Peri-anal block for post-operative analgesia in peri-anal surgery under spinal anaesthesia- A prospective randomized placebo-controlled trial.

Patient discomfort is exacerbated by postoperative pain, which increases the length of time spent in the ambulatory care unit. Post-operative pain management may be assisted by non-pharmacological therapies during the perioperative period. The pudendal nerve innervates the urethral muscles, clitoris, penis, and perineum.

Thus, we hypothesise that post-operative peri-anal block with 40 ml of 0.25% bupivacaine and dexmedetomidine (0.5 mg/kg) will provide effective and prolonged post-operative analgesia.