Aftab Imtiaz.
Comparision of butorphanol and pethidine an operative analgesia.
J Surg Pak Jan ;7(4):31-3.

This double blind randomized study was conducted in forty ASA I and ASA II patients age 20 to 60 years, scheduled for total abdominal hysterectomy. Butorphanol 20 micrograms /Kilogram proved to be an adequate analgesic supplement to nitrous, oxygen and relaxant anaesthesia with 0.5% halothane, for total abdominal hysterectomy surgery in majority of the patients. The patients remained stable intraoperatively; excessive cardiovascular responses to surgical stimuli were sufficiently suppressed and the technique provided satisfactory analgesia in the postoperative period. Recovery of consciousness and spontaneous ventilation presented no problems and the incidence of side effects was no different from pethidine.

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