Comparison between Intrathecal Isobaric Bupivacaine 0.5% with Isobaric Ropivacaine 0.75% for Lower Limb Orthopaedic Surgeries: A Double Blind Randomized Controlled Study
Journal Title: International Journal of Contemporary Medical Research - Year 2017, Vol 4, Issue 4
Abstract
Introduction: Spinal anaesthesia is probably the most widely used regional anaesthetic procedure in routine clinical anaesthesiology practice. It provides rapid onset, consistent sensory blockade and adequate muscle relaxation for all types of surgery below the level of umblicus. The present study compared effects of plain Ropivacaine 0.75% and plain Bupivacaine 0.5% on duration of sensory and motor block for lower limb orthopaedic surgery. Material and methods: A randomized double blind prospective controlled study involving 100 patients aged 20-50 years of ASA I and II scheduled for receiving subarachanoid block for lower limb orthopaedic surgery was conducted. The patients were divided into two groups of 50 each. Group I was given 3ml, 0.5% isobaric bupivacaine (15mg) and Group II was given 3ml, 0.75% isobaric ropivacaine (22.5mg). In this study we assessed three parameters, namely- onset time, sensory regression and motor blockade, intraoperative haemodynamic parameters and complications. Result between two groups were compared using unpaird t-test. P-value ˂0.05 was considered significant. Results: The duration of sensory blockade was longer and duration of motor blockade was shorter with 0.75% ropivacaine as compared to 0.5% bupivacaine. Also the 0.75% ropivacaine provide more haemodynamic stability as compared to 0.5% bupivacaine. Conclusion: Ropivacaine 0.75% via subarachanoid block for lower limb orthopaedic surgery provides lesser duration of motor blockade while providing adequate surgical analgesia and better haemodynamic stability in short duration day care surgery.
Authors and Affiliations
Reetu Verma, Shikha Mehrotra
Keywords
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