Didgeridoo Treatment to Improve Pharyngeal Compliance in Obstructive Sleep Apnea-hypopnea Syndrome in Children

Randomised controlled trial, with minimisation criteria, single blind, bicentric. The subjects will be divided into 2 groups, according to the strategy of care before the date of the scheduled surgery: 1. Abstention (routine care) 2. Didgeridoo rehabilitation. The primary objective is to improve pharyngeal compliance measured non-invasively by acoustic pharyngometry in the didgeridoo arm compared to a no treatment arm. The secondary objectives are to demonstrate the effect of the didgeridoo on clinical signs associated with Obstructive Sleep Apnoea Syndrome and on an indirect index of apnea-hypopnea during sleep.