动态心电图与冠脉造影对不稳定性心绞痛诊断的比较研究  

A Comparative Study of DCG and Coronary Angiography in the Patients with Unstable Angina Pectoris

作　　者：李慧颖[1] 李静[1] LI Hui-jing;LI Jing.(Affiliated Hospital of Shangdong Academy of Medical Sciences, Jinan 250031 China.)

机构地区：[1]山东省医学科学院附属医院,山东济南250031

出　　处：《中国辐射卫生》2017年第4期504-506,共3页Chinese Journal of Radiological Health

摘　　要：目的与冠脉造影比较,探讨动态心电图对不稳定性心绞痛诊断的敏感性和特异性。方法选择80例不稳定性心绞痛(UAP)患者,入院一周内分别做冠状动脉造影(CAG)和12导动态心电图(DCG)检查。通过CAG和DCG结果对比,评价12导DCG诊断不稳定性心绞痛ST段下移的敏感性和特异性,并分析冠状动脉狭窄支数与心肌缺血程度的关系。结果与CAG比较,12导DCG诊断UAP ST段下移的敏感性和特异性分别为80.3%和84.2%。冠状动脉多支病变组与单支病变组比较,多支病变组心绞痛发作次数增加、持续时间延长,ST段下移幅度及TIB增加(P均<0.01)。结论 12导DCG能对心肌缺血部位提供较准确评估,是诊断UAP无创经济的一种检查手段。Objective On the basis of coronary angiography,to evaluate the diagnostic value of 12-lead dynamic electrocardiogram（DCG） in the patients with unstable angina pectoris.Methods A total of 80 patients with unstable angina pectoris in our hospital were examined by CAG and 12-lead DCG in a week after admission.By comparing the results of CAG and DCG,DCG of sensitivity and specificity were evaluated in the diagnosis of unstable angina pectoris.To analyze the relationship of the coronary artery stenosis count with attack frequency of myocardial ischemia,every time duration of ischemia attack and ST-segment depression performance.Results Based on CAG standard,the sensitivity and specificity of DCG in the patients of UAP were 80.3% and 84.2%,DCG of detection of UAP in myocardial ischemia was related to coronary artery stenosis severity.The sensitivity of the single branch lesions were 59.1% and the sensitivity of the multivessel lesions were 87.2%.There was significantly diffevence between the two（P〈0.05）.The coronary artery lesion occurs more and the sensitivity was high.Conclusion DCG can accuratly assess the location of myocardial ischemia in the patients of UAP,so it is a noninvasive,economic method for the diagnosis of UAP and can assess myocardial ischemia and ischemia range of severity and can improve the quality of life of the patients and the prognosis.

关 键 词：不稳定性心绞痛 动态心电图 冠状动脉造影 敏感性和特异性 

分 类 号：R814.43[医药卫生—影像医学与核医学]