不同病因和不同类型室性心动过速心室晚电位检测

本文对63例不同病因和不同类型室性心动过速(简称室速)病人的晚电位(late potential,LP)检测结果表明,陈旧性心肌梗塞(OMI)伴单形持续性室速组LP检出率75％,与致心律失常性右室发育不良伴单形持续性室速组(100％)无显著性差异(P>0.05);而显著高于OMI伴非持续性室速组(31.5％,P<0.05)和特发性室速组(6.1％,P<0.001)。对不同组的部分病人进行了心脏电程序刺激,不同组的室速诱发率和诱发的刺激部位也不相同。本研究提示临床不同病因和不同类型室速的机制可能不同。

Detection of Ventricular Late Potentials in Patients With Ventricular tachycardia of Different Etiology and Different Types

The ventricular late potentials (VLPs) detection was performed on 63 cases with ventricular tachycardia (VT) of different etiology and different types. Male 39 and female 24. Age 13-76 (mean 52±8.35) years old. The VLPs were postive in 75% (9/12) of the patients with old myocardial infarction(OMI) complicated by sustained monomorphic VT. The number was not different significantly from that in the patients with arrhythmogenic right ventricular dysplasla (ARVD) complicated by sustained monomorphic VT (100%, 2/2, P>0.05) but statistically higher than those in patients with OMI complicated by nonsustained monomorphic VT(31.25%, 5/16, P<0.05) and in patients with idiopathic VT(6.1%, 2/33,P<0.001). The programmed electrical stimulation (PES) of the heart was performed in some patients of each group. The VT-induction rate as well as the stimulation location for induction were different in different groups. The primary results of the study suggested that VTs of different etiology and different type might have different mechanisms.