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本文检测53例扩张型心肌病(DCM)及35例健康人心室晚电位(VLP),结果DCM组VLP阳性率为39.6％,健康人2.9％,差异非常显著。DCM伴室速(VT)/室颤(VF)者VLP阳性达84.2％,无VT/VF者阳性率14.7％。VLP预测DCM VT/VF的敏感性、特异性、和标准性分别为76.2％、90.6％、84.9％。对25例DCM病人VLP作治疗前后(间隔20天～30天)动态观察,各项参数无显著差异,但少数病人可随QRSD延长而猝死,VLP可随心功能变化而变化。
In this study, 53 cases of dilated cardiomyopathy (DCM) and 35 healthy subjects ventricular potential (VLP) were detected. The results showed VLP positive rate was 39.6% in DCM group and 2.9% in healthy group, the difference was significant. The VLP positive rate was 84.2% in DCM patients with ventricular tachycardia (VT) / ventricular fibrillation (VF), and 14.7% in patients without VT / VF. The sensitivity, specificity, and standardity of VLP predicting DCM VT / VF were 76.2%, 90.6% and 84.9%, respectively. Before and after treatment of VLP in 25 patients with DCM (interval 20-30 days), there was no significant difference between the parameters. However, a few patients died of sudden death with prolongation of QRSD. VLP may change with the change of cardiac function.