Sleep apnea 2009-09-21T08:53:35Z HP:0010535 SNOMEDCT_US:73430006 UMLS:C0037315 An intermittent cessation of airflow at the mouth and nose during sleep is known as sleep apnea. Apneas that last at least 10 seconds are considered significant, but individuals with sleep apnea may experience apneas lasting from 20 seconds up to 2 or 3 minutes. Patients may have up to 15 events per hour of sleep. Sleep apnoea Sleep apnea Pauses in breathing while sleeping Sleep-related breathing disorders