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目的研究冠心病患者的Tp-ec间期与室早指数在预测恶性室性心律失常中的关系。方法 203例经动态心电图证实为频发室性早搏的患者,根据检查结果进行分组:组1、组2、组3,分析Q-T间期、Q-TC间期、Tpe-max,Tp-ec间期与室早指数对恶性室性心律失常的预测能力比较,以及两者与患者基础心率的关系。结果组1的Tp-ec间期显著大于组2、组3,组1的室早指数显著小于组2、组3;Tp-ec间期与室早指数在预测冠心病并恶性室性心律失常患者中呈反比关系;组2、组3差异无统计学意义。结论 Tp-ec间期与室早指数作为无创性心电学指标对恶性室性心律失常均有预测价值,并且Tp-ec间期较室早指数独立于心率的改变,可作为评价跨壁复极离散度的特征性指标。
Objective To study the relationship between Tp-ec interval and ventricular premature index in predicting malignant ventricular arrhythmia in patients with coronary heart disease. Methods Totally 203 patients who were confirmed by ambulatory electrocardiogram as frequent premature ventricular contractions were divided into group 1, group 2 and group 3 according to the test results. QT interval, Q-TC interval, Tpe-max and Tp-ec The comparison of the predictive ability of stage and ventricular premature index for malignant ventricular arrhythmia, and the relationship between them and the patients’ basal heart rate. Results The Tp-ec interval of group 1 was significantly greater than that of group 2, group 3, and group 1 was significantly lower than that of group 2 and group 3. Tp-ec interval and ventricular premature index in the prediction of coronary heart disease with malignant ventricular arrhythmias Patients were inversely proportional relationship; group 2, group 3 no significant difference. Conclusion Tp-ec interventricular septum and ventricular anterior index as a noninvasive ECG indicators of malignant ventricular arrhythmias have predictive value, and Tp-ec interventricular septal index independent of changes in heart rate can be used as a measure of transmural repolarization Dispersion of the characteristic indicators.