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Expanding recommendations for RSV vaccination
AIRWAYS DISORDERS NETWORK
Asthma and COPD Section
Respiratory syncytial virus (RSV) has been increasingly recognized as a prevalent cause of lower respiratory tract infection (LRTI) among adults in the United States. The risk of hospitalization and mortality from RSV-associated respiratory failure is higher in those with chronic lung disease. In adults aged 65 years or older, RSV has shown to cause up to 160,000 hospitalizations and 10,000 deaths annually.
RSV has been well established as a major cause of LRTI and morbidity among infants. Maternal vaccination with RSVPreF in patients who are pregnant is suggested between 32 0/7 and 36 6/7 weeks of gestation if the date of delivery falls during RSV season to prevent severe illness in young infants in their first months of life. At present, there are no data supporting vaccine administration to patients who are pregnant delivering outside of the RSV season.
What about the rest of the patients? A phase 3b clinical trial to assess the safety and immunogenicity of the RSVPreF3 vaccine in individuals 18 to 49 years of age at increased risk for RSV LRTI, including those with chronic respiratory diseases, is currently underway with projected completion in April 2025 (clinical trials.gov; ID NCT06389487). Additional studies examining safety and immunogenicity combining RSV vaccines with PCV20, influenza, COVID, or Tdap vaccines are also underway. These outcomes will be significant for future recommendations to further lower the risk of developing LRTI, hospitalization, and death among patients less than the age of 60 with chronic lung diseases.
Resources
1. Melgar M, Britton A, Roper LE, et al. Use of respiratory syncytial virus vaccines in older adults: recommendations of the Advisory Committee on Immunization Practices - United States, 2023. MMWR Morb Mortal Wkly Rep. 2023;72(29):793-801.
2. Healthcare Providers: RSV Vaccination for Adults 60 Years of Age and Over. Centers for Disease Control and Prevention. Updated March 1, 2024. https://www.cdc.gov/vaccines/vpd/rsv/hcp/older-adults.html
3. Ault KA, Hughes BL, Riley LE. Maternal Respiratory Syncytial Virus Vaccination. The American College of Obstetricians and Gynecologists. Updated December 11, 2023. https://www.acog.org/clinical/clinical-guidance/practice-advisory/articles/2023/09/maternal-respiratory-syncytial-virus-vaccination
AIRWAYS DISORDERS NETWORK
Asthma and COPD Section
Respiratory syncytial virus (RSV) has been increasingly recognized as a prevalent cause of lower respiratory tract infection (LRTI) among adults in the United States. The risk of hospitalization and mortality from RSV-associated respiratory failure is higher in those with chronic lung disease. In adults aged 65 years or older, RSV has shown to cause up to 160,000 hospitalizations and 10,000 deaths annually.
RSV has been well established as a major cause of LRTI and morbidity among infants. Maternal vaccination with RSVPreF in patients who are pregnant is suggested between 32 0/7 and 36 6/7 weeks of gestation if the date of delivery falls during RSV season to prevent severe illness in young infants in their first months of life. At present, there are no data supporting vaccine administration to patients who are pregnant delivering outside of the RSV season.
What about the rest of the patients? A phase 3b clinical trial to assess the safety and immunogenicity of the RSVPreF3 vaccine in individuals 18 to 49 years of age at increased risk for RSV LRTI, including those with chronic respiratory diseases, is currently underway with projected completion in April 2025 (clinical trials.gov; ID NCT06389487). Additional studies examining safety and immunogenicity combining RSV vaccines with PCV20, influenza, COVID, or Tdap vaccines are also underway. These outcomes will be significant for future recommendations to further lower the risk of developing LRTI, hospitalization, and death among patients less than the age of 60 with chronic lung diseases.
Resources
1. Melgar M, Britton A, Roper LE, et al. Use of respiratory syncytial virus vaccines in older adults: recommendations of the Advisory Committee on Immunization Practices - United States, 2023. MMWR Morb Mortal Wkly Rep. 2023;72(29):793-801.
2. Healthcare Providers: RSV Vaccination for Adults 60 Years of Age and Over. Centers for Disease Control and Prevention. Updated March 1, 2024. https://www.cdc.gov/vaccines/vpd/rsv/hcp/older-adults.html
3. Ault KA, Hughes BL, Riley LE. Maternal Respiratory Syncytial Virus Vaccination. The American College of Obstetricians and Gynecologists. Updated December 11, 2023. https://www.acog.org/clinical/clinical-guidance/practice-advisory/articles/2023/09/maternal-respiratory-syncytial-virus-vaccination
AIRWAYS DISORDERS NETWORK
Asthma and COPD Section
Respiratory syncytial virus (RSV) has been increasingly recognized as a prevalent cause of lower respiratory tract infection (LRTI) among adults in the United States. The risk of hospitalization and mortality from RSV-associated respiratory failure is higher in those with chronic lung disease. In adults aged 65 years or older, RSV has shown to cause up to 160,000 hospitalizations and 10,000 deaths annually.
RSV has been well established as a major cause of LRTI and morbidity among infants. Maternal vaccination with RSVPreF in patients who are pregnant is suggested between 32 0/7 and 36 6/7 weeks of gestation if the date of delivery falls during RSV season to prevent severe illness in young infants in their first months of life. At present, there are no data supporting vaccine administration to patients who are pregnant delivering outside of the RSV season.
What about the rest of the patients? A phase 3b clinical trial to assess the safety and immunogenicity of the RSVPreF3 vaccine in individuals 18 to 49 years of age at increased risk for RSV LRTI, including those with chronic respiratory diseases, is currently underway with projected completion in April 2025 (clinical trials.gov; ID NCT06389487). Additional studies examining safety and immunogenicity combining RSV vaccines with PCV20, influenza, COVID, or Tdap vaccines are also underway. These outcomes will be significant for future recommendations to further lower the risk of developing LRTI, hospitalization, and death among patients less than the age of 60 with chronic lung diseases.
Resources
1. Melgar M, Britton A, Roper LE, et al. Use of respiratory syncytial virus vaccines in older adults: recommendations of the Advisory Committee on Immunization Practices - United States, 2023. MMWR Morb Mortal Wkly Rep. 2023;72(29):793-801.
2. Healthcare Providers: RSV Vaccination for Adults 60 Years of Age and Over. Centers for Disease Control and Prevention. Updated March 1, 2024. https://www.cdc.gov/vaccines/vpd/rsv/hcp/older-adults.html
3. Ault KA, Hughes BL, Riley LE. Maternal Respiratory Syncytial Virus Vaccination. The American College of Obstetricians and Gynecologists. Updated December 11, 2023. https://www.acog.org/clinical/clinical-guidance/practice-advisory/articles/2023/09/maternal-respiratory-syncytial-virus-vaccination
Right heart catheterization practice patterns in pulmonary hypertension in the US
PULMONARY VASCULAR AND CARDIOVASCULAR NETWORK
Pulmonary Vascular Disease Section
While these cutoffs are straightforward, a gap in practical application is evidenced by considerable variability in how PH providers perform and interpret RHC hemodynamic information.
A recent survey of 145 PH providers conducted by CHEST’s Pulmonary Vascular Disease Section shed light on the current RHC practices in the US.2 Regarding the respondents’ characteristics, 85% were in the 30-60 age range, 68% were males, and 71% were pulmonologists.
About half of the providers perform the RHC themselves. Most review the hemodynamic tracings, but up to 21% rely on the final report alone. Regarding PCWP, most (86%) obtain it during end-expiration, but only 42% routinely measure a PCWP saturation for confirmation. When faced with PVR discrepancies between thermodilution and indirect Fick (IFick), up to 30% chose either IFick or didn’t know which one to trust. Nearly 20% repeat the RHC at least annually, and 80% whenever the patient declines.
This study provides the largest reported data on real-world RHC practices by PH physicians in the US. We found significant variability in hemodynamic interpretation. Standardization of RHC performance and hemodynamic evaluation is crucial to ensure appropriate PH management.
– Abubakr A. Bajwa, MBBS, FCCP
Member-at-Large
– Samantha Pettigrew, MD
Fellow-in-Training
– Francisco J. Soto, MD, MS, FCCP
Section Vice Chair
References
1. Simonneau et al. Eur Resp J. 2019;53(1):1801913
2. Soto et al. CHEST. 2023;164(4):Supplement A5832-A5834
PULMONARY VASCULAR AND CARDIOVASCULAR NETWORK
Pulmonary Vascular Disease Section
While these cutoffs are straightforward, a gap in practical application is evidenced by considerable variability in how PH providers perform and interpret RHC hemodynamic information.
A recent survey of 145 PH providers conducted by CHEST’s Pulmonary Vascular Disease Section shed light on the current RHC practices in the US.2 Regarding the respondents’ characteristics, 85% were in the 30-60 age range, 68% were males, and 71% were pulmonologists.
About half of the providers perform the RHC themselves. Most review the hemodynamic tracings, but up to 21% rely on the final report alone. Regarding PCWP, most (86%) obtain it during end-expiration, but only 42% routinely measure a PCWP saturation for confirmation. When faced with PVR discrepancies between thermodilution and indirect Fick (IFick), up to 30% chose either IFick or didn’t know which one to trust. Nearly 20% repeat the RHC at least annually, and 80% whenever the patient declines.
This study provides the largest reported data on real-world RHC practices by PH physicians in the US. We found significant variability in hemodynamic interpretation. Standardization of RHC performance and hemodynamic evaluation is crucial to ensure appropriate PH management.
– Abubakr A. Bajwa, MBBS, FCCP
Member-at-Large
– Samantha Pettigrew, MD
Fellow-in-Training
– Francisco J. Soto, MD, MS, FCCP
Section Vice Chair
References
1. Simonneau et al. Eur Resp J. 2019;53(1):1801913
2. Soto et al. CHEST. 2023;164(4):Supplement A5832-A5834
PULMONARY VASCULAR AND CARDIOVASCULAR NETWORK
Pulmonary Vascular Disease Section
While these cutoffs are straightforward, a gap in practical application is evidenced by considerable variability in how PH providers perform and interpret RHC hemodynamic information.
A recent survey of 145 PH providers conducted by CHEST’s Pulmonary Vascular Disease Section shed light on the current RHC practices in the US.2 Regarding the respondents’ characteristics, 85% were in the 30-60 age range, 68% were males, and 71% were pulmonologists.
About half of the providers perform the RHC themselves. Most review the hemodynamic tracings, but up to 21% rely on the final report alone. Regarding PCWP, most (86%) obtain it during end-expiration, but only 42% routinely measure a PCWP saturation for confirmation. When faced with PVR discrepancies between thermodilution and indirect Fick (IFick), up to 30% chose either IFick or didn’t know which one to trust. Nearly 20% repeat the RHC at least annually, and 80% whenever the patient declines.
This study provides the largest reported data on real-world RHC practices by PH physicians in the US. We found significant variability in hemodynamic interpretation. Standardization of RHC performance and hemodynamic evaluation is crucial to ensure appropriate PH management.
– Abubakr A. Bajwa, MBBS, FCCP
Member-at-Large
– Samantha Pettigrew, MD
Fellow-in-Training
– Francisco J. Soto, MD, MS, FCCP
Section Vice Chair
References
1. Simonneau et al. Eur Resp J. 2019;53(1):1801913
2. Soto et al. CHEST. 2023;164(4):Supplement A5832-A5834
Machine learning meets cardiopulmonary exercise testing
DIFFUSE LUNG DISEASE AND LUNG TRANSPLANT NETWORK
Pulmonary Physiology and Rehabilitation Section
Several studies have explored automation of CPET interpretation, the most notable of which utilized machine learning.1
Recently, Schwendinger et al. investigated the ability of machine learning algorithms to not only categorize (pulmonary-vascular, mechanical-ventilatory, cardiocirculatory, and muscular), but also assign severity scores (0-6) to exercise limitations found in a group of 200 CPETs performed on adult patients referred to a lung clinic in Germany.2 Decision trees were constructed for each of the limitation categories by identifying variables with the lowest Root Mean Square Error (RMSE), which were comparable to agreement within expert interpretations. Combining decision trees allowed for a more comprehensive analysis with identification of multiple abnormalities in the same test.
A major limitation to the study is limited applicability to general patient populations without suspected lung disease. This bias is reflected in the decision tree for cardiovascular limitation that relied on VO2 peak and FEV1 alone. The authors were unable to construct a decision tree for muscular limitations due to a lack of identified cases.
Overall, these results suggest that refinement of machine learning algorithms built with larger heterogeneous data sets and expert interpretation can make CPETs accessible to the nonexpert clinician as long as test quality can be replicated across centers.
–Joseph Russo, MD
Fellow-in-Training
– Fatima Zeba, MD
Member-at-Large
References
1. Portella JJ, Andonian BJ, Brown DE, et al. Using machine learning to identify organ system specific limitations to exercise via cardiopulmonary exercise testing. IEEE J Biomed Health Inform. 2022;26(8):4228-4237.
2. Schwendinger F, Biehler AK, Nagy-Huber M, et al. Using machine learning-based algorithms to identify and quantify exercise limitations in clinical practice: are we there yet? Med Sci Sports Exerc. 2024;56(2):159-169.
DIFFUSE LUNG DISEASE AND LUNG TRANSPLANT NETWORK
Pulmonary Physiology and Rehabilitation Section
Several studies have explored automation of CPET interpretation, the most notable of which utilized machine learning.1
Recently, Schwendinger et al. investigated the ability of machine learning algorithms to not only categorize (pulmonary-vascular, mechanical-ventilatory, cardiocirculatory, and muscular), but also assign severity scores (0-6) to exercise limitations found in a group of 200 CPETs performed on adult patients referred to a lung clinic in Germany.2 Decision trees were constructed for each of the limitation categories by identifying variables with the lowest Root Mean Square Error (RMSE), which were comparable to agreement within expert interpretations. Combining decision trees allowed for a more comprehensive analysis with identification of multiple abnormalities in the same test.
A major limitation to the study is limited applicability to general patient populations without suspected lung disease. This bias is reflected in the decision tree for cardiovascular limitation that relied on VO2 peak and FEV1 alone. The authors were unable to construct a decision tree for muscular limitations due to a lack of identified cases.
Overall, these results suggest that refinement of machine learning algorithms built with larger heterogeneous data sets and expert interpretation can make CPETs accessible to the nonexpert clinician as long as test quality can be replicated across centers.
–Joseph Russo, MD
Fellow-in-Training
– Fatima Zeba, MD
Member-at-Large
References
1. Portella JJ, Andonian BJ, Brown DE, et al. Using machine learning to identify organ system specific limitations to exercise via cardiopulmonary exercise testing. IEEE J Biomed Health Inform. 2022;26(8):4228-4237.
2. Schwendinger F, Biehler AK, Nagy-Huber M, et al. Using machine learning-based algorithms to identify and quantify exercise limitations in clinical practice: are we there yet? Med Sci Sports Exerc. 2024;56(2):159-169.
DIFFUSE LUNG DISEASE AND LUNG TRANSPLANT NETWORK
Pulmonary Physiology and Rehabilitation Section
Several studies have explored automation of CPET interpretation, the most notable of which utilized machine learning.1
Recently, Schwendinger et al. investigated the ability of machine learning algorithms to not only categorize (pulmonary-vascular, mechanical-ventilatory, cardiocirculatory, and muscular), but also assign severity scores (0-6) to exercise limitations found in a group of 200 CPETs performed on adult patients referred to a lung clinic in Germany.2 Decision trees were constructed for each of the limitation categories by identifying variables with the lowest Root Mean Square Error (RMSE), which were comparable to agreement within expert interpretations. Combining decision trees allowed for a more comprehensive analysis with identification of multiple abnormalities in the same test.
A major limitation to the study is limited applicability to general patient populations without suspected lung disease. This bias is reflected in the decision tree for cardiovascular limitation that relied on VO2 peak and FEV1 alone. The authors were unable to construct a decision tree for muscular limitations due to a lack of identified cases.
Overall, these results suggest that refinement of machine learning algorithms built with larger heterogeneous data sets and expert interpretation can make CPETs accessible to the nonexpert clinician as long as test quality can be replicated across centers.
–Joseph Russo, MD
Fellow-in-Training
– Fatima Zeba, MD
Member-at-Large
References
1. Portella JJ, Andonian BJ, Brown DE, et al. Using machine learning to identify organ system specific limitations to exercise via cardiopulmonary exercise testing. IEEE J Biomed Health Inform. 2022;26(8):4228-4237.
2. Schwendinger F, Biehler AK, Nagy-Huber M, et al. Using machine learning-based algorithms to identify and quantify exercise limitations in clinical practice: are we there yet? Med Sci Sports Exerc. 2024;56(2):159-169.
Primary vs secondary: A review of pneumothorax management
THORACIC ONCOLOGY AND CHEST PROCEDURES NETWORK
Pleural Disease Section
The consensus for treatment of PSP depends on the size of the pneumothorax; if smaller than 2-3 cm, the patient can be observed for 3-6 hours and if radiographically stable, can discharge home with close (within 48 hours) follow-up and repeat chest radiograph (CXR).1,2 If symptomatic or large, an intervention is recommended or home discharge with a Heimlich valve and close follow up (48 hours) with interval CXR.1 For the management of SSP, it is recommended that the patient remain hospitalized, with a lower threshold to intervene with chest tube placement.1,2
Both the 2001 CHEST guidelines and 2010 BTS guidelines recommend the use of a small bore pigtail catheter (<14 Fr) for management of PSP.1,2 Expert consensus and retrospective studies recommend the use of a large bore chest tube (>28 French) in patients with secondary spontaneous pneumothorax and concomitant hemothorax, empyema, large air leaks, or mechanical ventilation.3,4
For patients requiring pleurodesis, talc slurry is frequently used due to it being widely available and inexpensive.5 However, talc is associated with impurities and has been associated with severe pain, fever, dyspnea, and pneumonitis.6,7 Other agents such as doxycycline have been studied but overall data is lacking. One study comparing doxycycline solution with talc slurry showed less recurrence of pneumothorax with talc as compared with doxycycline with no difference in side effects.8
– Praneet Iyer, MD
Member-at-Large
– Cristina Salmon, MD
Fellow-in-Training
– John N. Shumar, DO
Member-at-Large
References
1. Baumann MH, AACP Pneumothorax Consensus Group, et al. Management of spontaneous pneumothorax: an American College of Chest Physicians Delphi consensus statement. CHEST. 2001;119:590-602. doi: 10.1378/chest.119.2.590
2. Roberts ME, Neville E, Berrisford RG, Antunes G, Ali NJ; BTS Pleural Disease Guideline Group Management of a malignant pleural effusion: British Thoracic Society pleural disease guideline 2010. Thorax. 2010;65:ii32-ii40. doi: 10.1136/thx.2010.136994
3. Lin YC, Tu CY, Liang SJ, et al. Pigtail catheter for the management of pneumothorax in mechanically ventilated patients. Am J Emerg Med. 2010;28(4):466-471. doi: 10.1016/j.ajem.2009.01.033. Epub 2010 Jan 28. PMID: 20466227.4. Baumann MH. Pleural Disease: An International Textbook. London: Arnold Publishers; 2003.
5. How CH, Hsu HH, Chen JS. Chemical pleurodesis for spontaneous pneumothorax. J Formos Med Assoc. 2013;112:749-755. 10.1016/j.jfma.2013.10.016
6. Rehse DH, Aye RW, Florence MG. Respiratory failure following talc pleurodesis. Am J Surg. 1999;177:437-440. Doi: 10.1016/S0002-9610(99)00075-6
7. Ferrer J, Villarino MA, Tura JM, et al. Talc preparations used for pleurodesis vary markedly from one preparation to another. CHEST. 2001;119:1901-1905. doi: 10.1378/chest.119.6.1901
8. Park EH, Kim JH, Yee J, et al. Comparisons of doxycycline solution with talc slurry for chemical pleurodesis and risk factors for recurrence in South Korean patients with spontaneous pneumothorax. Eur J Hosp Pharm. 2019;26(5):275-279. doi: 10.1136/ejhpharm-2017-001465. Epub 2018 Apr 18. PMID: 31656615; PMCID: PMC6788261.
THORACIC ONCOLOGY AND CHEST PROCEDURES NETWORK
Pleural Disease Section
The consensus for treatment of PSP depends on the size of the pneumothorax; if smaller than 2-3 cm, the patient can be observed for 3-6 hours and if radiographically stable, can discharge home with close (within 48 hours) follow-up and repeat chest radiograph (CXR).1,2 If symptomatic or large, an intervention is recommended or home discharge with a Heimlich valve and close follow up (48 hours) with interval CXR.1 For the management of SSP, it is recommended that the patient remain hospitalized, with a lower threshold to intervene with chest tube placement.1,2
Both the 2001 CHEST guidelines and 2010 BTS guidelines recommend the use of a small bore pigtail catheter (<14 Fr) for management of PSP.1,2 Expert consensus and retrospective studies recommend the use of a large bore chest tube (>28 French) in patients with secondary spontaneous pneumothorax and concomitant hemothorax, empyema, large air leaks, or mechanical ventilation.3,4
For patients requiring pleurodesis, talc slurry is frequently used due to it being widely available and inexpensive.5 However, talc is associated with impurities and has been associated with severe pain, fever, dyspnea, and pneumonitis.6,7 Other agents such as doxycycline have been studied but overall data is lacking. One study comparing doxycycline solution with talc slurry showed less recurrence of pneumothorax with talc as compared with doxycycline with no difference in side effects.8
– Praneet Iyer, MD
Member-at-Large
– Cristina Salmon, MD
Fellow-in-Training
– John N. Shumar, DO
Member-at-Large
References
1. Baumann MH, AACP Pneumothorax Consensus Group, et al. Management of spontaneous pneumothorax: an American College of Chest Physicians Delphi consensus statement. CHEST. 2001;119:590-602. doi: 10.1378/chest.119.2.590
2. Roberts ME, Neville E, Berrisford RG, Antunes G, Ali NJ; BTS Pleural Disease Guideline Group Management of a malignant pleural effusion: British Thoracic Society pleural disease guideline 2010. Thorax. 2010;65:ii32-ii40. doi: 10.1136/thx.2010.136994
3. Lin YC, Tu CY, Liang SJ, et al. Pigtail catheter for the management of pneumothorax in mechanically ventilated patients. Am J Emerg Med. 2010;28(4):466-471. doi: 10.1016/j.ajem.2009.01.033. Epub 2010 Jan 28. PMID: 20466227.4. Baumann MH. Pleural Disease: An International Textbook. London: Arnold Publishers; 2003.
5. How CH, Hsu HH, Chen JS. Chemical pleurodesis for spontaneous pneumothorax. J Formos Med Assoc. 2013;112:749-755. 10.1016/j.jfma.2013.10.016
6. Rehse DH, Aye RW, Florence MG. Respiratory failure following talc pleurodesis. Am J Surg. 1999;177:437-440. Doi: 10.1016/S0002-9610(99)00075-6
7. Ferrer J, Villarino MA, Tura JM, et al. Talc preparations used for pleurodesis vary markedly from one preparation to another. CHEST. 2001;119:1901-1905. doi: 10.1378/chest.119.6.1901
8. Park EH, Kim JH, Yee J, et al. Comparisons of doxycycline solution with talc slurry for chemical pleurodesis and risk factors for recurrence in South Korean patients with spontaneous pneumothorax. Eur J Hosp Pharm. 2019;26(5):275-279. doi: 10.1136/ejhpharm-2017-001465. Epub 2018 Apr 18. PMID: 31656615; PMCID: PMC6788261.
THORACIC ONCOLOGY AND CHEST PROCEDURES NETWORK
Pleural Disease Section
The consensus for treatment of PSP depends on the size of the pneumothorax; if smaller than 2-3 cm, the patient can be observed for 3-6 hours and if radiographically stable, can discharge home with close (within 48 hours) follow-up and repeat chest radiograph (CXR).1,2 If symptomatic or large, an intervention is recommended or home discharge with a Heimlich valve and close follow up (48 hours) with interval CXR.1 For the management of SSP, it is recommended that the patient remain hospitalized, with a lower threshold to intervene with chest tube placement.1,2
Both the 2001 CHEST guidelines and 2010 BTS guidelines recommend the use of a small bore pigtail catheter (<14 Fr) for management of PSP.1,2 Expert consensus and retrospective studies recommend the use of a large bore chest tube (>28 French) in patients with secondary spontaneous pneumothorax and concomitant hemothorax, empyema, large air leaks, or mechanical ventilation.3,4
For patients requiring pleurodesis, talc slurry is frequently used due to it being widely available and inexpensive.5 However, talc is associated with impurities and has been associated with severe pain, fever, dyspnea, and pneumonitis.6,7 Other agents such as doxycycline have been studied but overall data is lacking. One study comparing doxycycline solution with talc slurry showed less recurrence of pneumothorax with talc as compared with doxycycline with no difference in side effects.8
– Praneet Iyer, MD
Member-at-Large
– Cristina Salmon, MD
Fellow-in-Training
– John N. Shumar, DO
Member-at-Large
References
1. Baumann MH, AACP Pneumothorax Consensus Group, et al. Management of spontaneous pneumothorax: an American College of Chest Physicians Delphi consensus statement. CHEST. 2001;119:590-602. doi: 10.1378/chest.119.2.590
2. Roberts ME, Neville E, Berrisford RG, Antunes G, Ali NJ; BTS Pleural Disease Guideline Group Management of a malignant pleural effusion: British Thoracic Society pleural disease guideline 2010. Thorax. 2010;65:ii32-ii40. doi: 10.1136/thx.2010.136994
3. Lin YC, Tu CY, Liang SJ, et al. Pigtail catheter for the management of pneumothorax in mechanically ventilated patients. Am J Emerg Med. 2010;28(4):466-471. doi: 10.1016/j.ajem.2009.01.033. Epub 2010 Jan 28. PMID: 20466227.4. Baumann MH. Pleural Disease: An International Textbook. London: Arnold Publishers; 2003.
5. How CH, Hsu HH, Chen JS. Chemical pleurodesis for spontaneous pneumothorax. J Formos Med Assoc. 2013;112:749-755. 10.1016/j.jfma.2013.10.016
6. Rehse DH, Aye RW, Florence MG. Respiratory failure following talc pleurodesis. Am J Surg. 1999;177:437-440. Doi: 10.1016/S0002-9610(99)00075-6
7. Ferrer J, Villarino MA, Tura JM, et al. Talc preparations used for pleurodesis vary markedly from one preparation to another. CHEST. 2001;119:1901-1905. doi: 10.1378/chest.119.6.1901
8. Park EH, Kim JH, Yee J, et al. Comparisons of doxycycline solution with talc slurry for chemical pleurodesis and risk factors for recurrence in South Korean patients with spontaneous pneumothorax. Eur J Hosp Pharm. 2019;26(5):275-279. doi: 10.1136/ejhpharm-2017-001465. Epub 2018 Apr 18. PMID: 31656615; PMCID: PMC6788261.
Severe early-life respiratory infections heighten pediatric OSA risk
AIRWAYS DISORDERS NETWORK
Pediatric Chest Medicine Section
Children with severe lower respiratory tract infections (LRTIs) within the first 2 years of life had a 2.06-fold increased risk of developing pediatric OSA by age 5, according to a study comparing patients hospitalized with LRTI to controls without severe LRTI.1 Prior studies linked LRTI and OSA, but the impact of LRTI severity was unknown.2,3,4 They used Kaplan-Meier survival estimates and Cox proportional hazards models to evaluate the risk of OSA.
Compared with patients with severe LRTIs, controls were more likely to have been full-term births, delivered vaginally, and breastfed. The OSA rate was significantly higher among children with severe LRTIs compared with controls (14.7% vs 6.8%). In the adjusted model controlling for relevant maternal and infant covariables, severe LRTI was significantly associated with increased OSA risk (HR, 2.06; 95% CI, 1.41-3.02; P < .001). Other factors such as prematurity (HR, 1.34; 95% CI, 1.01-1.77; P = .039) and maternal obesity (HR, 1.82; 95% CI, 1.32-2.52; P < .001) were also associated with increased OSA risk.
Maria Gutierrez, MD, of the Division of Pediatric Allergy, Immunology, and Rheumatology at Johns Hopkins University School of Medicine in Baltimore led the research. The study was published in Pediatric Pulmonology (2023 Dec 2. doi: 10.1002/ppul.26810). Study limitations included the use of electronic medical record data and potential lack of generalizability. The BBC is supported by the NIH.
– Agnes S. Montgomery, MD
Fellow-in-Training
References
1. Gayoso-Liviac MG, Nino G, Montgomery AS, Hong X, Wang X, Gutierrez MJ. Infants hospitalized with lower respiratory tract infections during the first two years of life have increased risk of pediatric obstructive sleep apnea. Pediatr Pulmonol. 2024;59:679-687.
2. Snow A, Dayyat E, Montgomery‐Downs HE, Kheirandish‐Gozal L, Gozal D. Pediatric obstructive sleep apnea: a potential late consequence of respiratory syncytial virus bronchiolitis. Pediatr Pulmonol. 2009;44(12):1186‐1191.
3. Chen VC‐H, Yang Y‐H, Kuo T‐Y, et al. Increased incidence of obstructive sleep apnea in hospitalized children after enterovirus infection: a nationwide population‐based cohort study. Pediatr Infect Dis J. 2018;37(9):872‐879.
4. Gutierrez MJ, Nino G, Landeo‐Gutierrez JS, et al. Lower respiratory tract infections in early life are associated with obstructive sleep apnea diagnosis during childhood in a large birth cohort. Sleep. 2021;44:12.
AIRWAYS DISORDERS NETWORK
Pediatric Chest Medicine Section
Children with severe lower respiratory tract infections (LRTIs) within the first 2 years of life had a 2.06-fold increased risk of developing pediatric OSA by age 5, according to a study comparing patients hospitalized with LRTI to controls without severe LRTI.1 Prior studies linked LRTI and OSA, but the impact of LRTI severity was unknown.2,3,4 They used Kaplan-Meier survival estimates and Cox proportional hazards models to evaluate the risk of OSA.
Compared with patients with severe LRTIs, controls were more likely to have been full-term births, delivered vaginally, and breastfed. The OSA rate was significantly higher among children with severe LRTIs compared with controls (14.7% vs 6.8%). In the adjusted model controlling for relevant maternal and infant covariables, severe LRTI was significantly associated with increased OSA risk (HR, 2.06; 95% CI, 1.41-3.02; P < .001). Other factors such as prematurity (HR, 1.34; 95% CI, 1.01-1.77; P = .039) and maternal obesity (HR, 1.82; 95% CI, 1.32-2.52; P < .001) were also associated with increased OSA risk.
Maria Gutierrez, MD, of the Division of Pediatric Allergy, Immunology, and Rheumatology at Johns Hopkins University School of Medicine in Baltimore led the research. The study was published in Pediatric Pulmonology (2023 Dec 2. doi: 10.1002/ppul.26810). Study limitations included the use of electronic medical record data and potential lack of generalizability. The BBC is supported by the NIH.
– Agnes S. Montgomery, MD
Fellow-in-Training
References
1. Gayoso-Liviac MG, Nino G, Montgomery AS, Hong X, Wang X, Gutierrez MJ. Infants hospitalized with lower respiratory tract infections during the first two years of life have increased risk of pediatric obstructive sleep apnea. Pediatr Pulmonol. 2024;59:679-687.
2. Snow A, Dayyat E, Montgomery‐Downs HE, Kheirandish‐Gozal L, Gozal D. Pediatric obstructive sleep apnea: a potential late consequence of respiratory syncytial virus bronchiolitis. Pediatr Pulmonol. 2009;44(12):1186‐1191.
3. Chen VC‐H, Yang Y‐H, Kuo T‐Y, et al. Increased incidence of obstructive sleep apnea in hospitalized children after enterovirus infection: a nationwide population‐based cohort study. Pediatr Infect Dis J. 2018;37(9):872‐879.
4. Gutierrez MJ, Nino G, Landeo‐Gutierrez JS, et al. Lower respiratory tract infections in early life are associated with obstructive sleep apnea diagnosis during childhood in a large birth cohort. Sleep. 2021;44:12.
AIRWAYS DISORDERS NETWORK
Pediatric Chest Medicine Section
Children with severe lower respiratory tract infections (LRTIs) within the first 2 years of life had a 2.06-fold increased risk of developing pediatric OSA by age 5, according to a study comparing patients hospitalized with LRTI to controls without severe LRTI.1 Prior studies linked LRTI and OSA, but the impact of LRTI severity was unknown.2,3,4 They used Kaplan-Meier survival estimates and Cox proportional hazards models to evaluate the risk of OSA.
Compared with patients with severe LRTIs, controls were more likely to have been full-term births, delivered vaginally, and breastfed. The OSA rate was significantly higher among children with severe LRTIs compared with controls (14.7% vs 6.8%). In the adjusted model controlling for relevant maternal and infant covariables, severe LRTI was significantly associated with increased OSA risk (HR, 2.06; 95% CI, 1.41-3.02; P < .001). Other factors such as prematurity (HR, 1.34; 95% CI, 1.01-1.77; P = .039) and maternal obesity (HR, 1.82; 95% CI, 1.32-2.52; P < .001) were also associated with increased OSA risk.
Maria Gutierrez, MD, of the Division of Pediatric Allergy, Immunology, and Rheumatology at Johns Hopkins University School of Medicine in Baltimore led the research. The study was published in Pediatric Pulmonology (2023 Dec 2. doi: 10.1002/ppul.26810). Study limitations included the use of electronic medical record data and potential lack of generalizability. The BBC is supported by the NIH.
– Agnes S. Montgomery, MD
Fellow-in-Training
References
1. Gayoso-Liviac MG, Nino G, Montgomery AS, Hong X, Wang X, Gutierrez MJ. Infants hospitalized with lower respiratory tract infections during the first two years of life have increased risk of pediatric obstructive sleep apnea. Pediatr Pulmonol. 2024;59:679-687.
2. Snow A, Dayyat E, Montgomery‐Downs HE, Kheirandish‐Gozal L, Gozal D. Pediatric obstructive sleep apnea: a potential late consequence of respiratory syncytial virus bronchiolitis. Pediatr Pulmonol. 2009;44(12):1186‐1191.
3. Chen VC‐H, Yang Y‐H, Kuo T‐Y, et al. Increased incidence of obstructive sleep apnea in hospitalized children after enterovirus infection: a nationwide population‐based cohort study. Pediatr Infect Dis J. 2018;37(9):872‐879.
4. Gutierrez MJ, Nino G, Landeo‐Gutierrez JS, et al. Lower respiratory tract infections in early life are associated with obstructive sleep apnea diagnosis during childhood in a large birth cohort. Sleep. 2021;44:12.
Electrical impedance tomography: Visualization and integration of the impact of mechanical ventilation
CRITICAL CARE NETWORK
Mechanical Ventilation and Airways Management Section
1,2,3 Continuous monitoring of the tidal volume, plateau pressure, and positive end-expiratory pressure (PEEP) is crucial to maintain LPV. Electrical impedance tomography (EIT) is a noninvasive, radiation-free, imaging method of the electrical conductivity distribution inside the human body.4 Integrating EIT into invasive mechanical ventilation allows imaging of the regional lung ventilation as affected by the mechanical ventilation settings as well as the patient position. It can also provide a personalized approach to determining the optimum ventilatory settings based on individual patient conditions.5,6
Optimum PEEP titration is crucial to prevent lung collapse as well as overdistension. In a single-center, randomized, crossover pilot study of 12 patients, optimum PEEP titration was carried out using a high PEEP/FiO2 table vs EIT in moderate to severe ARDS. The primary endpoint was the reduction of mechanical power, which was consistently lower in the EIT group.7 EIT also allows the assessment of regional compliance of the lungs. There are reports regarding the superiority of regional compliance of lung over global compliance in achieving better gas exchange, lung compliance, and weaning of mechanical ventilation.8 EIT could assess the patient’s response to prone positioning by illustrating the change in the functional residual capacity between supine and prone positioning.9 In addition, by visualization of the ventilated areas during spontaneous breathing and reduction of pressure support, EIT could help in weaning off the mechanical ventilation.10
In conclusion, EIT can be a tool to provide safe and personalized mechanical ventilation in patients with respiratory failure. However, there are limited data regarding its use and application, which might become an interesting subject for future clinical research.
– Akram M. Zaaqoq, MD, MPH
Member-at-Large
References
1. Amato MB, Barbas CS, Medeiros DM, et al. Effect of a protective-ventilation strategy on mortality in the acute respiratory distress syndrome. N Engl J Med. 1998;338(6):347-354.
2. Brower RG, Matthay MA, Morris A, et al. Ventilation with lower tidal volumes as compared with traditional tidal volumes for acute lung injury and the acute respiratory distress syndrome. N Engl J Med. 2000;342(18):1301-1308.
3. Neto AS, Simonis FD, Barbas CSV, et al. Lung-protective ventilation with low tidal volumes and the occurrence of pulmonary complications in patients without acute respiratory distress syndrome: a systematic review and individual patient data analysis. Crit Care Med. 2015;43(10):2155-2163.
4. Adler A, Boyle A. Electrical impedance tomography: tissue properties to image measures. IEEE Trans Biomed Eng. 2017;64(11):2494-2504.
5. Jang GY, Ayoub G, Kim YE, et al. Integrated EIT system for functional lung ventilation imaging. Biomed Eng Online. 2019;18(1):83.
6. Sella N, Pettenuzzo T, Zarantonello F, et al. Electrical impedance tomography: a compass for the safe route to optimal PEEP. Respir Med. 2021;187:106555.
7. Jimenez JV, Munroe E, Weirauch AJ, et al. Electric impedance tomography-guided PEEP titration reduces mechanical power in ARDS: a randomized crossover pilot trial. Crit Care. 2023;27(1):21.
8. Costa ELV, Borges JB, Melo A, et al. Bedside estimation of recruitable alveolar collapse and hyperdistension by electrical impedance tomography. Intensive Care Med. 2009;35(6):1132-1137.9. Riera J, Pérez P, Cortés J, Roca O, Masclans JR, Rello J. Effect of high-flow nasal cannula and body position on end-expiratory lung volume: a cohort study using electrical impedance tomography. Respir Care. 2013;58(4):589-596.10. Wisse JJ, Goos TG, Jonkman AH, et al. Electrical impedance tomography as a monitoring tool during weaning from mechanical ventilation: an observational study during the spontaneous breathing trial. Respir Res. 2024;25(1):179.
CRITICAL CARE NETWORK
Mechanical Ventilation and Airways Management Section
1,2,3 Continuous monitoring of the tidal volume, plateau pressure, and positive end-expiratory pressure (PEEP) is crucial to maintain LPV. Electrical impedance tomography (EIT) is a noninvasive, radiation-free, imaging method of the electrical conductivity distribution inside the human body.4 Integrating EIT into invasive mechanical ventilation allows imaging of the regional lung ventilation as affected by the mechanical ventilation settings as well as the patient position. It can also provide a personalized approach to determining the optimum ventilatory settings based on individual patient conditions.5,6
Optimum PEEP titration is crucial to prevent lung collapse as well as overdistension. In a single-center, randomized, crossover pilot study of 12 patients, optimum PEEP titration was carried out using a high PEEP/FiO2 table vs EIT in moderate to severe ARDS. The primary endpoint was the reduction of mechanical power, which was consistently lower in the EIT group.7 EIT also allows the assessment of regional compliance of the lungs. There are reports regarding the superiority of regional compliance of lung over global compliance in achieving better gas exchange, lung compliance, and weaning of mechanical ventilation.8 EIT could assess the patient’s response to prone positioning by illustrating the change in the functional residual capacity between supine and prone positioning.9 In addition, by visualization of the ventilated areas during spontaneous breathing and reduction of pressure support, EIT could help in weaning off the mechanical ventilation.10
In conclusion, EIT can be a tool to provide safe and personalized mechanical ventilation in patients with respiratory failure. However, there are limited data regarding its use and application, which might become an interesting subject for future clinical research.
– Akram M. Zaaqoq, MD, MPH
Member-at-Large
References
1. Amato MB, Barbas CS, Medeiros DM, et al. Effect of a protective-ventilation strategy on mortality in the acute respiratory distress syndrome. N Engl J Med. 1998;338(6):347-354.
2. Brower RG, Matthay MA, Morris A, et al. Ventilation with lower tidal volumes as compared with traditional tidal volumes for acute lung injury and the acute respiratory distress syndrome. N Engl J Med. 2000;342(18):1301-1308.
3. Neto AS, Simonis FD, Barbas CSV, et al. Lung-protective ventilation with low tidal volumes and the occurrence of pulmonary complications in patients without acute respiratory distress syndrome: a systematic review and individual patient data analysis. Crit Care Med. 2015;43(10):2155-2163.
4. Adler A, Boyle A. Electrical impedance tomography: tissue properties to image measures. IEEE Trans Biomed Eng. 2017;64(11):2494-2504.
5. Jang GY, Ayoub G, Kim YE, et al. Integrated EIT system for functional lung ventilation imaging. Biomed Eng Online. 2019;18(1):83.
6. Sella N, Pettenuzzo T, Zarantonello F, et al. Electrical impedance tomography: a compass for the safe route to optimal PEEP. Respir Med. 2021;187:106555.
7. Jimenez JV, Munroe E, Weirauch AJ, et al. Electric impedance tomography-guided PEEP titration reduces mechanical power in ARDS: a randomized crossover pilot trial. Crit Care. 2023;27(1):21.
8. Costa ELV, Borges JB, Melo A, et al. Bedside estimation of recruitable alveolar collapse and hyperdistension by electrical impedance tomography. Intensive Care Med. 2009;35(6):1132-1137.9. Riera J, Pérez P, Cortés J, Roca O, Masclans JR, Rello J. Effect of high-flow nasal cannula and body position on end-expiratory lung volume: a cohort study using electrical impedance tomography. Respir Care. 2013;58(4):589-596.10. Wisse JJ, Goos TG, Jonkman AH, et al. Electrical impedance tomography as a monitoring tool during weaning from mechanical ventilation: an observational study during the spontaneous breathing trial. Respir Res. 2024;25(1):179.
CRITICAL CARE NETWORK
Mechanical Ventilation and Airways Management Section
1,2,3 Continuous monitoring of the tidal volume, plateau pressure, and positive end-expiratory pressure (PEEP) is crucial to maintain LPV. Electrical impedance tomography (EIT) is a noninvasive, radiation-free, imaging method of the electrical conductivity distribution inside the human body.4 Integrating EIT into invasive mechanical ventilation allows imaging of the regional lung ventilation as affected by the mechanical ventilation settings as well as the patient position. It can also provide a personalized approach to determining the optimum ventilatory settings based on individual patient conditions.5,6
Optimum PEEP titration is crucial to prevent lung collapse as well as overdistension. In a single-center, randomized, crossover pilot study of 12 patients, optimum PEEP titration was carried out using a high PEEP/FiO2 table vs EIT in moderate to severe ARDS. The primary endpoint was the reduction of mechanical power, which was consistently lower in the EIT group.7 EIT also allows the assessment of regional compliance of the lungs. There are reports regarding the superiority of regional compliance of lung over global compliance in achieving better gas exchange, lung compliance, and weaning of mechanical ventilation.8 EIT could assess the patient’s response to prone positioning by illustrating the change in the functional residual capacity between supine and prone positioning.9 In addition, by visualization of the ventilated areas during spontaneous breathing and reduction of pressure support, EIT could help in weaning off the mechanical ventilation.10
In conclusion, EIT can be a tool to provide safe and personalized mechanical ventilation in patients with respiratory failure. However, there are limited data regarding its use and application, which might become an interesting subject for future clinical research.
– Akram M. Zaaqoq, MD, MPH
Member-at-Large
References
1. Amato MB, Barbas CS, Medeiros DM, et al. Effect of a protective-ventilation strategy on mortality in the acute respiratory distress syndrome. N Engl J Med. 1998;338(6):347-354.
2. Brower RG, Matthay MA, Morris A, et al. Ventilation with lower tidal volumes as compared with traditional tidal volumes for acute lung injury and the acute respiratory distress syndrome. N Engl J Med. 2000;342(18):1301-1308.
3. Neto AS, Simonis FD, Barbas CSV, et al. Lung-protective ventilation with low tidal volumes and the occurrence of pulmonary complications in patients without acute respiratory distress syndrome: a systematic review and individual patient data analysis. Crit Care Med. 2015;43(10):2155-2163.
4. Adler A, Boyle A. Electrical impedance tomography: tissue properties to image measures. IEEE Trans Biomed Eng. 2017;64(11):2494-2504.
5. Jang GY, Ayoub G, Kim YE, et al. Integrated EIT system for functional lung ventilation imaging. Biomed Eng Online. 2019;18(1):83.
6. Sella N, Pettenuzzo T, Zarantonello F, et al. Electrical impedance tomography: a compass for the safe route to optimal PEEP. Respir Med. 2021;187:106555.
7. Jimenez JV, Munroe E, Weirauch AJ, et al. Electric impedance tomography-guided PEEP titration reduces mechanical power in ARDS: a randomized crossover pilot trial. Crit Care. 2023;27(1):21.
8. Costa ELV, Borges JB, Melo A, et al. Bedside estimation of recruitable alveolar collapse and hyperdistension by electrical impedance tomography. Intensive Care Med. 2009;35(6):1132-1137.9. Riera J, Pérez P, Cortés J, Roca O, Masclans JR, Rello J. Effect of high-flow nasal cannula and body position on end-expiratory lung volume: a cohort study using electrical impedance tomography. Respir Care. 2013;58(4):589-596.10. Wisse JJ, Goos TG, Jonkman AH, et al. Electrical impedance tomography as a monitoring tool during weaning from mechanical ventilation: an observational study during the spontaneous breathing trial. Respir Res. 2024;25(1):179.
Fighting for fresh air: RSV’s connection to environmental pollution
Diffuse Lung Disease and Lung Transplant Network
Occupational and Environmental Health Section
Poor air quality has numerous health hazards for patients with chronic lung disease. Now mounting evidence from pediatric studies suggests a concerning link between air pollution and viral infections, specifically respiratory syncytial virus (RSV).
Multiple studies have shown increased incidence and severity of disease in children with exposure to air pollutants such as particulate matter and nitrogen dioxide.1,2,3 Researchers speculate that these pollutants potentiate viral entry to airway epithelium, increase viral load, and dysregulate the immune response.4 Air pollution, increasingly worsened by climate change, is also associated with acute respiratory infections in adults, though adult research remains sparse.5
The adoption of viral testing during the pandemic has revealed a previously under-recognized prevalence of RSV in adults.
RSV accounts for an estimated 60,000 to 160,000 hospitalizations and 6,000 to 10,000 deaths annually among elderly adults. This newfound awareness coincides with the exciting development of a new RSV vaccine that has shown around 85% efficacy at preventing symptomatic RSV infection in the first year, and new data suggest benefits persisting even into the second year after vaccination.6 With an estimated 60 million adults at high risk for RSV in the US, RSV prevention has become an increasingly important aspect of respiratory care.
While more research is needed to definitively quantify the link between air pollution and RSV in adults, the existing data offer valuable insights for all pulmonologists. These findings suggest a benefit in counseling patients with chronic lung conditions on taking steps to mitigate exposure to air pollutants, either through avoidance of outdoor activities or mask-wearing when air quality levels exceed healthy ranges, as well as promoting RSV vaccination for patients who are at risk.7
References
1. Milani GP, Cafora M, Favero C, et al. PM2.5, PM10 and bronchiolitis severity: a cohort study. Pediatr Allergy Immunol. 2022;33(10). https://doi.org/10.1111/pai.13853
2. Wrotek A, Badyda A, Czechowski PO, Owczarek T, Dąbrowiecki P, Jackowska T. Air pollutants’ concentrations are associated with increased number of RSV hospitalizations in Polish children. J Clin Med. 2021;10(15):3224. https://doi.org/10.3390/jcm10153224
3. Horne BD, Joy EA, Hofmann MG, et al. Short-term elevation of fine particulate matter air pollution and acute lower respiratory infection. Am J Respir Crit Care Med. 2018;198(6):759-766. https://doi.org/10.1164/rccm.201709-1883oc
4. Wrotek A, Jackowska T. Molecular mechanisms of RSV and air pollution interaction: a scoping review. Int J Mol Sci. 2022;23(20):12704. https://doi.org/10.3390/ijms232012704
5. Kirwa K, Eckert CM, Vedal S, Hajat A, Kaufman JD. Ambient air pollution and risk of respiratory infection among adults: evidence from the multiethnic study of atherosclerosis (MESA). BMJ Open Respir Res. 2021;8(1). https://doi.org/10.1136/bmjresp-2020-000866
6. Melgar M, Britton A, Roper LE, et al. Use of respiratory syncytial virus vaccines in older adults: recommendations of the Advisory Committee on Immunization Practices — United States, 2023. MMWR Morb Mortal Wkly Rep. 2023;72(29):793-801. http://dx.doi.org/10.15585/mmwr.mm7229a4
7. Kodros JK, O’Dell K, Samet JM, L’Orange C, Pierce JR, Volckens J. Quantifying the health benefits of face masks and respirators to mitigate exposure to severe air pollution. GeoHealth. 2021;5(9). https://doi.org/10.1029/2021gh000482
Diffuse Lung Disease and Lung Transplant Network
Occupational and Environmental Health Section
Poor air quality has numerous health hazards for patients with chronic lung disease. Now mounting evidence from pediatric studies suggests a concerning link between air pollution and viral infections, specifically respiratory syncytial virus (RSV).
Multiple studies have shown increased incidence and severity of disease in children with exposure to air pollutants such as particulate matter and nitrogen dioxide.1,2,3 Researchers speculate that these pollutants potentiate viral entry to airway epithelium, increase viral load, and dysregulate the immune response.4 Air pollution, increasingly worsened by climate change, is also associated with acute respiratory infections in adults, though adult research remains sparse.5
The adoption of viral testing during the pandemic has revealed a previously under-recognized prevalence of RSV in adults.
RSV accounts for an estimated 60,000 to 160,000 hospitalizations and 6,000 to 10,000 deaths annually among elderly adults. This newfound awareness coincides with the exciting development of a new RSV vaccine that has shown around 85% efficacy at preventing symptomatic RSV infection in the first year, and new data suggest benefits persisting even into the second year after vaccination.6 With an estimated 60 million adults at high risk for RSV in the US, RSV prevention has become an increasingly important aspect of respiratory care.
While more research is needed to definitively quantify the link between air pollution and RSV in adults, the existing data offer valuable insights for all pulmonologists. These findings suggest a benefit in counseling patients with chronic lung conditions on taking steps to mitigate exposure to air pollutants, either through avoidance of outdoor activities or mask-wearing when air quality levels exceed healthy ranges, as well as promoting RSV vaccination for patients who are at risk.7
References
1. Milani GP, Cafora M, Favero C, et al. PM2.5, PM10 and bronchiolitis severity: a cohort study. Pediatr Allergy Immunol. 2022;33(10). https://doi.org/10.1111/pai.13853
2. Wrotek A, Badyda A, Czechowski PO, Owczarek T, Dąbrowiecki P, Jackowska T. Air pollutants’ concentrations are associated with increased number of RSV hospitalizations in Polish children. J Clin Med. 2021;10(15):3224. https://doi.org/10.3390/jcm10153224
3. Horne BD, Joy EA, Hofmann MG, et al. Short-term elevation of fine particulate matter air pollution and acute lower respiratory infection. Am J Respir Crit Care Med. 2018;198(6):759-766. https://doi.org/10.1164/rccm.201709-1883oc
4. Wrotek A, Jackowska T. Molecular mechanisms of RSV and air pollution interaction: a scoping review. Int J Mol Sci. 2022;23(20):12704. https://doi.org/10.3390/ijms232012704
5. Kirwa K, Eckert CM, Vedal S, Hajat A, Kaufman JD. Ambient air pollution and risk of respiratory infection among adults: evidence from the multiethnic study of atherosclerosis (MESA). BMJ Open Respir Res. 2021;8(1). https://doi.org/10.1136/bmjresp-2020-000866
6. Melgar M, Britton A, Roper LE, et al. Use of respiratory syncytial virus vaccines in older adults: recommendations of the Advisory Committee on Immunization Practices — United States, 2023. MMWR Morb Mortal Wkly Rep. 2023;72(29):793-801. http://dx.doi.org/10.15585/mmwr.mm7229a4
7. Kodros JK, O’Dell K, Samet JM, L’Orange C, Pierce JR, Volckens J. Quantifying the health benefits of face masks and respirators to mitigate exposure to severe air pollution. GeoHealth. 2021;5(9). https://doi.org/10.1029/2021gh000482
Diffuse Lung Disease and Lung Transplant Network
Occupational and Environmental Health Section
Poor air quality has numerous health hazards for patients with chronic lung disease. Now mounting evidence from pediatric studies suggests a concerning link between air pollution and viral infections, specifically respiratory syncytial virus (RSV).
Multiple studies have shown increased incidence and severity of disease in children with exposure to air pollutants such as particulate matter and nitrogen dioxide.1,2,3 Researchers speculate that these pollutants potentiate viral entry to airway epithelium, increase viral load, and dysregulate the immune response.4 Air pollution, increasingly worsened by climate change, is also associated with acute respiratory infections in adults, though adult research remains sparse.5
The adoption of viral testing during the pandemic has revealed a previously under-recognized prevalence of RSV in adults.
RSV accounts for an estimated 60,000 to 160,000 hospitalizations and 6,000 to 10,000 deaths annually among elderly adults. This newfound awareness coincides with the exciting development of a new RSV vaccine that has shown around 85% efficacy at preventing symptomatic RSV infection in the first year, and new data suggest benefits persisting even into the second year after vaccination.6 With an estimated 60 million adults at high risk for RSV in the US, RSV prevention has become an increasingly important aspect of respiratory care.
While more research is needed to definitively quantify the link between air pollution and RSV in adults, the existing data offer valuable insights for all pulmonologists. These findings suggest a benefit in counseling patients with chronic lung conditions on taking steps to mitigate exposure to air pollutants, either through avoidance of outdoor activities or mask-wearing when air quality levels exceed healthy ranges, as well as promoting RSV vaccination for patients who are at risk.7
References
1. Milani GP, Cafora M, Favero C, et al. PM2.5, PM10 and bronchiolitis severity: a cohort study. Pediatr Allergy Immunol. 2022;33(10). https://doi.org/10.1111/pai.13853
2. Wrotek A, Badyda A, Czechowski PO, Owczarek T, Dąbrowiecki P, Jackowska T. Air pollutants’ concentrations are associated with increased number of RSV hospitalizations in Polish children. J Clin Med. 2021;10(15):3224. https://doi.org/10.3390/jcm10153224
3. Horne BD, Joy EA, Hofmann MG, et al. Short-term elevation of fine particulate matter air pollution and acute lower respiratory infection. Am J Respir Crit Care Med. 2018;198(6):759-766. https://doi.org/10.1164/rccm.201709-1883oc
4. Wrotek A, Jackowska T. Molecular mechanisms of RSV and air pollution interaction: a scoping review. Int J Mol Sci. 2022;23(20):12704. https://doi.org/10.3390/ijms232012704
5. Kirwa K, Eckert CM, Vedal S, Hajat A, Kaufman JD. Ambient air pollution and risk of respiratory infection among adults: evidence from the multiethnic study of atherosclerosis (MESA). BMJ Open Respir Res. 2021;8(1). https://doi.org/10.1136/bmjresp-2020-000866
6. Melgar M, Britton A, Roper LE, et al. Use of respiratory syncytial virus vaccines in older adults: recommendations of the Advisory Committee on Immunization Practices — United States, 2023. MMWR Morb Mortal Wkly Rep. 2023;72(29):793-801. http://dx.doi.org/10.15585/mmwr.mm7229a4
7. Kodros JK, O’Dell K, Samet JM, L’Orange C, Pierce JR, Volckens J. Quantifying the health benefits of face masks and respirators to mitigate exposure to severe air pollution. GeoHealth. 2021;5(9). https://doi.org/10.1029/2021gh000482
Transesophageal ultrasound: The future of ultrasound in the ICU
Thoracic Oncology and Chest Procedures Network
Ultrasound and Chest Imaging Section
Historically, transesophageal ultrasound (TEE) has been regarded as a diagnostic and management tool for structural heart disease in relatively stable patients. However, TEE is more commonly being utilized by intensivists as a first-line tool in the diagnostics and management of patients in the ICU.
TEE, with its unobstructed superior cardiac views, facilitates rapid diagnosis in undifferentiated shock and guides appropriate resuscitation efforts. Studies have shown that TEE alters management strategies in 40% of cases, following transthoracic echocardiography with an extremely low complication rate of 2% to 3% (primarily in the form of self-limited gastrointestinal bleeding).1,2,3,4
TEE also provides ultrasonographic evaluation of the lungs through transesophageal lung ultrasound (TELUS). TELUS allows for visualization of all six traditional lung zones utilized in traditional lung ultrasound.5 Patients with severe acute respiratory distress syndrome may greatly benefit from TEE utilization. TEE enables early detection of right ventricular dysfunction, aids in fluid management, and assesses the severity of lung consolidation, thereby facilitating prompt utilization of prone positioning or adjustments in positive end-expiratory pressure.
Cardiac arrest is another unique opportunity for TEE utilization by providing real-time cardiac visualization during active cardiopulmonary resuscitation. This facilitates optimal chest compression positioning, early recognition of arrhythmia, timely identification of reversible cause, and procedural guidance for ECMO-assisted CPR.6 TEE is an invaluable tool for the modern-day intensivist, providing rapid and accurate assessments, and therefore holds the potential to become standard of care in the ICU.
References
1. Prager R, Bowdridge J, Pratte M, Cheng J, McInnes MD, Arntfield R. Indications, clinical impact, and complications of critical care transesophageal echocardiography: a scoping review. J Intensive Care Med. 2023;38(3):245-272. Preprint. Posted online July 19, 2022. PMID: 35854414; PMCID: PMC9806486. doi: 10.1177/08850666221115348
2. Hüttemann E, Schelenz C, Kara F, Chatzinikolaou K, Reinhart K. The use and safety of transoesophageal echocardiography in the general ICU – a minireview. Acta Anaesthesiol Scand. 2004;48(7):827-36. PMID: 15242426. doi: 10.1111/j.0001-5172.2004.00423.x
3. Mayo PH, Narasimhan M, Koenig S. Critical care transesophageal echocardiography. Chest. 2015;148(5):1323-1332. PMID: 26204465. doi: 10.1378/chest.15-0260
4. Prager R, Ainsworth C, Arntfield R. Critical care transesophageal echocardiography for the resuscitation of shock: an important diagnostic skill for the modern intensivist. Chest. 2023;163(2):268-269. PMID: 36759112. doi: 10.1016/j.chest.2022.09.001
5. Cavayas YA, Girard M, Desjardins G, Denault AY. Transesophageal lung ultrasonography: a novel technique for investigating hypoxemia. Can J Anaesth. 2016;63(11):1266-76. Preprint. Posted online July 29, 2016. PMID: 27473720. doi: 10.1007/s12630-016-0702-2
6. Teran F, Prats MI, Nelson BP, et al. Focused transesophageal echocardiography during cardiac arrest resuscitation: JACC review wopic of the Week. J Am Coll Cardiol. 2020;76(6):745-754. PMID: 32762909. doi: 10.1016/j.jacc.2020.05.074
Thoracic Oncology and Chest Procedures Network
Ultrasound and Chest Imaging Section
Historically, transesophageal ultrasound (TEE) has been regarded as a diagnostic and management tool for structural heart disease in relatively stable patients. However, TEE is more commonly being utilized by intensivists as a first-line tool in the diagnostics and management of patients in the ICU.
TEE, with its unobstructed superior cardiac views, facilitates rapid diagnosis in undifferentiated shock and guides appropriate resuscitation efforts. Studies have shown that TEE alters management strategies in 40% of cases, following transthoracic echocardiography with an extremely low complication rate of 2% to 3% (primarily in the form of self-limited gastrointestinal bleeding).1,2,3,4
TEE also provides ultrasonographic evaluation of the lungs through transesophageal lung ultrasound (TELUS). TELUS allows for visualization of all six traditional lung zones utilized in traditional lung ultrasound.5 Patients with severe acute respiratory distress syndrome may greatly benefit from TEE utilization. TEE enables early detection of right ventricular dysfunction, aids in fluid management, and assesses the severity of lung consolidation, thereby facilitating prompt utilization of prone positioning or adjustments in positive end-expiratory pressure.
Cardiac arrest is another unique opportunity for TEE utilization by providing real-time cardiac visualization during active cardiopulmonary resuscitation. This facilitates optimal chest compression positioning, early recognition of arrhythmia, timely identification of reversible cause, and procedural guidance for ECMO-assisted CPR.6 TEE is an invaluable tool for the modern-day intensivist, providing rapid and accurate assessments, and therefore holds the potential to become standard of care in the ICU.
References
1. Prager R, Bowdridge J, Pratte M, Cheng J, McInnes MD, Arntfield R. Indications, clinical impact, and complications of critical care transesophageal echocardiography: a scoping review. J Intensive Care Med. 2023;38(3):245-272. Preprint. Posted online July 19, 2022. PMID: 35854414; PMCID: PMC9806486. doi: 10.1177/08850666221115348
2. Hüttemann E, Schelenz C, Kara F, Chatzinikolaou K, Reinhart K. The use and safety of transoesophageal echocardiography in the general ICU – a minireview. Acta Anaesthesiol Scand. 2004;48(7):827-36. PMID: 15242426. doi: 10.1111/j.0001-5172.2004.00423.x
3. Mayo PH, Narasimhan M, Koenig S. Critical care transesophageal echocardiography. Chest. 2015;148(5):1323-1332. PMID: 26204465. doi: 10.1378/chest.15-0260
4. Prager R, Ainsworth C, Arntfield R. Critical care transesophageal echocardiography for the resuscitation of shock: an important diagnostic skill for the modern intensivist. Chest. 2023;163(2):268-269. PMID: 36759112. doi: 10.1016/j.chest.2022.09.001
5. Cavayas YA, Girard M, Desjardins G, Denault AY. Transesophageal lung ultrasonography: a novel technique for investigating hypoxemia. Can J Anaesth. 2016;63(11):1266-76. Preprint. Posted online July 29, 2016. PMID: 27473720. doi: 10.1007/s12630-016-0702-2
6. Teran F, Prats MI, Nelson BP, et al. Focused transesophageal echocardiography during cardiac arrest resuscitation: JACC review wopic of the Week. J Am Coll Cardiol. 2020;76(6):745-754. PMID: 32762909. doi: 10.1016/j.jacc.2020.05.074
Thoracic Oncology and Chest Procedures Network
Ultrasound and Chest Imaging Section
Historically, transesophageal ultrasound (TEE) has been regarded as a diagnostic and management tool for structural heart disease in relatively stable patients. However, TEE is more commonly being utilized by intensivists as a first-line tool in the diagnostics and management of patients in the ICU.
TEE, with its unobstructed superior cardiac views, facilitates rapid diagnosis in undifferentiated shock and guides appropriate resuscitation efforts. Studies have shown that TEE alters management strategies in 40% of cases, following transthoracic echocardiography with an extremely low complication rate of 2% to 3% (primarily in the form of self-limited gastrointestinal bleeding).1,2,3,4
TEE also provides ultrasonographic evaluation of the lungs through transesophageal lung ultrasound (TELUS). TELUS allows for visualization of all six traditional lung zones utilized in traditional lung ultrasound.5 Patients with severe acute respiratory distress syndrome may greatly benefit from TEE utilization. TEE enables early detection of right ventricular dysfunction, aids in fluid management, and assesses the severity of lung consolidation, thereby facilitating prompt utilization of prone positioning or adjustments in positive end-expiratory pressure.
Cardiac arrest is another unique opportunity for TEE utilization by providing real-time cardiac visualization during active cardiopulmonary resuscitation. This facilitates optimal chest compression positioning, early recognition of arrhythmia, timely identification of reversible cause, and procedural guidance for ECMO-assisted CPR.6 TEE is an invaluable tool for the modern-day intensivist, providing rapid and accurate assessments, and therefore holds the potential to become standard of care in the ICU.
References
1. Prager R, Bowdridge J, Pratte M, Cheng J, McInnes MD, Arntfield R. Indications, clinical impact, and complications of critical care transesophageal echocardiography: a scoping review. J Intensive Care Med. 2023;38(3):245-272. Preprint. Posted online July 19, 2022. PMID: 35854414; PMCID: PMC9806486. doi: 10.1177/08850666221115348
2. Hüttemann E, Schelenz C, Kara F, Chatzinikolaou K, Reinhart K. The use and safety of transoesophageal echocardiography in the general ICU – a minireview. Acta Anaesthesiol Scand. 2004;48(7):827-36. PMID: 15242426. doi: 10.1111/j.0001-5172.2004.00423.x
3. Mayo PH, Narasimhan M, Koenig S. Critical care transesophageal echocardiography. Chest. 2015;148(5):1323-1332. PMID: 26204465. doi: 10.1378/chest.15-0260
4. Prager R, Ainsworth C, Arntfield R. Critical care transesophageal echocardiography for the resuscitation of shock: an important diagnostic skill for the modern intensivist. Chest. 2023;163(2):268-269. PMID: 36759112. doi: 10.1016/j.chest.2022.09.001
5. Cavayas YA, Girard M, Desjardins G, Denault AY. Transesophageal lung ultrasonography: a novel technique for investigating hypoxemia. Can J Anaesth. 2016;63(11):1266-76. Preprint. Posted online July 29, 2016. PMID: 27473720. doi: 10.1007/s12630-016-0702-2
6. Teran F, Prats MI, Nelson BP, et al. Focused transesophageal echocardiography during cardiac arrest resuscitation: JACC review wopic of the Week. J Am Coll Cardiol. 2020;76(6):745-754. PMID: 32762909. doi: 10.1016/j.jacc.2020.05.074
The pendulum swings in favor of corticosteroids
Critical Care Network
Sepsis/Shock Section
The pendulum swings in favor of corticosteroids and endorses the colloquialism among intensivists that no patient shall die without steroids, especially as it relates to sepsis and septic shock.
In 2018, we saw divergence among randomized controlled trials in the use of glucocorticoids for adults with septic shock such that hydrocortisone without the use of fludrocortisone showed no 90-day mortality benefit; however, hydrocortisone with fludrocortisone showed a 90-day mortality benefit.1,2 The Surviving Sepsis Guidelines in 2021 favored using low-dose corticosteroids in those with persistent vasopressor requirements in whom other core interventions had been instituted.
In 2023, a patient-level meta-analysis of low-dose hydrocortisone in adults with septic shock included seven trials and failed to demonstrate a mortality benefit by relative risk in those who received hydrocortisone compared with placebo. Separately, a network meta-analysis with hydrocortisone plus enteral fludrocortisone was associated with a 90-day all-cause mortality. Of the secondary outcomes, these results offered a possible association of hydrocortisone with a decreased risk of ICU mortality and with increased vasopressor-free days.3
The 2024 Society of Critical Care Medicine recently shared an update of focused guidelines on the use of corticosteroids in sepsis, acute respiratory distress syndrome, and community-acquired pneumonia. These included a conditional recommendation to administer corticosteroids for patients with septic shock but recommended against high-dose/short-duration administration of corticosteroids in these patients. These guidelines were supported by data from 46 randomized controlled trials, which showed that corticosteroid use may reduce hospital/long-term mortality and ICU/short-term mortality, as well as result in higher rates of shock reversal and reduced organ dysfunction.
With the results of these meta-analyses and randomized controlled trials, clinicians should consider low-dose corticosteroids paired with fludrocortisone as a tool in treating patients with septic shock given that the short- and long-term benefits may exceed any risks.
References
1. Venkatesh B, et al. Adjunctive glucocorticoid therapy in patients with septic shock. N Engl J Med. 2018;378:797-808.
2. Annane D, et al. Hydrocortisone plus fludrocortisone for adults with septic shock. N Engl J Med. 2018;378:809-818.
3. Pirracchio R, et al. Patient-level meta-analysis of low-dose hydrocortisone in adults with septic shock. NEJM Evid. 2023;2(6).
Critical Care Network
Sepsis/Shock Section
The pendulum swings in favor of corticosteroids and endorses the colloquialism among intensivists that no patient shall die without steroids, especially as it relates to sepsis and septic shock.
In 2018, we saw divergence among randomized controlled trials in the use of glucocorticoids for adults with septic shock such that hydrocortisone without the use of fludrocortisone showed no 90-day mortality benefit; however, hydrocortisone with fludrocortisone showed a 90-day mortality benefit.1,2 The Surviving Sepsis Guidelines in 2021 favored using low-dose corticosteroids in those with persistent vasopressor requirements in whom other core interventions had been instituted.
In 2023, a patient-level meta-analysis of low-dose hydrocortisone in adults with septic shock included seven trials and failed to demonstrate a mortality benefit by relative risk in those who received hydrocortisone compared with placebo. Separately, a network meta-analysis with hydrocortisone plus enteral fludrocortisone was associated with a 90-day all-cause mortality. Of the secondary outcomes, these results offered a possible association of hydrocortisone with a decreased risk of ICU mortality and with increased vasopressor-free days.3
The 2024 Society of Critical Care Medicine recently shared an update of focused guidelines on the use of corticosteroids in sepsis, acute respiratory distress syndrome, and community-acquired pneumonia. These included a conditional recommendation to administer corticosteroids for patients with septic shock but recommended against high-dose/short-duration administration of corticosteroids in these patients. These guidelines were supported by data from 46 randomized controlled trials, which showed that corticosteroid use may reduce hospital/long-term mortality and ICU/short-term mortality, as well as result in higher rates of shock reversal and reduced organ dysfunction.
With the results of these meta-analyses and randomized controlled trials, clinicians should consider low-dose corticosteroids paired with fludrocortisone as a tool in treating patients with septic shock given that the short- and long-term benefits may exceed any risks.
References
1. Venkatesh B, et al. Adjunctive glucocorticoid therapy in patients with septic shock. N Engl J Med. 2018;378:797-808.
2. Annane D, et al. Hydrocortisone plus fludrocortisone for adults with septic shock. N Engl J Med. 2018;378:809-818.
3. Pirracchio R, et al. Patient-level meta-analysis of low-dose hydrocortisone in adults with septic shock. NEJM Evid. 2023;2(6).
Critical Care Network
Sepsis/Shock Section
The pendulum swings in favor of corticosteroids and endorses the colloquialism among intensivists that no patient shall die without steroids, especially as it relates to sepsis and septic shock.
In 2018, we saw divergence among randomized controlled trials in the use of glucocorticoids for adults with septic shock such that hydrocortisone without the use of fludrocortisone showed no 90-day mortality benefit; however, hydrocortisone with fludrocortisone showed a 90-day mortality benefit.1,2 The Surviving Sepsis Guidelines in 2021 favored using low-dose corticosteroids in those with persistent vasopressor requirements in whom other core interventions had been instituted.
In 2023, a patient-level meta-analysis of low-dose hydrocortisone in adults with septic shock included seven trials and failed to demonstrate a mortality benefit by relative risk in those who received hydrocortisone compared with placebo. Separately, a network meta-analysis with hydrocortisone plus enteral fludrocortisone was associated with a 90-day all-cause mortality. Of the secondary outcomes, these results offered a possible association of hydrocortisone with a decreased risk of ICU mortality and with increased vasopressor-free days.3
The 2024 Society of Critical Care Medicine recently shared an update of focused guidelines on the use of corticosteroids in sepsis, acute respiratory distress syndrome, and community-acquired pneumonia. These included a conditional recommendation to administer corticosteroids for patients with septic shock but recommended against high-dose/short-duration administration of corticosteroids in these patients. These guidelines were supported by data from 46 randomized controlled trials, which showed that corticosteroid use may reduce hospital/long-term mortality and ICU/short-term mortality, as well as result in higher rates of shock reversal and reduced organ dysfunction.
With the results of these meta-analyses and randomized controlled trials, clinicians should consider low-dose corticosteroids paired with fludrocortisone as a tool in treating patients with septic shock given that the short- and long-term benefits may exceed any risks.
References
1. Venkatesh B, et al. Adjunctive glucocorticoid therapy in patients with septic shock. N Engl J Med. 2018;378:797-808.
2. Annane D, et al. Hydrocortisone plus fludrocortisone for adults with septic shock. N Engl J Med. 2018;378:809-818.
3. Pirracchio R, et al. Patient-level meta-analysis of low-dose hydrocortisone in adults with septic shock. NEJM Evid. 2023;2(6).
Is it time to embrace a multinight sleep study?
Sleep Medicine Network
Respiratory-Related Sleep Disorders Section
Since the 1960s, sleep researchers have been intrigued by the first-night effect (FNE) in polysomnography (PSG) studies. A meta-analysis by Ding and colleagues revealed FNE’s impact on sleep metrics, like total sleep time and REM sleep, without affecting the apnea-hypopnea index, highlighting PSG’s limitations in simulating natural sleep patterns.1
Lechat and colleagues conducted a study using a home-based sleep analyzer on more than 67,000 individuals, averaging 170 nights each.2 This study found that single-night studies could lead to a 20% misdiagnosis rate in OSA, attributed to overlooking real sleep factors such as body posture, environmental effects, alcohol, and medication. Despite this, the wider use of multinight studies for accurate diagnosis is limited by insurance coverage issues.3
The last decade has seen substantial advances in health technology, particularly in consumer wearables capable of detecting various medical conditions. Devices employing techniques like actigraphy and accelerometry have reached a level of performance comparable with US Food and Drug Administration-approved clinical tools. However, these technologies are still in development for the diagnosis and classification of sleep-disordered breathing.
Tech companies are actively innovating sleep sensing technologies, smartwatches, bed sensors, wireless EEG, radiofrequency, and ultrasound sensors. With significant investments in this sector, these technologies could be ready for widespread use in the next 5 to 10 years. Health care professionals should consider data from sleep-tracking wearables when there are inconsistencies between a patient’s sleep study results and symptoms. The insights from these devices could provide crucial diagnostic information, enhancing the accuracy of sleep disorder diagnoses.
References
1. Ding L, Chen B, Dai Y, Li Y. A meta-analysis of the first-night effect in healthy individuals for the full age spectrum. Sleep Med. 2022;89:159-165. Preprint. Posted online December 17, 2021. PMID: 34998093. doi: 10.1016/j.sleep.2021.12.007
2. Lechat B, Naik G, Reynolds A, et al. Multinight prevalence, variability, and diagnostic misclassification of obstructive sleep apnea. Am J Respir Crit Care Med. 2022;205(5):563-569. PMID: 34904935; PMCID: PMC8906484. doi: 10.1164/rccm.202107-1761OC
3. Abreu A, Punjabi NM. How many nights are really needed to diagnose obstructive sleep apnea? Am J Respir Crit Care Med. 2022;206(1):125-126. PMID: 35476613; PMCID: PMC9954337. doi: 10.1164/rccm.202112-2837LE
Sleep Medicine Network
Respiratory-Related Sleep Disorders Section
Since the 1960s, sleep researchers have been intrigued by the first-night effect (FNE) in polysomnography (PSG) studies. A meta-analysis by Ding and colleagues revealed FNE’s impact on sleep metrics, like total sleep time and REM sleep, without affecting the apnea-hypopnea index, highlighting PSG’s limitations in simulating natural sleep patterns.1
Lechat and colleagues conducted a study using a home-based sleep analyzer on more than 67,000 individuals, averaging 170 nights each.2 This study found that single-night studies could lead to a 20% misdiagnosis rate in OSA, attributed to overlooking real sleep factors such as body posture, environmental effects, alcohol, and medication. Despite this, the wider use of multinight studies for accurate diagnosis is limited by insurance coverage issues.3
The last decade has seen substantial advances in health technology, particularly in consumer wearables capable of detecting various medical conditions. Devices employing techniques like actigraphy and accelerometry have reached a level of performance comparable with US Food and Drug Administration-approved clinical tools. However, these technologies are still in development for the diagnosis and classification of sleep-disordered breathing.
Tech companies are actively innovating sleep sensing technologies, smartwatches, bed sensors, wireless EEG, radiofrequency, and ultrasound sensors. With significant investments in this sector, these technologies could be ready for widespread use in the next 5 to 10 years. Health care professionals should consider data from sleep-tracking wearables when there are inconsistencies between a patient’s sleep study results and symptoms. The insights from these devices could provide crucial diagnostic information, enhancing the accuracy of sleep disorder diagnoses.
References
1. Ding L, Chen B, Dai Y, Li Y. A meta-analysis of the first-night effect in healthy individuals for the full age spectrum. Sleep Med. 2022;89:159-165. Preprint. Posted online December 17, 2021. PMID: 34998093. doi: 10.1016/j.sleep.2021.12.007
2. Lechat B, Naik G, Reynolds A, et al. Multinight prevalence, variability, and diagnostic misclassification of obstructive sleep apnea. Am J Respir Crit Care Med. 2022;205(5):563-569. PMID: 34904935; PMCID: PMC8906484. doi: 10.1164/rccm.202107-1761OC
3. Abreu A, Punjabi NM. How many nights are really needed to diagnose obstructive sleep apnea? Am J Respir Crit Care Med. 2022;206(1):125-126. PMID: 35476613; PMCID: PMC9954337. doi: 10.1164/rccm.202112-2837LE
Sleep Medicine Network
Respiratory-Related Sleep Disorders Section
Since the 1960s, sleep researchers have been intrigued by the first-night effect (FNE) in polysomnography (PSG) studies. A meta-analysis by Ding and colleagues revealed FNE’s impact on sleep metrics, like total sleep time and REM sleep, without affecting the apnea-hypopnea index, highlighting PSG’s limitations in simulating natural sleep patterns.1
Lechat and colleagues conducted a study using a home-based sleep analyzer on more than 67,000 individuals, averaging 170 nights each.2 This study found that single-night studies could lead to a 20% misdiagnosis rate in OSA, attributed to overlooking real sleep factors such as body posture, environmental effects, alcohol, and medication. Despite this, the wider use of multinight studies for accurate diagnosis is limited by insurance coverage issues.3
The last decade has seen substantial advances in health technology, particularly in consumer wearables capable of detecting various medical conditions. Devices employing techniques like actigraphy and accelerometry have reached a level of performance comparable with US Food and Drug Administration-approved clinical tools. However, these technologies are still in development for the diagnosis and classification of sleep-disordered breathing.
Tech companies are actively innovating sleep sensing technologies, smartwatches, bed sensors, wireless EEG, radiofrequency, and ultrasound sensors. With significant investments in this sector, these technologies could be ready for widespread use in the next 5 to 10 years. Health care professionals should consider data from sleep-tracking wearables when there are inconsistencies between a patient’s sleep study results and symptoms. The insights from these devices could provide crucial diagnostic information, enhancing the accuracy of sleep disorder diagnoses.
References
1. Ding L, Chen B, Dai Y, Li Y. A meta-analysis of the first-night effect in healthy individuals for the full age spectrum. Sleep Med. 2022;89:159-165. Preprint. Posted online December 17, 2021. PMID: 34998093. doi: 10.1016/j.sleep.2021.12.007
2. Lechat B, Naik G, Reynolds A, et al. Multinight prevalence, variability, and diagnostic misclassification of obstructive sleep apnea. Am J Respir Crit Care Med. 2022;205(5):563-569. PMID: 34904935; PMCID: PMC8906484. doi: 10.1164/rccm.202107-1761OC
3. Abreu A, Punjabi NM. How many nights are really needed to diagnose obstructive sleep apnea? Am J Respir Crit Care Med. 2022;206(1):125-126. PMID: 35476613; PMCID: PMC9954337. doi: 10.1164/rccm.202112-2837LE