The effect and safety of dexmedetomidine added to ropivacaine in brachial plexus block: A meta-analysis of randomized controlled trials.

In subgroup analysis, both in groups of greater (RD, 0.01, 95% CI −0.01 to 0.04, I 2 = 0%; P = .25) or less (RD, 0.06, 95% CI −0.02 to 0.12, I 2 = 29%; P = .20) than 50 μg showed a trend of higher risk to obtain hypotension with dexmedetomidine plus ropivacaine treated but without significant difference (Table 2 ). 4.

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