Effect of Midazolam and Dexmedetomidine Sedation on the Onset and Duration of Supraclavicular Brachial Plexus Block: A Randomised Comparative Study

Intravenous dexmedetomidine in combination with 25 mL of bupivacaine (0.5%) accelerated the onset of sensory and motor block and prolonged the duration of sensory and motor block when used for brachial plexus block, without resulting in any adverse events.