I had a major abdominal surgery from a 180 mph head on collision. my abs are still not connected. just a skin graft holds my instestines in, and it sticks out like a basketball. they gave me demerol after the surgeries, and I was in no pain...and both my legs and ankles were broken too. I honestly think that you have nothing to worry about pain-wise. they will take care of you. I wonder why morphine bothers you, but not oxy? they are both opiates. Try to relax before surgery and don't get yourself worked up. adrenaline can make things worse. they will make sure you are comfortable.
I cannot predict whether Demerol will give you the appropriate relief.
With such chronic use of Oxycontin, larger doses of narcotic treatment may be necessary. This needs to be discussed with your surgeon or medicine consultant.
Obtaining a pain management or anesthesia evaluation can be considered to help with your post-op course if pain is an issue.
This issue should be discussed with your personal physician.
Followup with your personal physician is essential.
This answer is not intended as and does not substitute for medical advice - the information presented is for patient education only. Please see your personal physician for further evaluation of your individual case.
Kevin, M.D.
www.kevinmd.com