Exercise-induced Laryngeal Obstruction

Abstract

Exercise-induced laryngeal obstruction (EILO) is a common cause of exertional dyspnoea occurring at maximal exertion in individuals with normal laryngeal morphology and function at rest. It is most frequent in adolescent females and in sports with high ventilation demands. The obstruction results from the adduction of laryngeal structures during inhalation, occurring either at the level of the glottis with paradoxical vocal fold movement, or more commonly with supraglottic adduction and inward prolapse of aryepiglottic folds and surrounding structures. It is often mistaken for asthma-related dyspnoea.

Keywords

• exercise-induced laryngeal obstruction
• exertional dyspnoea
• exercise-induced bronchoconstriction
• continuous laryngoscopy during exercise