Abstract

An effective Brachial plexus block provides a useful alternative to General anaesthesia for upper limb surgery producing complete muscle relaxation. It provides surgical anaesthesia in upper extremity surgery, postoperative analgesia and chronic pain management. Brachial plexus block also maintains stable intraoperative hemodynamics and associated sympathetic block. The sympathetic block decreases postoperative pain, vasospasm and edema. Patients were randomized into two equal groups of 30 each. Group B-receive Inj Bupivacaine (0.5%) 20ml + Inj Lignocaine (2%) 10ml with Inj Adrenaline (1:2,00,000). Group BM- receive Inj Bupivacaine (0.5%) 20ml + Inj Lignocaine (2%) 10ml with Inj Adrenaline (1:2,00,000) + Inj Midazolam 50 microgm/kg. Onset and duration of sensory and motor blockade, post operative pain and hemodynamic variables were compared. The onset and duration of sensory block in Group B and Group BM were significantly different. The onset of both sensory and motor block was significantly less, and duration was significantly higher in the BM group compared to Group B (p<0.05). In the post-operative period, more patients in group B demanded rescue analgesia as compared to group BM. (p<0.001).

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