Comparison the effect of bupivacaine plus magnesium sulfate with ropivacaine plus magnesium sulfate infiltration on postoperative pain in patients undergoing lumbar laminectomy with general anesthesia.

Purpose: In this study, we investigated the effect of local injection of ropivacaine and bupivacaine with magnesium sulfate on postoperative pain in vertebral laminectomy surgery.

Design: This randomized double-blind prospective study was conducted among 60 patients aged 18-65 years old with ASA class I and II.

Methods: Group RM: (30 people) received 70 mg ropivacaine (14 ml) plus 1 ml magnesium sulfate (500 mg) volume up to 20 ml with normal saline.