A prospective randomized double-blind trial of the use of intrathecal fentanyl in patients undergoing lumbar spinal surgery.

Study Design: A randomized, double-blind controlled study.

Objective: To assess the efficacy and safety of intrathecal fentanyl in the relief of postoperative pain in patients undergoing lumbar spinal surgery.

Summary Of Background Data: Fentanyl has been used as a spinal analgesic in surgery and obstetrics with several studies promoting its efficacy and safety.