A Comparision of Intrathecal Hyperbaric Bupuvacaine With Buprenorphine and Hyperbaric Bupivacaine Alone in Gynaecological Surgeries for Postoperative Analgesia

Abstract

This study was performed at a tertiary care centre after the approval of the Institutional Ethical Committee and obtaining written informed consent from all patients. Sixty ASA I and II, aged 18- 65yrs, bodyweight 45-70kgs scheduled for gynaecological surgeries under spinal anaesthesia were chosen for the study and were divided into two groups named Group B and Group BN each comprising 30 patients. Group B received 3ml of 0.5% hyperbaric bupivacaine with 0.5 ml normal saline and Group BN received 3ml of 0.5% hyperbaric bupivacaine with 0.5ml (150mcg) of buprenorphine. Vital parameters like pulse rate, blood pressure, respiratory rate, SpO2 were recorded at 0 (basal) 15, 30, 45, 90 and 180 minutes. Postoperatively heart rate, blood pressure, respiratory rate and SP02 were monitored at 3 ,6 ,12 and 24 hrs. The mean age, height, weight, duration of surgery were comparable. Time of onset of sensory blockade and motor blockade were noted. The time for rescue medication was 909.0±216.9 min in group BN with a range from 690 min to 1500 min and in group B it was 412.0±89.28 min with a range from 130 min to 195 min. Comparing both groups duration of effective analgesia was significantly higher in group BN with P<0.0001.thus, it can be concluded that addition of buprenorphine as an adjuvant in spinal anaesthesia excellently prolongs duration of analgesia in postoperative period with minimal side effects.