Best wishes on your upcoming surgery. I also had sleep apnea pre surgery. My dr said it was the worst case he had ever seen. I stopped breathing 800 times an hour. I got a cpap machine and used it for about 3 mos before surgery. I am 3 mos post op, have lost 133 lbs and no longer require my cpap. Please click on my name below and read my profile. Check your email too, my wife and I sent you a special message.