论文部分内容阅读
目的研究非ST段抬高型急性冠脉综合征(NSTE-ACS)患者心电图的QRS波宽度及aVR导联抬高幅度对冠状动脉左主干/三支病变的诊断价值。方法分析106例NSTE-ACS患者的体表心电图QRS波宽度及aVR导联ST段抬高幅度,通过与冠状动脉造影结果对比,研究其对诊断左主干/三支病变的敏感性、特异性和相关性。结果 QRS波宽度及aVR导联ST段抬高是左主干/三支病变的独立预测因子,OR值分别为9.04(95%CI,4.88～16.7)、7.10(95%CI,4.91～76.2);QRS间期≥90ms和aVR导联ST段抬高≥0.5mm预测左主干/三支病变的敏感性及特异性分别为88%、76%及88%、86%。结论 QRS波增宽及aVR导联ST段抬高是NSTE-ACS患者左主干/三支病变较为灵敏的预测因子。
Objective To investigate the diagnostic value of QRS wave width and aVR elevation of ECG on left main coronary artery and three branches of coronary artery in patients with non-ST segment elevation acute coronary syndrome (NSTE-ACS). Methods The surface ECG QRS width and ST segment elevation of aVR lead in 106 patients with NSTE-ACS were analyzed. The sensitivity, specificity and specificity of the method were compared with those of coronary angiography Correlation. Results The QRS wave width and ST segment elevation in lead aVR were independent predictors of left main / three lesions with OR values of 9.04 (95% CI, 4.88-16.7) and 7.10 (95% CI 4.91-76.2), respectively. The sensitivity and specificity of QRS interval≥90ms and ST segment elevation≥0.5mm of aVR lead were 88%, 76%, 88% and 86% respectively. Conclusions The QRS broadening and the aVR lead ST segment elevation are more sensitive predictors of left main / three lesions in patients with NSTE-ACS.