【摘要】 心室晚电位(VLP)是预测心肌梗塞(MI)后发生恶性室性心律失常可能性的一项指标。本文检测1000例VLP。诊断标准为:①滤波后总QRS时限(Total QRS)≥120ms/40Hz;②滤波后QRS终末40μV以下的低振幅信号持续时间(Under 40μV)≥38ms/40Hz;③滤波后QRS终末40ms均方根电压(Last40ms)≤20μV/40Hz。以Last40ms≤20μV/40Hz为主要指标,结合第一项和第二项其中一项异常,可判定VLP阳性。要求噪声小于0.8μV。心血管病组VLP阳性率(14.57％)显著高于非心血管病组(1.49％),P<0.01。MI组VLP阳性率(50％)明显高于高血压病组(6.38％),P<0.01。MI部位对检出阳性率有关,下壁MI的VLP阳性率高。可能某些因素也会影响晚电位的存在,有待进一步探讨。更多还原

【Abstract】 Positive VLP previsions serious ventricular arrhythmia after falling ill with MI. 1 000 cases’ VLP was examined. Diagnostic standard is that,(1)Total QRS≥120 ms/ 40 Hz; (2)Under 40 μV>38 ms/40 Hz; (3) Last 40 ms< 20 μV/40 Hz: It is positive that the third term adds one of both first or second. Noise<0. 8 μV.Positive VLP rate in the group of cardiovascular disease (14. 57%) is higher than in the group of other diseases (1. 49%, P< 0. 01). Positive VLP rate in the patient with MI (50%) is higher than that in the sufferers with hypertension disease (6. 38%, P<0. 01). There is a position of MI relating to the positive rate, which is higher in the trouble with inferior MI. Probable, some factor has an influence on VLP, henceforth to approach farther.更多还原