根据冠状动脉分支参考直径和病变对称性评价分叉病变的价值研究

目的探讨具有介入操作指导意义的冠状动脉分叉病变分型方法。方法根据冠状动脉分支参考直径和病变对称性对分叉病变进行分型,并在此基础上设计介入治疗原则。(1)首先根据分支参考直径将分叉病变分为分支对等型和分支优势型。(2)然后根据分叉处病变是否对称分为对称型和非对称型两个亚类。(3)对于分支优势型非对称分叉病变再根据病变部位分为A、B两个亚型。(4)对等对称型分叉病变原则上采用双支架术,全部对吻扩张;其他类型原则上采用单支架术,非支架分支开口70%残余狭窄者对吻扩张。结果按照新分型法的使用时间将连续300例老年冠心病分叉病变分为传统分型组(Lefevre组)和新分型组(ERDALS组)各150例,两组手术成功率都是100%,与Lefevre组相比,分叉病变支架使用率(1.2%比1.5%)、双支架率(23.3%比52%)、操作时间(15.3min比21.6min)和随访心脏事件率(1.3%比3.3%)明显优于Lefevre组(P0.05)。结论按照分支参考直径和病变对称性设计分叉病变分型法具有简便、直观、系统和操作性强的优点,对临床介入治疗具有指导意义。

Evaluation of coronary bifurcational lesions by the lesion symmetry and referred diameter of branches

Objective The purpose of the study is to establish a novel classification criterion for coronary bifurcational lesions.Methods The coronary bifurcational lesions were classified according to the lesion symmetry and the referred diameter of branches.Based on this classification,the intervention principle was then designed.First,the bifurcational lesions were divided into the dominant and the equivalent branch based on the referred diameter of the branches.Second,the bifurcational lesions were divided into th...