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目的 探讨急性心肌梗塞(AMI)早期QT离散度增加与室性心律失常的关系。方法 测定52例AMI患者的QT间期离散度(QTd)并计算其校正后的QTd(QTcd)。结果 心律失常组QTd、QTcd大于无心律失常组,二者有显著性差异(P<0.01)。QTd、QTcd大于100ms患者中室性心律失常的发生率明显高于QTd、QTcd小于100ms者。结论 AMI患者QTd、QTcd增加者室性心律失常发生率高。
Objective To investigate the relationship between early QT dispersion in acute myocardial infarction (AMI) and ventricular arrhythmia. Methods The QTd of 52 AMI patients were measured and the corrected QTd (QTcd) was calculated. Results QTd and QTcd in arrhythmia group were significantly higher than those in arrhythmia group (P <0.01). QTd, QTcd greater than 100ms in patients with ventricular arrhythmia was significantly higher than the incidence of QTd, QTcd less than 100ms. Conclusions The incidence of ventricular arrhythmia in QId and QTcd patients with AMI is high.