I too have sleep apnia and woke up in the middle of the night unable to breathe until I would hang my head over the side of the bed and breathe slowly until I could breathe normally. This occured everynight so bad that I was afraid to go to sleep at all, which only complicated the fatigue. Then my doctor prescribed two and one half litres of oxygen from an oxygen generating machine for every night useage. Since then the apnia has left and I sleep comfortably. It's worth a try. Best of luck. Daniel.