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体表心电图不同导联间QT间期的差别称为QT离散度（QT，disperson，QTd），它反映心室复极时间的局部差异’“。我们分析了住院期间摔死的急性心肌梗死（AMI）12例与存活的住院AMI人院时心电图的QT离散度的关系，探讨其能否预测心性摔死。1对象和方法1．1对象1985～1999年，我院
The difference in QT interval between different leads on the surface ECG is called QT dispersion (QTd), which reflects the local difference in ventricular repolarization time. “” We analyzed the incidence of acute myocardial infarction (AMI) ) 12 cases with survival of hospitalized patients with AMI hospital QT dispersion of ECG, to explore whether it can predict cardiac disability .1 objects and methods 1.1 objects 1985 to 1999, our hospital