扩张型心肌病室性心律失常的临床及心室晚电位分析

The Clinical and Ventricular Late Potential Analyses on Ventricular Arrhythmia Patients with Dilated Cardiomyopathy

对41例扩张型心肌病(DCM)病人进行ECG、Holter、X线胸片、超声心动图和体表心室晚电位(VLP)检查。结果表明,有室性心动过速(VT)或心室纤颤(VF)病人的左室舒张末内径、左室射血分数和VLP阳性率与无VT和/或VF(VT/VF)的病人有明显差异(P<0.05)。而在VLP阳性组病人的VT/VF发生率明显高于VLP阴性组(P<0.05)。VLP阳性对识别DCM合并VT/VF者的敏感性、特异性分别为61.54％和77.78％。

Forty-one cases with dilated cardiomyopathy (DCM) underwent examinations of EGG,chest X-ray film, UCG, Holter and ventricular late potential (VLP) cardiography. The results showed that left ventricular end-diastolic diameter (LVEDD) was larger and positive rate of VLP was higher in the group of ventricular tachycardia (VT) or ventricular fibrillation (VF)than that in the group of patients with neither VT nor VF ( P < 0. 05), but left ventricular ejection fraction (LVEF) in the VT/VF group was lower than that in the other group (P<0. 05). The incidence of VT/VF in the VLP positive group was higher than that in the VLP negative group (.P<0. 05). The sensitivity and specificity of positive VLP for predicting the occurence of VT/VF were 61.54%and 77.78% respectively.