跨室壁复极离散度对扩张型心肌病患者室性心律失常的预测价值

The Predictive Value of Transmural Dispersion of Repolarization to Incidence of Ventricular Arrhythmias in Patients with Dilated Cardiomyopathy

目的:探讨跨室壁复极离散度(TDR)预测扩张型心肌病患者室性心律失常(VA)的价值。方法:测定全部156例扩心肌病患者心电图导联TpTe和TpTe/QT的参考值范围,分析其与室性心律失常的关系。结果:扩心肌病患者TpTe和TpTe/QT的参考值范围分别为:69～97ms,0.20～0.24;两者预测室性心律失常敏感度、特异度、阳性预测值、阴性预测值和阳性似然比分别为:48.3%、42.5%、35.7%、55.5%、0.84和74.2%、89.4%、82.1%、84.0%、7。结论:跨室壁复极离散度增大是室性心律失常的重要原因,TpTe值对室性心律失常的预测价值较小,而TpTe/QT有较大的预测价值。

Objective： Discuss the predictive value of transmural dispersion of repolarization（TDR） to incidence of ventricular arrhythmias in patients with dilated cardiomyopathy.Methods： By measuring the reference range of TpTe and TpTe/QT in 156 patients with dilated cardiomyopathy,then analyzing the relationship between ventricular arrhythmias and them.Results： The reference range of TpTe and TpTe/QT in patients with dilated cardiomyopathy are（69～97） ms and（0.20～0.24）;Their predictive sensitivity,specificity,positive predictive value,negative predictive value and positive likelihood ratio to ventricular arrhythmias are 48.3%、42.5%,35.7%,55.5%,0.84 and 74.2%,89.4%,82.1%,84.0%,7.Conclusion： The increase of TDR is an important reason of ventricular arrhythmia,but the predictive value of TpTe to ventricular arrhythmia is smaller than TpTe/QT.