An optimal dose study of intrathecal morphine in gynecological patients.

Background And Objectives: Post-operative pain after gynecological surgery can be controlled by intrathecal administration of opioids and local anesthetics. Effective intrathecal analgesia can be achieved from low dose narcotics with less adverse effects, prolonged duration and reduced narcotics requirement. Therefore, we undertook a prospective randomized study to find out optimal dose of intrathecal morphine for long lasting post-operative analgesia with less adverse effect in this group of patients.