Objective:To probe into the value of respiratory impair time index (RIT )in evaluation of obstructive sleep apnea hypopnea syndrome(OSAHS). Methods:Polysomnographies of 98 cases with OSAHS were retrospectively analyzed.

• 目的:研究睡眠呼吸紊乱时间指数(respiratory impair time index,RIT)在阻塞性睡眠呼吸暂停低通气综合征(obstructive sleep apnea hypopnea syndrome,OSAHS)患者病情评估中的作用。