Observational study of laryngoscopy plus flow-volume loops during exercise.

Observational study of laryngoscopy plus flow-volume loops during exercise.

Clin Case Rep. 2018 Apr;6(4):735-740

Authors: Pianosi PT, Orbelo DM, Cofer SA

Abstract
Laryngoscopy is the gold standard to diagnose exercise-induced laryngeal obstruction, though inspiratory flow-volume loop may provide a clue. We combined tidal flow-volume loop analysis plus laryngoscopy during exercise and found that cigar-shaped - not flattened - inspiratory loops are associated with obstruction. Pursed-lip breathing slows inhalation thereby reducing vocal fold adduction.

PMID: 29636950 [PubMed]

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