“…In regard to the type of brachial plexus block used, a total of 10 studies utilized a supraclavicular block, 4,15,18,19,[22][23][24][25]27,30 3 used an axillary block, 20,26,29 3 used an interscalene block, 14,17,21 and 2 used an infraclavicular block. 16,28 Dexmedetomidine was used as an adjuvant to several different local anesthetics, which included levobupivacaine, 17,18,20,25,28 ropivacaine, 14,19,21,23,24,27,29,30 bupivacaine, 4,15,16,22 and mepivacaine. 28 Across the studies, the dose of dexmedetomidine ranged from 0.5 μg/kg to a total of 150 μg.…”