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目的探讨冠状动脉前降支心肌桥与急性前壁心肌梗死发病的相关性。方法 120例冠状动脉造影提示左冠状动脉前降支为罪犯血管所引起的急性前壁ST段抬高型心肌梗死患者作为观察组,另选取同期120例冠状动脉造影正常的患者作为对照组。对比两组患者的心肌桥出现几率与心肌桥参数。结果心肌桥均位于左冠状动脉前降支,观察组心肌桥出现率为18.33%,对照组心肌桥出现率为4.17%,两组间心肌桥出现率差异具有统计学意义(P<0.05)。两组患者中出现心肌桥患者的年龄、心肌桥长度、与前降支开口距离及收缩期管腔压缩比例接近,差异无统计学意义(P>0.05)。结论冠状动脉前降支心肌桥是引起患者急性前壁心肌梗死发病的重要危险因素。
Objective To investigate the relationship between the myocardial bridge of the anterior descending coronary artery and the incidence of acute anterior myocardial infarction. Methods 120 cases of coronary angiography prompted the left anterior descending coronary artery as the culprit artery in patients with acute anterior wall ST-segment elevation myocardial infarction as the observation group, and the other 120 cases of normal coronary angiography were selected as the control group. The incidence of myocardial bridge and the parameters of myocardial bridge were compared between the two groups. Results Myocardial bridges were located in the anterior descending branch of left anterior descending coronary artery. The incidence of myocardial bridge was 18.33% in the observation group and 4.17% in the control group. The difference of myocardial bridge between the two groups was statistically significant (P <0.05). The age, myocardial bridge length, distance from the anterior descending artery and systolic lumen compression ratio in patients with myocardial bridge were similar in the two groups, with no significant difference (P> 0.05). Conclusion The anterior descending coronary artery bridge is an important risk factor for the pathogenesis of acute anterior myocardial infarction.