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为确定内窥镜下静脉曲张结扎（EVL）对肝硬化伴食管静脉曲张病人的首发食管静脉曲张出血的预防效果，作者进行了前瞻性随机试验。病人和方法1993年1月～1995年12月期间的126例参加本研究，病人均符合下列标准：既往无上消化道出血史；食管静脉曲张存在着出血的高度危险性；肝硬
To determine the efficacy of endoscopic variceal ligation (EVL) in the prevention of first-episode esophageal variceal bleeding in cirrhotic patients with esophageal varices, we conducted a prospective randomized trial. Patients and Methods 126 patients from January 1993 to December 1995 were enrolled in this study. All patients met the following criteria: history of previous upper gastrointestinal bleeding; high risk of bleeding in esophageal varices; cirrhosis