SESSION TITLE: Sleep Disorders II
SESSION TYPE: Original Investigation Poster
PRESENTED ON: Saturday, April 16, 2016 at 11:45 AM - 12:45 PM
PURPOSE: Obstructive sleep apnea hypopnea syndrome (OSAHS) is a chronic sleep respiratory disease with nocturnal hypoxemia and continuous hypercapnia. The key determinants of hypercapnia in OSAHS are unclear.
METHODS: 70 OSAHS patients were measured by overnight polysomnography (PSG), Epworth Sleepiness Scale (ESS), carbon dioxide monitoring in end-tidal (PETCO2Q) and prolonged expiration (more than 5 seconds) (PETCO2P) at bedtime and in the morning. These patients were divided equally into 4 groups according to PSG results: control group with an apnea-hypopnea index (AHI) <5 (n=17), mild group (5 ≤ AHI <15) (n=17), moderate group (15 ≤ AHI <30) (n=18) and severe group (AHI ≥30) (n=18).