Intrathecal fentanyl added to lidocaine for Cesarean delivery under spinal anesthesia--a randomised clinical trial.

The addition of opioids to local anesthetics improves the analgesic potency of spinal analgesia. The purpose of this study was to evaluate the efficacy and safety of intrathecal fentanyl 15 microg when added to lidocaine 80 mg in patients undergoing Cesarean section under spinal anesthesia. Forty healthy parturients scheduled for elective Cesarean section using 80 mg of 5% lidocaine were randomly allocated to additionally 0.