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

目的：观察心肌梗塞病人发病２４h内及发病后４８－７２h r 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６２例，分发生室性心律失常和未发生室民生心律失常两组，分别测量其发病２４h 及发病后４８－７２h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２４h内ＱＴd显著高于发病后４８－７２h ,结论：急性心梗病人测量ＱＴd对于预则室性心律失常的发生有重要意义。

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

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.