Pharyngeal Sensitivity in Diagnosis Algorithm for Sleep Apnea Syndrome

Inclusion Criteria: * consecutively included patients with suspicion of sleep apnea syndrome * patients who have signed the informed consent form * patients with body mass index less than or equal 30 kg/m2 Exclusion Criteria: * body mass index more than 30 kg/m2 * pharyngeal infection or allergic rhinitis less than 2 weeks before recordings * craniofacial anomalies and/or limited mouth opening and/or teeth position compromising mouthpiece installation and stability during measurement * instable dentures * exaggerated gag reflex preventing pharynx examination * no visibility of the soft palate * systemic or topical anti-inflammatory treatments * treatments that may increase the occurence of nocturnal respiratory events and/or leading to daytime sleepiness and cognitive impairment * cardiac failure, or symptoms suggesting cardiac failure * history of stroke * contraindication for using xylocaine spray * no affiliation to national insurance * patient participating in another research study involving drugs that may interfere with sleep recordings and/or measurement of pharyngeal sensation * patient subjected to exclusion period following participation in another research study