AUTHOR=Bey Ayoub , Botti Sophie , Coutier-Marie Laurianne , Bonabel Claude , Metche Stéphanie , Demoulin-Alexikova Silvia , Schweitzer Cyril Etienne , Marchal François , Coffinet Laurent , Ioan Iulia 

TITLE=Bronchial or Laryngeal Obstruction Induced by Exercise?

JOURNAL=Frontiers in Pediatrics

VOLUME=5

YEAR=2017

URL=https://www.frontiersin.org/journals/pediatrics/articles/10.3389/fped.2017.00150

DOI=10.3389/fped.2017.00150

ISSN=2296-2360

ABSTRACT=<p>A child suspected of exercise-induced laryngeal obstruction and asthma is examined by laryngoscopy and respiratory resistance (Rrs) after exercise challenge. Immediately at exercise cessation, the visualized adduction of the larynx in inspiration is reflected in a paroxystic increase in Rrs. While normal breathing has apparently resumed later on during recovery from exercise, the pattern of Rrs in inspiration is observed to reoccur following a deep breath or swallowing. The procedure may thus help diagnosing the site of exercise-induced obstruction when laryngoscopy is not available and identify re-inducers of laryngeal dysfunction.</p>