The Analgesic Effect of Ultrasound-guided Quadratus Lumborum Block After Cesarean Delivery: A Randomized Clinical Trial

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(Anesth Analg. 2018;126:559–565)Ultrasound (US)-guided transversus abdominis plane (TAP) blocks, although widely used for postoperative analgesia in inferior abdominal wall incision surgeries, are known to provide inferior analgesia when compared to neuraxial morphine and other multimodal regimens. A modified quadratus lumborum (QL) block technique, with injection at the posterior border of the QL muscle, may provide better and longer lasting analgesia compared with US-guided anterior TAP blocks. The authors of the present study evaluated the postcesarean analgesic effects of US-guided lateral bilateral QL block with ropivacaine compared with bilateral placebo injections with saline.

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