1. Copyright © 2017 American Academy of Pediatrics.
From: Wheezing
American Academy of Pediatrics Textbook of Pediatric Care, 2nd Edition, 2017
Figure Legend:
Pulmonary function test demonstrating large airway fixed obstruction. Fixed obstruction of a large airway by compression or stenosis will result in a characteristic flat expiratory loop on spirometry. No change will occur after administering bronchodilator.
Date of download: 12/29/2017
Copyright © 2017 American Academy of Pediatrics.
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