Spinal analgesia for transurethral prostatectomy. Comparison of plain bupivacaine and hyperbaric lignocaine.

Plain 0.5% bupivacaine and hyperbaric 5% lignocaine were compared for spinal analgesia in 100 patients undergoing transurethral prostatectomy (TURP). The time of onset, height of blockade, degree of hypotension, and blood loss were similar in both groups. The duration of blockade was considerably greater in the bupivacaine group, resulting in a significant reduction in the requirement for postoperative analgesia.