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采用两种心室晚电位(VLP)检测法,对186名病人VLP的检查进行了分析。两种方法应用相同的判定标准,敏感度、特异度大致相近;同一方法应用不同的判定标准则有所不同,以二项参数作为判定标准为宜。72例病人施行了电生理检查,VLP对诱发持续性室性心动过速(S—VT)的预测价值与检测方法及判定标准有关,其准确度在66.7%～81.9%之间。不论采用何种判定标准,S—VT(+)组的VLP的阳性率均高于S—VT(—)组。伴有S—VT组的陈旧性心肌梗塞、扩张型心肌病、心律失常性右室发育不良的VLP检出率高,特发性S—VT的检出率低。
Two ventricular late potentials (VLPs) were used to examine the VLPs in 186 patients. The two methods apply the same criteria, with similar sensitivities and specificities. However, the different criteria used in the same method are different, and the binomial parameters are the appropriate criteria. The electrophysiological examination was performed in 72 patients. The predictive value of VLP for the induction of sustained ventricular tachycardia (S-VT) was related to the detection methods and criteria, and the accuracy was between 66.7% and 81.9%. Regardless of the criteria used, the positive rates of VLP in the S-VT (+) group were higher than those in the S-VT (-) group. Old myocardial infarction with S-VT, dilated cardiomyopathy, high detection rate of VLP in arrhythmogenic right ventricular dysplasia and low incidence of idiopathic S-VT.