Anterior quadratus lumborum blocks for postoperative pain treatment following intra‐abdominal surgery: A systematic review with meta‐analyses and trial sequential analyses

Background The anterior quadratus lumborum (QL) block may be used for postoperative pain management for intra‐abdominal surgeries, but the evidence is uncertain. We aimed to investigate the benefit and harm of the anterior QL block compared to placebo/no block for intra‐abdominal surgery. Methods We...

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