Saudi journal of anaesthesia
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Dexmedetomidine as an adjuvant to local anesthetics in peripheral nerve blocks has been used in only a few studies. ⋯ Dexmedetomidine as an adjuvant to 0.5%ropivacaine in ultrasound guided brachial plexus block shortens the sensory as well as motor block onset time, prolongs sensory and motor block duration and also increases the duration of analgesia. The action of dexmedetomidine most probably is local rather than centrally mediated.