Bilateral Ultrasound-Guided Intra Muscular Quadratus Lumborum Block Versus Trans Muscular Quadratus Lumborum Block for Peri-Operative Analgesia in Abdominal Surgeries in Pediatric Patients. A Comparative Controlled Randomized Study.

A 22 G echogenic needle will be inserted in plane from the posterior (medial) end of the probe and directed for the fascial plane between the Quadratus Lumborum and the Psoa Major muscles through the Quadratus Lumborum muscle. Once the needle is confirmed in correct location, 1 mL of saline will be injected after negative aspiration. Then 0.5 mL/Kg of bupivacaine 0.25% will be injected. The spread of the injectate should be observed to distribute within this plane. This technique will be repeated to the other side.

A 22 G echogenic needle will be inserted in plane from ventral (lateral) edge of the probe and advanced until penetration of QL muscle fascia is observed. Once the needle is confirmed in correct location, 1 mL of saline will be injected after negative aspiration. Then 0.5 mL/Kg of bupivacaine 0.25% will be injected. The spread of the injectate should be observed to distribute within this plane. This technique will be repeated to the other side.

Conventional analgesia