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QT离散度（QTd）是反映心室复权状况，判衡心肌电活动是否稳定的一项指标，木文对112例急性心肌梗塞（AMI）早期QTd与室性心律失常及心性摔死的关系进行分析比较，旨在探讨QTd对AMI合并室性心律失常的愈后价值．QT离散度是指同一心电图中最大QT间或与最小QT间期之差［‘］．即Q
QTd (QTd) is an index that reflects the status of ventricular re-seizure to determine whether electrical activity of myocardium is stable. In addition, QTd analyzes the relationship between early QTd in 112 patients with AMI and ventricular arrhythmia and heart failure The purpose of this study was to investigate the prognostic value of QTd for AMI with ventricular arrhythmias. QT dispersion refers to the difference between the maximum QT of the same ECG or the minimum QT interval [’]. Q