2005年Baveno IV工作组讨论了门脉高压静脉曲张出血相关的一些定义和标准、门脉高压治疗的选择、今后研究的方法学要求等,所达成的共识意见和所依赖的证据均用循证医学Oxford系统进行了分级,证据可靠水平从高到低为1-5级,共识建议的可信性从高到低分为A-D4级。1出血相关的几个 2005 Baveno IV Working Group discusses some of the definitions and criteria associated with portal hypertension variceal bleeding, the choice of portal hypertension and the methodological requirements for future studies, and the consensus reached and the evidence relied upon are evidence-based Medical Oxford system was graded, the level of evidence of reliability from high to low for the 1-5 level, the credibility of consensus recommendations from high to low into the A-D4 level. A few bleeding related