EFFICACY OF INTRATHECAL FENTANYL-BUPIVACAINE(H) AND BUPRENORPHINE-BUPIVACAINE(H) ON THE ONSET AND DURATION OF BLOCKADE AND LEVELS OF SEDATION IN LOWER ABDOMINAL SURGERIES –A ONE YEAR HOSPITAL BASED RANDOMIZED CONTROL TRAIL

Abstract

Background : Opioids are been used as adjuncts to Subarachnoid Block since 1979. Neuraxial opioids when added to local anaesthetics hasten the onset of action,prolong the durationiof motoriandisensory blockiandiimprovesiquality ofiperioperative analgesia. But adding these opioids has some adverse effects too - most common among them being sedation.The present prospective randomized study was underataken to compare two opioids –fentanyl and buprenorphine with bupivacaine(hyperbaric) 0.5% in lower abdominal surgeries.