Ultrasound-guided modified thoracoabdominal nerve block for postoperative analgesia in laparoscopic renal cyst decompression: a randomized double-blind controlled trial.

Background: Laparoscopic renal cyst decompression (LRCD) is a common procedure in urology, but postoperative pain remains a significant challenge. While regional nerve blocks provide more targeted pain relief, there is no universally accepted pain management strategy for LRCD. The ultrasound-guided modified thoracoabdominal nerve block (M-TAPA) may offer effective analgesia by blocking the anterior and lateral branches of the intercostal nerves (T5-T12).