Impact of Smoking, Benzodiazepine (BZD) Use and Obesity on Severe Obstructive Sleep Apnea (sOSA)

Impact of Smoking, BZD and Obesity on Severe Obstructive Sleep Apnea (sOSA)

In this study the investigators will analyze the influence of smoking, benzodizepine use, and obesity among patients with severe Obstructive Sleep Apnea (sOSA).

This study is a retrospective study. Patients enrolled: all patients with a PSG (polysomnography) between 1st January 2014 and 30th June 2015.

First analysis: influence of smoking, benzodiazepine use, and obesity on the AHI (Apnea Hypopnea Index: the number of apnea and hypopnea per hour of sleep).

Second analysis: only among patients with sOSA: influence of smoking, benzodiazepine use, and obesity on sleep fragmentation and night oximetry.

Inclusion Criteria:

• All patients registered for an overnight PSG at Clinique Saint-Luc of Bouge

Exclusion Criteria:

• None