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目的 :探讨急性心肌梗死时QT离散度与室性心律失常的关系。方法 :测量 72例急性心肌梗死QT离散度 (QTd) ,计算校正QT离散度 (QTcd)。分析QTd ,QTcd以及室性心律失常 (VA)之间的关系。结果 :急性心肌梗死合并室性心律失常组 (VA)组QTd和QTcd均显著高于无室性心律失常组 (NAV)组 ,P <0 .0 1;急性心肌梗死患者QTcd≥ 6 0ms者 ,其VA发生率显著高于QTcd <6 0ms者 ,P <0 .0 1。结论 :急性心肌梗死患者QTd或QTcd值越大 ,室性心律失常发生率越高
Objective: To investigate the relationship between QT dispersion and ventricular arrhythmia in acute myocardial infarction. Methods: QTd was measured in 72 AMI patients and the corrected QT dispersion (QTcd) was calculated. Analyze the relationship between QTd, QTcd, and ventricular arrhythmia (VA). Results: The QTd and QTcd of acute myocardial infarction with ventricular arrhythmia group (VA) were significantly higher than those of non-ventricular arrhythmia group (P <0.01); QTcd≥6.0 ms in patients with acute myocardial infarction, The incidence of VA was significantly higher than those with QTcd <6 0ms, P <0.01. Conclusions: The greater the QTd or QTcd value in patients with acute myocardial infarction, the higher the incidence of ventricular arrhythmias