Buprenorphine versus morphine. A comparison of intra-operative and postoperative analgesia.

A randomised double-blind trial comparing morphine and buprenorphine and postoperative analgesia combined with droperidol was conducted in 60 patients. Compared with morphine, taken as the standard analgesic, buprenorphine was shown to be a satisfactory analgesic for major surgery, with no difference in the incidence of unwanted effects.