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目的 :探讨QT离散度 (QTd)及V1导联P波终末电势 (PTFv1)对老年急性心肌梗死患者心脏事件发生的预测价值。方法 :比较 46例老年急性心肌梗死患者与 34例非老年急性心肌梗死患者的QTd ,QTc离散度 (QTcd) ,PTFv1及左室射血分数 (EF)。结果 :老年组患者的QTd及QTcd显著高于非老年组患者 (P <0 0 1) ;而老年组的PTFv1,EF值比非老年组显著下降 (P <0 0 1)。结论 :QTd ,QTcd ,PTFv1,EF可作为确定危险分层和预测特发心脏事件的参数。
Objective: To investigate the predictive value of QT dispersion (QTd) and P wave terminal potential (PTFv1) of V1 lead to the occurrence of cardiac events in elderly patients with acute myocardial infarction. Methods: QTd, QTc Dispersion (QTcd), PTFv1 and left ventricular ejection fraction (EF) were compared between 46 elderly patients with acute myocardial infarction and 34 elderly patients with acute myocardial infarction. Results: The QTd and QTcd in the elderly group were significantly higher than those in the non-elderly group (P <0.01), while the values of PTFv1 and EF in the elderly group were significantly lower than those in the non-elderly group (P <0.01). Conclusion: QTd, QTcd, PTFv1, EF can be used as parameters to determine risk stratification and predict idiopathic cardiac events.