aVR T波形态在评估急性冠状动脉综合征三支病变患者左心功能中的意义

目的 研究急性冠状动脉综合征(ACS)三支病变患者心电图aVR导联T波形态预测左心功能变化的意义.方法 160名冠状动脉造影明确的ACS三支病变患者按照入院心电图aVR导联T波形态分为T波直立组(72例)和T波倒置组(88例),比较两组一般资料、左心功能、冠状动脉病变及临床结局情况.结果 与T波倒置组比较,T波直立组左...

Significance of T wave morphology in lead aVR in evaluating left ventricular function in patients with acute coronary syndrome with three-vessel disease

Aim To study the significance of T wave shape of aVR lead in predicting left ventricular function in patients with acute coronary syndrome(ACS)with three-vessel disease.Methods 160 patients with ACS three-vessel disease confirmed by coronary angiography were enrolled and divided into T-wave upright group(n=72)and T-wave inversion group(n=88)according to the T-wave morphology in lead aVR of electrocardiogram.The general data,left ventricular function,coronary artery lesion and clinical outcome were compared between the two groups.Results Ejection fraction(LVEF)was lower but proportion of LVEF<50%,serum N-terminal pro-brain natriuretic peptide(NT-proBNP),Gensini score,Syntax score and proportion of Syntax≥23 were higher in T-wave upright group than in T-wave inversion group(all P<0.05).Compared with the T-wave inversion group,the upright group had more cases of using vasopressor and longer average hospitalization day(all P<0.05).Spearman correlation analysis showed that upright T wave in lead aVR was negatively correlated with LVEF,and positively correlated with Gensini and Syntax score,NT-proBNP,LVEF and hospitalization day(all P<0.05).Multivariate Logistic regression analysis showed that upright T wave in lead aVR was independently associated with ejection fraction.Conclusions The patients of upright T wave in lead aVR with ACS three-vessel disease had lower LVEF values and worse clinical outcome than that of T wave inversion.Upright T wave in lead aVR can be used to evaluate the left ventricular function in patients with ACS three-vessel disease.