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目的探讨提高冠状动脉造影中心肌桥检出率及临床意义。方法在冠状动脉造影中采用多体位投照,对可疑者经冠状动脉内注射硝酸甘油200μg后复查造影,对检出有冠状动脉心肌桥患者的临床资料进行分析。结果460例行冠状动脉造影的患者中检出心肌桥38例,检出率8.2%。其中37例为左前降支,1例为右冠状动脉后降支。38例中,肌桥近段冠状动脉管壁不规则提示有粥样硬化表现者21例(55.6%)。结论冠状动脉造影可以提高冠状动脉心肌桥的检出率;心肌桥绝大部分位于左前降支,其近段冠状动脉易发生粥样硬化;心肌桥所致的冠状动脉狭窄,可致心肌缺血,引起心绞痛、心肌梗死甚至猝死。
Objective To investigate the detection rate and clinical significance of myocardial bridge in coronary angiography. Methods In coronary angiography with multi-body projection, the suspected person after intracoronary injection of 200μg of nitroglycerin after angiography, the detection of patients with coronary myocardial bridge clinical data were analyzed. Results Of the 460 patients undergoing coronary angiography, 38 were detected in the myocardial bridge with a detection rate of 8.2%. Among them, 37 cases were left anterior descending artery and 1 case was descending branch of right coronary artery. Among the 38 cases, 21 cases (55.6%) had atherosclerotic wall irregularities in the proximal muscular bridge. Conclusions Coronary angiography can improve the detection rate of myocardial bridge of coronary artery. Most of myocardial bridge lie in left anterior descending branch, and the proximal coronary artery is prone to cause atherosclerosis. Coronary artery stenosis caused by myocardial bridge can cause myocardial ischemia , Cause angina, myocardial infarction or even sudden death.