Comparison of External Oblique Intercostal Plane Block and Subcostal Transversus Abdominis Plane Block for Postoperative Analgesia After Open Radical Gastrectomy: A Single-Blind Randomized Trial

Background

Ultrasound-guided fascial plane blocks are increasingly incorporated into multimodal analgesia for upper abdominal surgery. Although both the external oblique intercostal plane (EOIP) block and the subcostal transversus abdominis plane (scTAP) block have been used for postoperative analgesia, evidence directly comparing their efficacy after open radical gastrectomy is lacking. We compared the postoperative analgesic efficacy of bilateral EOIP and bilateral scTAP blocks in patients undergoing open radical gastrectomy.