Comparative efficacy of postoperative pain relief between ultrasound guided Transversus abdominis plane block and Ilioinguinal & Iliohypogastric nerve blocks for patients undergoing open inguinal hernia repair under Spinal Anaesthesia.

This study is a Randomized, double blind, parallel group trail comparing the efficacy of postoperative pain relief between ultrasound guided transversus abdominis plane block and ilioinguinal plane & iliohypogastric nerve block in patients undergoing open inguinal hernia repair under spinal anaesthesia. This trial will be conducted in 60 patients with ASA grades I & II in India. The primary outcome is to measure and compare the duration of postoperative analgesia. Secondarily, to compare the quality of pain relief and requirement of rescue analgesia for the first 48 hours post operatively.