Spinal Anesthesia at the L2-L3 Versus L4-L5 Lumbar Vertebrae With Bupivacaine 0.5% (12.5 mg and 10 mg) Comparing Analgesia and Hemodynamic Stability: A Quasi-experimental Study

We conclude that the L4-L5 interspace is associated with adequate levels of spinal block quality and postoperative analgesia with less frequency of bradycardia and hypotension than the L2-L3 interspace and should be preferred in patients undergoing inguinal hernia surgery under spinal anesthesia.