Effect of Subcostal Anterior Quadratus Lumborum Block vs. Oblique Subcostal Transversus Abdominis Plane Block after Laparoscopic Radical Gastrectomy.

Objective: To evaluate the analgesic effect of ultrasound-guided subcostal anterior quadratus lumborum block (QLB) for laparoscopic radical gastrectomy surgery.

Methods: Patients (aged 20-65 years, ASA I - II, and weighing 40-75 kg) scheduled for elective laparoscopic radical gastrectomy were enrolled in the current study. Sixty patients were randomly assigned to two groups by computer-generated randomization codes: an ultrasound-guided oblique subcostal transversus abdominis plane block (TAPB) group (group T, n=30) or an ultrasound-guided subcostal anterior QLB group (group Q, n=30).