Small Airways Response to Bronchodilators in Adults with Asthma or COPD: A Systematic Review

Mohammed A Almeshari,1,2 Nowaf Y Alobaidi,1,3 Elizabeth Sapey,1,4 Omar Usmani,5 Robert A Stockley,6 James A Stockley7 1Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, B15 2TT, UK; 2Rehabilitation Health Sciences Department, College of...

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Autores principales: Almeshari MA, Alobaidi NY, Sapey E, Usmani O, Stockley RA, Stockley JA
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Publicado: Dove Medical Press 2021
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spelling oai:doaj.org-article:41bead2fa12a43d1ae52137fed319fdc2021-11-11T18:22:26ZSmall Airways Response to Bronchodilators in Adults with Asthma or COPD: A Systematic Review1178-2005https://doaj.org/article/41bead2fa12a43d1ae52137fed319fdc2021-11-01T00:00:00Zhttps://www.dovepress.com/small-airways-response-to-bronchodilators-in-adults-with-asthma-or-cop-peer-reviewed-fulltext-article-COPDhttps://doaj.org/toc/1178-2005Mohammed A Almeshari,1,2 Nowaf Y Alobaidi,1,3 Elizabeth Sapey,1,4 Omar Usmani,5 Robert A Stockley,6 James A Stockley7 1Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, B15 2TT, UK; 2Rehabilitation Health Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia; 3Respiratory Therapy Department, King Saud Bin Abdulaziz University for Health Sciences, Alahsa, Saudi Arabia; 4Acute Medicine, University Hospitals Birmingham NHS Foundation Trust, Birmingham, B15 2GW, UK; 5Imperial College of London, London, UK; 6Department of Respiratory Medicine, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK; 7Lung Function & Sleep Department, Respiratory Medicine, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Birmingham, UKCorrespondence: Mohammed A AlmeshariRehabilitation Health Science Department, College of Applied Medical Sciences, King Saud University, P. Box 145111,, Riyadh, ZIP 4545, Saudi ArabiaTel +966 50 8033 880Email malmeshari@ksu.edu.saBackground: Bronchodilator responsiveness (BDR) is commonly used in the diagnosis of lung disease. Although small airways dysfunction is a feature of asthma and COPD, physiological tests of small airways are not included in guidelines for BDR testing. This systematic review assessed the current evidence of BDR using small airways function in asthma and COPD.Methods: The systematic review used standard methodology with the protocol prospectively registered on PROSPERO (CRD42020164140). Electronic medical databases (EMBASE and Medline) were searched using related keywords. Abstracts and full texts were screened independently by two reviewers. Studies that reported the change of physiological small airways function and FEV1 were included in the review. The revised Cochrane risk of bias tool for RCT and NIH quality assessment tool for cohort and cross-sectional studies were used to evaluate the studies.Results: A total of 934 articles were identified, with 12 meeting the inclusion criteria. Ten studies included asthma patients, 1 study included COPD patients and 1 study included both asthma and COPD. A total of 1104 participants were included, of whom 941 were asthmatic, 64 had COPD and 109 were healthy controls. Studies were heterogeneous in design including the device, dose and time intervals for BDR assessment. A small airway BDR was seen for most tests in asthma and COPD, including oscillometry (R5-20, reactance (X5), area of reactance (AX) and resonant frequency (Fres)) and Maximal Mid Expiratory Flow.Conclusion: There is a measurable BDR in the small airways. However, with no consensus on how to assess BDR, studies were heterogeneous. Further research is needed to inform how BDR should be assessed, its clinical impact and place in routine clinical practice.Keywords: asthma, COPD, bronchodilator, reversibility, small airways functionAlmeshari MAAlobaidi NYSapey EUsmani OStockley RAStockley JADove Medical Pressarticleasthmacopdbronchodilatorreversibilitysmall airways function.Diseases of the respiratory systemRC705-779ENInternational Journal of COPD, Vol Volume 16, Pp 3065-3082 (2021)
institution DOAJ
collection DOAJ
language EN
topic asthma
copd
bronchodilator
reversibility
small airways function.
Diseases of the respiratory system
RC705-779
spellingShingle asthma
copd
bronchodilator
reversibility
small airways function.
Diseases of the respiratory system
RC705-779
Almeshari MA
Alobaidi NY
Sapey E
Usmani O
Stockley RA
Stockley JA
Small Airways Response to Bronchodilators in Adults with Asthma or COPD: A Systematic Review
description Mohammed A Almeshari,1,2 Nowaf Y Alobaidi,1,3 Elizabeth Sapey,1,4 Omar Usmani,5 Robert A Stockley,6 James A Stockley7 1Birmingham Acute Care Research Group, Institute of Inflammation and Ageing, University of Birmingham, Birmingham, B15 2TT, UK; 2Rehabilitation Health Sciences Department, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia; 3Respiratory Therapy Department, King Saud Bin Abdulaziz University for Health Sciences, Alahsa, Saudi Arabia; 4Acute Medicine, University Hospitals Birmingham NHS Foundation Trust, Birmingham, B15 2GW, UK; 5Imperial College of London, London, UK; 6Department of Respiratory Medicine, University Hospitals Birmingham NHS Foundation Trust, Birmingham, UK; 7Lung Function & Sleep Department, Respiratory Medicine, University Hospitals Birmingham NHS Foundation Trust, Queen Elizabeth Hospital Birmingham, Birmingham, UKCorrespondence: Mohammed A AlmeshariRehabilitation Health Science Department, College of Applied Medical Sciences, King Saud University, P. Box 145111,, Riyadh, ZIP 4545, Saudi ArabiaTel +966 50 8033 880Email malmeshari@ksu.edu.saBackground: Bronchodilator responsiveness (BDR) is commonly used in the diagnosis of lung disease. Although small airways dysfunction is a feature of asthma and COPD, physiological tests of small airways are not included in guidelines for BDR testing. This systematic review assessed the current evidence of BDR using small airways function in asthma and COPD.Methods: The systematic review used standard methodology with the protocol prospectively registered on PROSPERO (CRD42020164140). Electronic medical databases (EMBASE and Medline) were searched using related keywords. Abstracts and full texts were screened independently by two reviewers. Studies that reported the change of physiological small airways function and FEV1 were included in the review. The revised Cochrane risk of bias tool for RCT and NIH quality assessment tool for cohort and cross-sectional studies were used to evaluate the studies.Results: A total of 934 articles were identified, with 12 meeting the inclusion criteria. Ten studies included asthma patients, 1 study included COPD patients and 1 study included both asthma and COPD. A total of 1104 participants were included, of whom 941 were asthmatic, 64 had COPD and 109 were healthy controls. Studies were heterogeneous in design including the device, dose and time intervals for BDR assessment. A small airway BDR was seen for most tests in asthma and COPD, including oscillometry (R5-20, reactance (X5), area of reactance (AX) and resonant frequency (Fres)) and Maximal Mid Expiratory Flow.Conclusion: There is a measurable BDR in the small airways. However, with no consensus on how to assess BDR, studies were heterogeneous. Further research is needed to inform how BDR should be assessed, its clinical impact and place in routine clinical practice.Keywords: asthma, COPD, bronchodilator, reversibility, small airways function
format article
author Almeshari MA
Alobaidi NY
Sapey E
Usmani O
Stockley RA
Stockley JA
author_facet Almeshari MA
Alobaidi NY
Sapey E
Usmani O
Stockley RA
Stockley JA
author_sort Almeshari MA
title Small Airways Response to Bronchodilators in Adults with Asthma or COPD: A Systematic Review
title_short Small Airways Response to Bronchodilators in Adults with Asthma or COPD: A Systematic Review
title_full Small Airways Response to Bronchodilators in Adults with Asthma or COPD: A Systematic Review
title_fullStr Small Airways Response to Bronchodilators in Adults with Asthma or COPD: A Systematic Review
title_full_unstemmed Small Airways Response to Bronchodilators in Adults with Asthma or COPD: A Systematic Review
title_sort small airways response to bronchodilators in adults with asthma or copd: a systematic review
publisher Dove Medical Press
publishDate 2021
url https://doaj.org/article/41bead2fa12a43d1ae52137fed319fdc
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