Comparison of Meperidine and Sufentanil Added to 0.5% Hyperbaric Bupivacaine for Spinal Anesthesia in Cesarean Section

Subarachnoid block is a widely used anesthetic technique for cesarean section. To improve the quality of analgesia and prolong its duration, the addition of intrathecal opioids to local anesthetics has been encouraged. In a double blind randomized controlled trial, 60 parturient women ASA 2-3 scheduled for elective cesarean delivery under spinal anesthesia will be randomly divided into 2 groups: Group 1 will receive sufentanil 5 μg and Group 2 will receive meperidine 12.5 mg. In every group, 0.5% heavy bupivacaine 10 will be added.