在心电图上,三个标准导联及三个加压肢导联中的每个导联R+S波电压之和均小于0.5毫伏,或胸导联中最大的QRS波电压小于1.0毫伏,即称为低电压。低电压多属异常表现,常见于肺气肿、粘液性水肿、心包疾患、肥胖以及广泛的心肌损害或某些心肌病等,偶见于正常人。 On the cardiogram, the sum of the R + S wave voltages for each of the three standard leads and the three pressurized limb leads is less than 0.5 mV or the maximum QRS voltage in the chest lead is less than 1.0 mV , Known as low voltage. Low-voltage abnormalities are mostly abnormal, common in emphysema, myxedema, pericardial disease, obesity and extensive myocardial damage or some cardiomyopathy, occasionally in normal people.