Predictive value of the angiographic anatomic characteristics of the left main coronary on acute myocardial infarction in patients with coronary atherosclerosis.

医学 心脏病学 内科学 心肌梗塞 冠状动脉疾病 动脉 扬抑 狭窄 右冠状动脉 闭塞 冠状动脉造影
作者
Zhifeng Dong,Kaizheng Gong,Ping Xin,Yuan Shen,Penglong Wu,Wei Zhu,Hao Zhang,Wei Meng
出处
期刊:PubMed 卷期号:25 (9): 449-54 被引量:1
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摘要

The coronary artery anatomic morphology is a critical determining factor for intracoronary hemodynamics and atherosclerotic lesion formation. This study aimed to test whether the anatomic characteristics of the left main (LM) coronary artery can predict acute myocardial infarction in the left coronary artery (AMI-LC).We retrospectively analyzed the clinical and coronary angiographic data of 1825 consecutive patients who underwent coronary angiography. Among them, 149 presented with AMI-LC, and 1118 had coronary artery stenosis >50%, but were without complete coronary occlusion. The length and diameter of the LM and the angle between the left anterior descending (LAD) or circumflex artery and the LM were determined by quantitative coronary angiography.The AMI-LC patients had a shorter LM length (11.6 ± 2.1 mm, 14.3 ± 1.9 mm, and 15.8 ± 5.9 mm, respectively; P<.001) and a larger angle between the LAD and the LM (127 ± 27°, 115 ± 29°, and 119 ± 32°, respectively; P<.001) than the coronary artery disease (CAD) patients without complete coronary occlusion and normal subjects. The patients were divided into short-LM (3.65-10.95 mm), medium-LM (10.96-15.24 mm), and long-LM (15.25-37.84 mm) groups based on the length of the LM. The incidence of AMI-LC in the short-LM group was significantly higher than in the other two groups (14.4%, 7.4%, and 4.2%, respectively; P=.001). Multiple logistic regression analysis showed that LM length and the angle between the LAD and the LM were independent predictors of the occurrence of AMI-LC. The receiver operating characteristic curve test showed that their combination can predict AMI-LC with a sensitivity of 72% and a specificity of 86%.Short LM length and a large angle between the LAD and LM may be independent risk factors for AMI-LC in CAD patients.

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