to have severe AEs than were FLU/SAL MDI users, but that difference declined and became nonsignificant after adjustment for the ICS-equivalent daily dose.

The study also found that a high average daily dose (> 500 mcg/d) of FLU/SAL MDI carried a 66% greater risk of severe pneumonia, compared with that of low-dose users. Also, medium-dose BEC/FOR MDI users (FLU equivalent 299-499 mcg/d) had a 38% greater risk of severe pneumonia than low-dose (< 200 mcg/d) users.

The variable pneumonia risks may be linked to each ICS’s pharmacokinetics, specifically their distinct lipophilic properties, Mr. Chang and colleagues wrote. Fluticasone propionate is known to be more lipophilic than budesonide, and while beclomethasone is more lipophilic than both, as a prodrug it rapidly converts to lower lipophilicity upon contact with bronchial secretions. “In general, a lipophilic ICS has a longer retention time within the airway or lung tissue to exert local immunosuppression and reduce inflammation,” Mr. Chang and colleagues stated.

The Taiwan Ministry of Science and Technology provided partial support for the study. Mr. Chang and colleagues have no relationships to disclose.

SOURCE: Chang TY et al. CHEST. 2020;157:117-29.

Among patients with COPD, the presence of hypogammaglobulinemia confers a nearly 30% increased risk of hospitalization, results from a pooled analysis of four studies showed.

“Mechanistic studies are still warranted to better elucidate how IgG and other immunoglobulins, in particular IgA, may contribute to the local airway host defense,” researchers led by Fernando Sergio Leitao Filho, MD, PhD, wrote in a study published in Chest (2020 May 18. doi: 10.1016/j.chest.2020.04.058). “Nevertheless, our results raise the possibility that, in select COPD patients, IgG replacement therapy may be effective in reducing the risk of COPD hospitalizations. Given the growing rate of COPD hospitalization in the U.S. and elsewhere, there is a pressing need for a large well-designed trial to test this hypothesis.”

In an effort to evaluate the effect of IgG levels on the cumulative incidence of COPD hospitalizations, Dr. Leitao Filho, of the University of British Columbia, Vancouver, and colleagues drew from 2,259 patients who participated in four different trials: Azithromycin for Prevention of Exacerbations of COPD (MACRO), Simvastatin for the Prevention of Exacerbations in Moderate and Severe COPD (STATCOPE), the Long-Term Oxygen Treatment Trial (LOTT), and COPD Activity: Serotonin Transporter, Cytokines and Depression (CASCADE). The mean baseline age of study participants was 66 years, and 641 (28.4%) had hypogammaglobulinemia, which was defined as having a serum IgG levels of less than 7.0 g/L, while the remainder had normal IgG levels.

The pooled meta-analysis, which is believed to be the largest of its kind, revealed that the presence of hypogammaglobulinemia was associated with an incidence of COPD hospitalizations that was 1.29-fold higher than that observed among participants who had normal IgG levels (P = .01). The incidence was even higher among patients with prior COPD admissions (pooled subdistribution hazard ratio, 1.58; P < .01), yet the risk of COPD admissions was similar between IgG groups in patients with no prior hospitalizations (pooled SHR, 1.15; P = .34). Patients with hypogammaglobulinemia also showed significantly higher rates of COPD hospitalizations per person-year, compared with their counterparts who had normal IgG levels (0.48 vs. 0.29, respectively; P < .001.)

The authors acknowledged certain limitations of the study, including the fact that they measured serum IgG levels only at baseline “when participants were clinically stable; thus, the variability of IgG levels in a given individual over time and during the course of an AECOPD [severe acute exacerbation of COPD] is uncertain. Secondly, clinical data on corticosteroid use (formulations, dose, and length of use) were not readily available. However, systemic steroid use (one or more courses due to AECOPD prior to study entry) was accounted for in our analyses.”

The MACRO, STATCOPE, LOTT trials, and the CASCADE cohort were supported by the National Heart, Lung, and Blood Institute; National Institutes of Health; and Department of Health & Human Services. The current study was funded by the Canadian Institutes of Health Research and BC Lung Association. The authors reported having no relevant disclosures.

SOURCE: Leitao Filho SF et al. Chest. 2020 May 18. doi: 10.1016/j.chest.2020.04.058.

Among patients with COPD, the presence of hypogammaglobulinemia confers a nearly 30% increased risk of hospitalization, results from a pooled analysis of four studies showed.

“Mechanistic studies are still warranted to better elucidate how IgG and other immunoglobulins, in particular IgA, may contribute to the local airway host defense,” researchers led by Fernando Sergio Leitao Filho, MD, PhD, wrote in a study published in Chest (2020 May 18. doi: 10.1016/j.chest.2020.04.058). “Nevertheless, our results raise the possibility that, in select COPD patients, IgG replacement therapy may be effective in reducing the risk of COPD hospitalizations. Given the growing rate of COPD hospitalization in the U.S. and elsewhere, there is a pressing need for a large well-designed trial to test this hypothesis.”

In an effort to evaluate the effect of IgG levels on the cumulative incidence of COPD hospitalizations, Dr. Leitao Filho, of the University of British Columbia, Vancouver, and colleagues drew from 2,259 patients who participated in four different trials: Azithromycin for Prevention of Exacerbations of COPD (MACRO), Simvastatin for the Prevention of Exacerbations in Moderate and Severe COPD (STATCOPE), the Long-Term Oxygen Treatment Trial (LOTT), and COPD Activity: Serotonin Transporter, Cytokines and Depression (CASCADE). The mean baseline age of study participants was 66 years, and 641 (28.4%) had hypogammaglobulinemia, which was defined as having a serum IgG levels of less than 7.0 g/L, while the remainder had normal IgG levels.

The pooled meta-analysis, which is believed to be the largest of its kind, revealed that the presence of hypogammaglobulinemia was associated with an incidence of COPD hospitalizations that was 1.29-fold higher than that observed among participants who had normal IgG levels (P = .01). The incidence was even higher among patients with prior COPD admissions (pooled subdistribution hazard ratio, 1.58; P < .01), yet the risk of COPD admissions was similar between IgG groups in patients with no prior hospitalizations (pooled SHR, 1.15; P = .34). Patients with hypogammaglobulinemia also showed significantly higher rates of COPD hospitalizations per person-year, compared with their counterparts who had normal IgG levels (0.48 vs. 0.29, respectively; P < .001.)

The authors acknowledged certain limitations of the study, including the fact that they measured serum IgG levels only at baseline “when participants were clinically stable; thus, the variability of IgG levels in a given individual over time and during the course of an AECOPD [severe acute exacerbation of COPD] is uncertain. Secondly, clinical data on corticosteroid use (formulations, dose, and length of use) were not readily available. However, systemic steroid use (one or more courses due to AECOPD prior to study entry) was accounted for in our analyses.”

The MACRO, STATCOPE, LOTT trials, and the CASCADE cohort were supported by the National Heart, Lung, and Blood Institute; National Institutes of Health; and Department of Health & Human Services. The current study was funded by the Canadian Institutes of Health Research and BC Lung Association. The authors reported having no relevant disclosures.

SOURCE: Leitao Filho SF et al. Chest. 2020 May 18. doi: 10.1016/j.chest.2020.04.058.

Among patients with COPD, the presence of hypogammaglobulinemia confers a nearly 30% increased risk of hospitalization, results from a pooled analysis of four studies showed.

“Mechanistic studies are still warranted to better elucidate how IgG and other immunoglobulins, in particular IgA, may contribute to the local airway host defense,” researchers led by Fernando Sergio Leitao Filho, MD, PhD, wrote in a study published in Chest (2020 May 18. doi: 10.1016/j.chest.2020.04.058). “Nevertheless, our results raise the possibility that, in select COPD patients, IgG replacement therapy may be effective in reducing the risk of COPD hospitalizations. Given the growing rate of COPD hospitalization in the U.S. and elsewhere, there is a pressing need for a large well-designed trial to test this hypothesis.”

In an effort to evaluate the effect of IgG levels on the cumulative incidence of COPD hospitalizations, Dr. Leitao Filho, of the University of British Columbia, Vancouver, and colleagues drew from 2,259 patients who participated in four different trials: Azithromycin for Prevention of Exacerbations of COPD (MACRO), Simvastatin for the Prevention of Exacerbations in Moderate and Severe COPD (STATCOPE), the Long-Term Oxygen Treatment Trial (LOTT), and COPD Activity: Serotonin Transporter, Cytokines and Depression (CASCADE). The mean baseline age of study participants was 66 years, and 641 (28.4%) had hypogammaglobulinemia, which was defined as having a serum IgG levels of less than 7.0 g/L, while the remainder had normal IgG levels.

The pooled meta-analysis, which is believed to be the largest of its kind, revealed that the presence of hypogammaglobulinemia was associated with an incidence of COPD hospitalizations that was 1.29-fold higher than that observed among participants who had normal IgG levels (P = .01). The incidence was even higher among patients with prior COPD admissions (pooled subdistribution hazard ratio, 1.58; P < .01), yet the risk of COPD admissions was similar between IgG groups in patients with no prior hospitalizations (pooled SHR, 1.15; P = .34). Patients with hypogammaglobulinemia also showed significantly higher rates of COPD hospitalizations per person-year, compared with their counterparts who had normal IgG levels (0.48 vs. 0.29, respectively; P < .001.)

The authors acknowledged certain limitations of the study, including the fact that they measured serum IgG levels only at baseline “when participants were clinically stable; thus, the variability of IgG levels in a given individual over time and during the course of an AECOPD [severe acute exacerbation of COPD] is uncertain. Secondly, clinical data on corticosteroid use (formulations, dose, and length of use) were not readily available. However, systemic steroid use (one or more courses due to AECOPD prior to study entry) was accounted for in our analyses.”

The MACRO, STATCOPE, LOTT trials, and the CASCADE cohort were supported by the National Heart, Lung, and Blood Institute; National Institutes of Health; and Department of Health & Human Services. The current study was funded by the Canadian Institutes of Health Research and BC Lung Association. The authors reported having no relevant disclosures.

SOURCE: Leitao Filho SF et al. Chest. 2020 May 18. doi: 10.1016/j.chest.2020.04.058.