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Updated: Jun 16, 2026

Minimally Invasive Murine Laryngoscopy for Close-Up Imaging of Laryngeal Motion During Breathing and Swallowing
Published on: December 1, 2023
Vocal cord dysfunction, paradoxic vocal fold motion, or laryngomalacia? Our understanding requires an
Kent L Christopher1, Michael J Morris
1Department of Medicine, University of Colorado Health Sciences Center, Denver, CO 80231, USA. drkchristopher@comcast.net
Abstract:
This article presents disorders of periodic occurrence of laryngeal obstruction (POLO) resulting in noisy breathing and dyspnea and a variety of secondary symptoms. Included in this classification are glottic disorders, such as paradoxic vocal fold movement and vocal cord dysfunction. The supraglottic disorder, termed, intermittent arytenoid region prolapse or laryngomalacia, is also reviewed. Three categories of POLO are defined as irritant, exertional, and psychological.
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