To Determine the Effectiveness of Saddle Block vs Spinal Anesthesia in TURP

In both groups 0.5% Hyperbaric Bupivacaine is given intrathecally and then saddle group is advised to stay in sitting position for next 5minutes so that drug can block only lower segments of nerves, Lumber 5th to Sacral dermatomes level. The spinal group is advised to take supine position immediately so that drug distribution be uniform uptill T10 level of spinal dermatome. Then outcomes regarding haemodynamic status and vasopressor usage are recorded