Endoscopy Clinical Trials

The purpose of this clinical trial is to evaluate whether Endoscopic Ultrasound-Guided Selective Variceal Devascularization (EUS-SVD) is effective in preventing the re-bleeding of gastric varices. It will also investigate the safety of EUS-SVD. The main questions it aims to answer are: Does EUS-SVD lead to a greater reduction in the one-year gastric variceal re-bleeding rate among participants compared to conventional Endoscopic Gastric Variceal Obturation (GVO)? What medical problems (adverse events) do participants experience when receiving EUS-SVD treatment? Researchers will compare EUS-SVD with GVO (a currently commonly used first-line treatment method) to see if EUS-SVD can be a superior option for treating gastric varices. Participants will: Be randomly assigned to undergo either the EUS-SVD or the GVO procedure. Receive treatment in the hospital and be hospitalized for observation (approximately 5 days for the EUS-SVD group, 3 days for the GVO group). Return to the hospital for a follow-up gastroscopy or endoscopic ultrasound examination at 3 months after the procedure. Receive telephone or outpatient follow-ups at 6 months and 12 months after the procedure to report their health status and any bleeding episodes. Throughout the study period, record and report any re-bleeding events, need for re-intervention, and other complications.