Sleep Apnea - An Overview Sleep Apnea: What is It? Sleep apnea, mainly obstructive sleep apnea (OSA), occurs when your airway blocks during sleep. This obstruction can occur lot of times a night. It interrupts your sleep and cuts off oxygen to your body. The National Institute of Health states https://deviated-septum73838.bloggactif.com/31684932/what-does-deviated-septum-mean