Comparison of Ultrasound-guided Bilateral Anterior Quadratus Lumborum Block at the Lateral Supra-arcuate Ligament with Conventional Epidural Block in Patients Undergoing Laparoscopic Radical Gastrectomy: A Randomized Controlled Study.

Background: To test the novel ultrasound (US)-guided bilateral anterior quadratus lumborum block (QLBA) at the lateral supra-arcuate ligament (supra-LAL) technique combined with postoperative intravenous analgesia was a viable alternative approach of conventional thoracic epidural analgesia (TEA) for laparoscopic radical gastrectomy (LRG).

Methods: Three hundred and four patients scheduled for LRG were randomized 1:1 into QLBA group: receiving a novel pathway of US-guided bilateral QLBA at the supra-LAL before general anesthesia (GA) and patient-controlled intravenous analgesia (PCIA) after surgery, and TEA group: receiving TEA before GA and patient-controlled epidural analgesia following surgery. The difference in procedure time between the treatment groups was set as the primary endpoint.

Efficacy and safety of thoracoscopic-guided multiple paravertebral block for video-assisted thoracoscopic lobectomy surgery: a randomized blinded controlled study.

Background: Paravertebral block (PVB) has been increasingly popular for postoperative analgesia. However, few studies estimated the efficacy and safety of multiple PVB using thoracoscope-assisted technique for intraoperative analgesia and postoperative pain management for video-assisted thoracoscopic lobectomy (VATS LOBECTOMY).

Methods: A total of 120 patients scheduled to undergo VATS LOBECTOMY were randomly assigned into two groups: a placebo group and a PVB group in a ratio of 1:2.