Objective The significance of prognosis judging with the Dispersion Degree of QT Interval was been studied among the potients who suffered form the acute myocardial infarction.

目的：探讨急性心肌梗塞时，QT间期离散度对其预后判定的意义。

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Objective To study the lead selection of QT interval measurment in the patients with acute myocardial infarction and to examine the relation of QT dispersion with VT/VF.

目的探讨急性心肌梗死测定最大QT间期的导联选择及分析心肌梗死急性期QT离散度与恶性以律失常的相关性。

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