Sleep apnea syndrome is defined as repeated episodes of cessation of airflow with sleep, often defined with a respiratory disturbance incidence (RDI) being greater than 5 or 10.

• 睡眠呼吸暂停综合征被定义为睡眠时反复发生气流断绝，经常被定义为大于5或10的呼吸障碍（RDI）。