Comparison of the Efficacy of 0.5% Bupivacaine, 0.5% Levobupivacaine, and 0.5% Hyperbaric Bupivacaine

"The anesthesiologist, who was not involved in the study, prepared the anesthetic solution immediately before the injection.~Intrathecal injections were performed with a 24G or 25G Pencil point needle in the L3-L4 interval. Spinal puncture was performed while the patient was sitting on the table. Then the patient was placed on his back."