COMPARATIVE STUDY OF HYPERBARIC LEVOBUPIVACAINE O.5% AND HYPERBARIC ROPIVACAINE 0.75 % IN SPINAL ANAESTHESIA IN PATIENTS UNDERGOING LOWER LIMB ORTHOPEDIC SURGERIES

This will be a hospital based prospective, randomised, double blind study conducted to compare the duration of analgesia, onset and duration of sensory and motor block and side effects of Hyperbaric Levobupivacaine 0.5% and hyperbaric ropivacaine 0.75% in patients undergoing Lowerlimb orthopaedic surgery. For this study Adult population between 20 years to 60 years of age group with ASA grade 1 and 2 with exemption of all exclusion criteria mentioned above and undergoing Lowerlimb orthopaedic surgery. Primary objective of the study is to assess the duration of analgesia. The secondary objective of the study is to assess the onset and duration of sensory block, onset and duration of motor block, haemodynamic parameters and its side effects. Participants are allocated into two different groups, each with 50 number sample size. Group R will receive 0.75% Hyperbaric ropivacaine 3ml intrathecally and group L will receive 0.5% Hyperbaric Levobupivacaine 3ml intrathecally.Preanaesthetic evaluation will be done on the day before surgery. Informed written consent obtained before procedure.Patients will be monitored intra operatively and post operatively upto 24 hours at pre described time intervals and documented. Data will be analysed statistically using standard quantitative and qualitative tests