Sensitivity and specificity of identification of the infarct-related artery by electrocardiogram / 中国介入心脏病学杂志

ABSTRACT

Objective To evaluate the sensitivity,specificity and accuracy of the algorithm for electrocardiographic identification of the IRA and exact site of occlusion of the IRA.Methods According to the algorithm for electrocardiographic identification,we predicted the IRA by analyzing ECG in 896 patients with ST-segment elevation myocardial infarction(STEMI),who were enrolled in this study and underwent primary coronary angiography.Results The results indicated that left main coronary disease showed a sensitivity of 100%,specificity of 99% and accuracy of 99%;and at the same time the left anterior descending artery(LAD) with 99%,99% and 99%(proximal LAD 84%,90% and 88%;middle and distal LAD 57%,94% and 88%);the left circumflex artery with 64%,95% and 91%;the right coronary artery(RCA)89%,92% and 91%(proximal RCA 51%,96% and 88%;middle and distal RCA 68%,92% and 85%) respectively.Conclusion This study suggests that electrocardiogram is a crucial tool in the identification of the IRA in left main coronary,LAD and proximal RCA with predicting exact site of culprit lesion.The LCX or middle and distal RCA can be difficult to discriminate.