''Sleep apnoea '' is defined as a temporary pause in breathing during sleep lasting at least-
40 seconds
30 seconds
20 seconds
10 seconds
Sleep OSAHS also may be diagnosed in the absence of symptoms if the AHI is above 15. Each episode of apnea or hypopnea represents a reduction in breathing for at least 10 sec Ref Harrison 19th edition pg 1723
Respiratory system