CT血管成像联合12导联动态心电图在冠心病诊断中的应用

Application of CT Angiography Combined with 12-lead Dynamic Electrocardiogram in the Diagnosis of Coronary Heart Disease

目的探究CT血管成像联合12导联动态心电图(AECG)对冠心病的诊断价值。方法选择2015年7月至2018年1月我院心血管内科收治的疑似冠心病的患者92例作为研究对象,所有患者均行多层螺旋CT及12导联AECG检查,并经冠状动脉造影(CAG)证实,以CAG诊断结果为金标准,计算MSCT、12导联AECG及两者联合诊断冠心病的灵敏度、特异度、阳性预测值、阴性预测值及准确率。结果 MSCT诊断冠心病的灵敏度、特异度、准确度、阳性预测值、阴性预测值分别为86.79%、87.18%、86.95%、90.19%、82.93%;AECG诊断冠心病的诊断灵敏度、特异度、准确度、阳性预测值、阴性预测值分别为79.24%、84.61%、81.52%、87.50%、75.00%;两者联合诊断准确度显著高于MSCT及12导联AECG,差异具统计学意义(P﹤0.05)。结论CT血管成像联合12导联动态心电图可提高冠心病诊断准确性,可在临床上推广使用。

Objective To investigate the diagnostic value of CT angiography combined with 12-lead dynamic electrocardiogram(AECG)for the diagnosis of coronary heart disease.Methods A total of 92 patients with suspected coronary heart disease in our department from July 2015 to January 2018 were selected.All patients underwent multislice spiral CT and 12-lead AECG,confirmed by coronary angiography(CAG),taking CAG diagnosis results as the gold standard,the sensitivity,specificity,positive predictive value,negative predictive value and accuracy of coronary heart disease by MSCT,12-lead AECG and their combined diagnosis were calculated.Results The sensitivity,specificity,accuracy,positive predictive value and negative predictive value of coronary heart disease by MSCT diagnosis were 86.79%,87.18%,86.95%,90.19%and 82.93%,respectively,the sensitivity,specificity,accuracy,positive predictive value and negative predictive value of coronary heart disease by AECG diagnosis were 79.24%,84.61%,81.52%,87.50%,and 75.00%,respectively.The combined diagnosis accuracy was significantly higher than that of MSCT and 12-lead AECG(P<0.05).Conclusion CT angiography combined with 12-lead dynamic electrocardiogram can improve the diagnostic accuracy of coronary heart disease and has potential to be promoted clinically.