<prompt> Sleep apnea is defined as a temporary pause in breathing during sleep lasting at least?40 seconds30 seconds20 seconds10 seconds  <response>: Apneas in OSA are defined in adults as breathing pauses lasting 10 s assosciated with 3 decrease SaO2 Hypopneas is defined as 30 decrease in airflow for 10 sec associated with 3 decrease in SaO2. 