急性心肌梗塞病人12导联心电图QT间期离散度的对照研究

A study of QT dispersion on 12 leads ECG in patients with acute myocardial infarction

目的 :观察心肌梗塞病人发病 2 4 h内及发病后 4 8～ 72 h的 QTd变化情况 ,了解 QTd与心梗发生室性心律失常的关系。方法 :本组纳入心梗病人 6 2例 ,分发生室性心律失常和未发生室性心律失常两组 ,分别测量其发病 2 4 h及发病后 4 8～ 72 h的 QTd,并比较两组指标。结果 :1发生室内性心律失常的心梗病人 QTd显著高于未发生心律失常组 ;2心梗发病 2 4 h内 QTd显著高于发病后 4 8～72 h。结论 :急性心梗病人测量

Objective:[WT5BZ]To understand the changes of QT dispersion(QTd), and study the relationship between QTd and ventricular arrhythmias in patients with acute myocardial infarction.[WT5HZ]Methods:[WT5BZ]The QTd between two groups of patients with acute myocardial infarction were compared respectively:32 patients with sustained ventricular arrhythmias and 30 patients without such arrhythmias on 12 leads ECG within 24 hours and during 48 to 72 hours after onset.[WT5HZ]Reults:[WT5BZ](1)The mean QTd in patients with acute myocardial infarction was higher within 24 hour than during 48 to 72 hours after onset.(2)The mean QTd in patients with ventricular arrhythmias was significantly higher than that of patients without ventricular arrhythmias.[WT5HZ]Conclusion:[WT5BZ]The results indicate that measurements of QTd may be of significant in predicting serious ventricular arrhythmias for patients with acute myocardial infarction.