Chest 2020 06 23;157(6):1435-1441. Epub 2020 Jan 23.
Department of Respiratory Medicine, Concord Repatriation General Hospital, Concord, NSW, Australia; Woolcock Emphysema Centre and Airway Physiology and Imaging Group, Woolcock Institute of Medical Research, Glebe, NSW, Australia; Faculty of Medicine and Health, University of Sydney, Sydney, NSW, Australia; Faculty of Medicine and Health Sciences, Macquarie University, North Ryde, NSW, Australia.
Background: Persistent bronchodilator response (BDR) following diagnosis of asthma is an underrecognized treatable trait, associated with worse lung function and asthma control. The forced oscillation technique (FOT) measures respiratory system impedance, and BDR cutoffs have been proposed for healthy adults; however, the relevance in asthma is unknown. We compared BDR cutoffs, using FOT and spirometry, in asthma and the relationship with asthma control. Read More