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在急性心肌梗塞时,心室内传导阻滞的发生率为8～24％,最常见的是左前半支阻滞。作者在605例症状性冠状动脉疾病患者中,发现42例伴有心室内传导阻滞,占7％。本文分析此42例的临床、血液动力学及心血管造影检查结果。结果:(1)右束支阻滞:共6例,均为心绞痛,其中5例有心肌梗塞史,但仅1例心电图示有穿壁性心肌梗塞的表现。心脏指数、左室舒张末期容量和喷血比数均属正常,说明左心室功能都正常。左前降支均有阻塞,大部分是具有三支主要冠状动脉病变(平均
In acute myocardial infarction, the incidence of ventricular conduction block was 8 to 24%, the most common is the left anterior half block. Of 605 patients with symptomatic coronary artery disease, 42 were found to have ventricular block, accounting for 7%. This article analyzes the 42 cases of clinical, hemodynamic and cardiovascular angiography results. Results: (1) Right bundle branch block: a total of 6 cases were angina pectoris, of which 5 cases had a history of myocardial infarction, but only 1 case of electrocardiogram showed transmural myocardial infarction. Cardiac index, left ventricular end-diastolic volume and ejection ratio are normal, indicating normal left ventricular function. Left anterior descending coronary artery occlusion, most of them have three major coronary lesions (mean