Good luck on your upcoming surgery! CPAP? I've been using one for years, can't wait to get rid of it, but alas, not yet. I tool mine to the hospital and it was most appreciated. If you do use your cpap, you will go into the cardiac care unit post op, usual procedure, in order to watch your breathing, and then off you go to your room. The only problem I had was with the NG tubes, they did not allow a good seal to form with the cpap mask, but it was ok, just bothersome, until they took out the ng tubes. You'll do fine! In fact, I don't remember a thing about the surgery. There was some 'discomfort' after, but mainly from the incision site, and a small pillow held over it when you cough or sneeze, or walk around helps that along. You'll be on the losing side before your know it! Keep us posted on your progress! It is one amazing ride!