Abstract

A COMPARATIVE STUDY OF SUBARACHNOID BLOCK CHARACTERISTICS USING ISOBARIC SOLUTIONS OF LEVOBUPIVACAINE AND ROPIVACAINE IN ELECTIVE INFRAUMBILICAL SURGERY

Dr. Neeta Basak, Dr. Saikat Majumdar*, Dr. Tusar Kanti Saha and Prof. Dipankar Mukherjee

Abstract

Aims and Objectives- The aims of this study is to find out the efficacy of Levobupivacaine and Ropivacaine for the patients undergoing infraumbilical surgery under spinal anaesthesia. Material and Methodology-This prospective randomized double blind open labeled parallel group study was conducted in 90 patients aged 18-60years, either sex, ASA grade I-II, scheduled for infraumbilical surgery under spinal anaesthesia. The patients either received received isobaric 0.5% Ropivacaine 3.5 ml (17.5mg) (Group A, n=45) or isobaric 0.5% Levobupivacaine 3.5 ml (17.5mg) (Group B, n=45). Results - Significant early onset time for sensory block at T10 (6.22±3.62 min vs 6.66±2.32min) and onset to reach peak sensory block height (20.02±4.56min vs 28.37±2.65min) in Group-B. Duration of sensory block (204.22 ±37.16min vs 157.95 ±36.90min) and two segment regression time (173.46±31.18min vs99.57±18.90min) also more in Group-B. Higher peak block height (T3 vs T4) and faster time to achieve Bromage score of 3 was found in group B (p< 0.05). Ropivacaine showed significantly shorter duration of sensory block (158 ± 37 min). Conclusion- Intrathecal isobaric Levobupivacaine produced early onset and prolonged duration of both sensory and motor block, early reach of peak block height, prolonged two dermatome regression time and also causes less side effects than isobaric ropivacaine of equal dose.

Keywords: Levobupivacaine, ropivacaine, isobaric, motor, sensory, block.