冠状动脉心肌桥与缺血性心脏病的关系──附19例报告

The relationship between coronary myocardial bridge and ischemic heart disease.

目的:探讨冠状动脉心肌桥与缺血性心脏病(IHD)的关系。方法:对用常规方法行选择性冠状动脉造影检出的19例冠状动脉心肌桥的患者临床资料进行回顾性分析。结果:2018例中共检出冠状动脉心肌桥19例,发生率为0.94%。19例中有16例符合IHD的临床诊断标准;其中心肌桥段冠状动脉收缩期狭窄百分比(PSN)等于或大于75%者的心肌桥近段冠状动脉粥样硬化的发生比例(11/13)和严重程度0～3(2)均大于PSN小于75%者1/6和1～0(2),<0.05。结论:冠状动脉心肌桥可导致缺血性心脏病,心肌桥近段冠状动脉粥样硬化的发生可能与肌桥段冠状动脉收缩期狭窄的程度有关。

Objective:To investigate the relationship between coronary myocardial bridge(MB)and ischemic heart disease(IHD).Methods:Coronary angiography was performed using Judkin's method,and19patients with MB were analyzed retrospectively.Results:Among2018patients underwent coronary angiography,19had MB over coronary arteries,and the overall prevalence of MB was0.94%.Sixteen of the19patients were in accordance with the diagnostic criteria of IHD.The proportion(11/13vs1/6)and severity [0～3(2)vs1～0(2) ]of coronary atherosclerosis of the prox imal segment of MB were significant different between patients with the percentage of systolic narrowing (PSN)≥75%and those with PSN<75%.Con clu sion:Coronary myocardial bridge may result in ischemic heart disease.The pathogenesis of coronary atherosclerosis in the proximal segment of MB may be associated with the ex-tent of systolic narrowing of the artery segment beneath MB.