I have been taking 80mg oxycodone twice a day for over 8 years was hurt at work and was to have surgery on my shoulder for a torn rotater cuff all was a go untill they found out about the oxys was to be done at a private surgery Centre they are saying it's a combination of my BP. Sleep apnea and the anesthesiologist is refusing. I really need this surgery how long do you think it will take to be clear of the narcotics