A RANDOMIZED CONTROL STUDY TO EVALUATE EFFICACY OF MAGNESIUM SULPHATE AS AN ADDITIVE TO ROPIVACAINE IN SUPRACLAVICULAR BRACHIAL PLEXUS BLOCK
European Journal of Molecular & Clinical Medicine,
2022, Volume 9, Issue 4, Pages 2184-2191
Ropivacaine is an aminoamide local anaesthetic that is less cardiac and central nervous system (CNS) toxic than other long acting local anaesthetics like bupivacaine. Local anaesthetics alone for supraclavicular brachial plexus block provide good operative conditions but have shorter duration of postoperative analgesia.
MATERIAL AND METHODS
This prospective study was conducted in the Department of Anaesthesia at KD Medical College, Hospital and Research from November 2021to April 2022.After obtaining permission from institutional ethics committee, written informed consent was taken from the participants. Eighty adult patients were randomly allocated to two equal groups (n = 40 in each group) using computer-generated random number list.Patients with the American Society of Anaesthesiologists (ASA) physical status I and II, aged between 25 and 55 years of both sexes undergoing elective orthopaedic surgeries of elbow, forearm, and hand under supraclavicular brachial plexus block were enrolled in the study. The onset and duration of sensory and motor block, the perioperative vitals and requirement of post operative rescue analgesic were compared by us.
In group A 50% of patients achieved grade IV quality of block in comparison to 45% in group B which was not significant (p>0.05). 31 patients required rescue analgesic (intramuscular diclofenac sodium injection) in group A compared to 27 patients in group B.
We conclude that addition of 150 mg magnesium sulphate to ropivacaine 0.50% solution in supraclavicular brachial plexus block prolongs the duration of sensory and motor blockade and reduces the requirement of rescue analgesic in postoperative period with no significant adverse effects.
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