Gastric Variceal Ligation Versus Gastric Variceal Obturation for Secondary Prophylaxis of Gastric Varices

Gastric varices (GVs) is a common complication of portal hypertension, with an incidence of 20%. Though the bleeding rate of GVs (25%) is lower than that of Esophageal varices (EVs), the mortality rate is higher due to greater GVs rupture and less space for endoscopic intervention. In addition, in 30% of patients with GVs, the possibility of treatment failure exists. Guidelines differ on endoscopic treatment for secondary prevention of GVs.Current studies suggest that EVL, due to its low incidence of complications, is suitable for GOV1, while it is still controversial for the treatment of gastric varices. Compared with glue, the advantage of ligation is that it can avoid serious complications caused by glue injection, such as ectopic embolization, large ulcer and sepsis. As there are few studies comparing GVL and GVO in secondary prevention of gastric varices, the treatment methods are different, and the treatment effect is controversial. In addition, the choice of treatment for different types of GVs needs further study. The investigators establish a randomized controlled clinical trial, comparing the efficacy and prognosis of GVL and GVO in secondary prevention of GVs, especially in patients with portosystemic shunting, and exploring the endoscopic treatment selection of different types of GVs. Outcome expectations: Compared with glue injection, endoscopic ligation for secondary prevention of gastric varices is safe and effective, especially in patients with portosystemic shunting.