Efficiency and Safety of Prophylactic Use of Antibiotics in Endoscopic Injection of Tissue Adhesive in Gastric Varices

At present, there is still a controversy about the application of antibiotics in the treatment of patients with non acute hemorrhage of esophageal varices. This study is a randomized controlled trial. Patients randomly enter two treatment groups: 1. the prophylactic use of antibiotics group and 2. the non-prophylactic use of antibiotics group Treatment allocation is by block randomization with an equal number for both groups. The incidence of infection after endoscopic treatment will be analyzed.