不同部位急性心肌梗塞QT间期离散度变化的意义

Significance of the changed QT dispersion in patients with acute myocardial infarction

目的 研究急性心肌梗塞不同梗塞部位QT离散度变化的意义。方法 对126例不同部位急性心肌 梗塞(AMI)患者的QT间期离散度(QTd)进行分析,并对其发生恶性心律失常的情况进行比较。结果 前壁梗塞 组患者的QTd明显大于下后壁梗塞患者(P<0.05),且随着梗塞面积不同各亚组间的QTd值也不同(P<0.05);有 室性心动过速(VT)、室颤(Vf)及猝死者的QTd明显大于无VT、Vf及猝死者(P(0.01)。提示:QTd有助于评估急 性心肌梗塞的病情,反映患者的预后。

Objective To investigate the Significance of the changed QT dispersion (QTd) in patients with difference site of acute myocardial infarction (AMI). Methods The QTd in 126 patients with difference site of AMI were analysed and those accompanied serious arrhythmias were discussed. Results The QTd in anterior infarctions group prolonged significantly than QTd in inferior and rear infarctions group (P<0.05), moreover, the QTd was different between in the cases with different infracted area, and the QTd in group with Ventrictular tachycardiac(VT) and ventricular frifibril-lation(VF) and sudden death prolonged significantly than QTd in group with no VT and VF and sudden death (P<0.01). Conclusions These findings suggest that QTd has referential value in evaluating the state of AMI and reflecting the prediction of AMI.