Hyperbaric 0.5% Bupivacain used in subarachnoid block which spread of anesthesia to cephalic at the different site of injection specially L 2-3, L 3-4, L 4-5 inter vertebral space. TAJ: J of Teachers Assoc. 2018;28(1):1-5. doi:10.3329/taj.v28i1.39039