The Efficacy of Topical Bupivacaine and Triamcinolone Acetonide Injection in the Relief of Pain After Endoscopic Submucosal Dissection for Gastric Neoplasia: A Randomized Double-blind, Placebo-controlled Trial

All patients undergo endoscopic submucosal dissection. The local injection was performed using 15 ml saline just before the ESD was finished. It was delivered through the endoscopy suite and injected into the cautery ulcer base in aliquots of 1 mL at equal intervals (1 cm apart). The number of injections per patient was dependent on the size of resection.

All patients undergo endoscopic submucosal dissection. The local injection was performed using a mixture of 10 ml bupivacaine (total 50 mg) and 5 ml saline just before the ESD was finished. It was delivered through the endoscopy suite and injected into the cautery ulcer base in aliquots of 1 mL at equal intervals (1 cm apart). The number of injections per patient was dependent on the size of resection.

All patients undergo endoscopic submucosal dissection. The local injection was performed using a mixture of 10ml bupivacaine (total 50 mg) and 5 ml triamcinolone acetonide (total 50 mg) just before the ESD was finished. It was delivered through the endoscopy suite and injected into the cautery ulcer base in aliquots of 1 mL at equal intervals (1 cm apart). The number of injections per patient was dependent on the size of resection.