心电图联合冠状动脉CT血管造影在冠心病诊断及罪犯血管定位中的应用研究

Application of Electrocardiogram Combined with Coronary CT Angiography in the Diagnosis of Coronary Heart Disease and Positioning of Culprit Vessels

目的研究心电图联合冠状动脉CT血管造影在冠心病诊断及罪犯血管定位中的应用价值。方法将我院85例疑似冠心病患者作为研究对象,均进行冠状动脉造影(CAG)、冠状动脉CT血管造影(CTA)和心电图检查,以CAG诊断结果为标准,评估CTA、心电图单独检查及其联合检查对冠心病诊断及罪犯血管定位的价值。结果85例疑似患者经CAG检查后有77例患者确诊为冠心病。心电图联合CTA对冠心病诊断灵敏度、特异度、准确度、阳性预测值、阴性预测值分别为98.70%、87.50%、97.65%、98.70%和87.50%,均高于心电图、CTA单独检查。心电图联合CTA检查定位左前降支(LAD)、左回旋支(LCX)、右冠状动脉(RCA)罪犯血管的总准确性(96.55%)均高于心电图(74.14%)、CTA(88.79%)单独检查总准确性(P<0.05)。结论心电图联合冠状动脉CTA检查对冠心病诊断及罪犯血管定位效果优于心电图、CTA单独检查。

Objective To study the application value of electrocardiogram combined with coronary CT angiography in the diagnosis of coronary heart disease and positioning of culprit vessels.Methods 85 patients with suspected coronary heart disease in the hospital were enrolled in the study.Coronary angiography (CAG),coronary CT angiography (CTA) and electrocardiography were performed on them.Taking the diagnostic results of CAG as the standard,the values of CTA,electrocardiography and their combined examination for the diagnosis of coronary heart disease and the positioning of culprit vessels were evaluated.Results Of the 85 suspected patients,there were 77 patients diagnosed with coronary heart disease by CAG.The sensitivity,specificity,accuracy,positive predictive value and negative predictive value for the diagnosis of coronary heart disease by electrocardiography combined with CTA were 98.70%,87.50%,97.65%,98.70% and 87.50%,respectively,which were all higher than those by electrocardiography or CTA. The positioning accuracy for culprit vessels such as left anterior descending (LAD),left circumflex (LCX) and right coronary artery (RCA) by electrocardiography combined with CTA (96.55%) was higher than that by electrocardiography (74.14%) or CTA (88.79%) alone (P<0.05).Conclusion The effects of electrocardiogram combined with coronary CTA are superior to the single detection of electrocardiogram and CTA in the diagnosis of coronary heart disease and positioning of culprit vessels.