Comparison between caudal bupivacaine and bupivacaine with ketamine for postoperative analgesia in children: A prospective randomized clinical study.

Anesth Essays Res · 2016 · PMC5062222 · PMID 27746538

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highly significantno p-value reported

P < 0.001 which is highly significant, so the duration of analgesia is statistically comparable.

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