The Analgesic Effect of Quadratus Lumborum Block and Its Postoperative Implication on Kidney Function

Quadratus Lumborum (QL) block is a new technique for analgesia of the abdominal wall muscles. Its mechanism depends on the injection of the local anesthetic agent between the abdominal wall muscles into the thoracolumbar fascia surrounding the Quadratus Lumborum muscle by ultrasound (US) guided technique.

Epidural analgesia is a gold standard analgesic technique for the majority of abdominal surgeries, yet it has some limitations in some surgeries as colorectal surgeries due to delayed ambulation due to muscular weakness and postural hypotension.