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Obstructive Lung Diseases: Obstructive Lung Disease Diagnosis and Misdiagnosis |

Residual Volume Reversibility Is a Better Test in Identifying Reversible Airway Disease Compared to FEV1 Reversibility in Patients With Chronic Persistent Asthma

Sasan Sazgar, MD; Ali Rashidian, MD; Belayneh Abejie, MD; Vipul Jain, MD; Jose Vempilly, MD
Author and Funding Information

UCSF Fresno, Division of Pulmonary & Critical Care Medicine, Fresno, CA


Copyright 2016, American College of Chest Physicians. All Rights Reserved.


Chest. 2016;150(4_S):919A. doi:10.1016/j.chest.2016.08.1019
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SESSION TITLE: Obstructive Lung Disease Diagnosis and Misdiagnosis

SESSION TYPE: Original Investigation Slide

PRESENTED ON: Wednesday, October 26, 2016 at 07:30 AM - 08:30 AM

PURPOSE: Documentation of significant FEV1 reversibility as defined by ATS has been the cornerstone for diagnosing reversible airway obstruction in asthma. All drug trials for asthma mandate significant FEV1 reversibility as criteria for recruitment. However, only about 30% of patients with asthma have significant reversible airway disease. Therefore, we explored the utility of performing lung volume reversibility in addition to spirometry testing in patients with persistent asthma.

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