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通过微机对112例健康成人记录Langner倡导的三个最大肢导联和V_4-V_6导联的高频心电图.对两个不同年龄组(40岁为界)的切迹、最高频率以及频谱含量进行分析,结果表明:①正常成人六导联组合切迹数总和不超过3个,超过3个切迹的假阳性率的12.54%,两年龄组间无显著性差异(P>0.05).②低龄组最高频率较高龄组高,年龄组间显著性检验(P<0.05).③年龄与最高频率呈负相关,显著性检验有高度显著性(P<0.01);年龄与切迹数相关较离散0.020.05).④谱图分析表明,两年龄组的功率百分比在20HZ内最高,随频段增多,功率百分比下降,50HZ以后接近最低;两年龄组在30HZ内频谱含量无明显差异,30HZ以后高龄组频谱含量较低龄组增多.
The frequency of electrocardiogram of three maximal limb leads and V_4-V_6 leads advocated by Langner was recorded by microcomputer to 112 healthy adults.The notch, the highest frequency and the spectral content of two different age groups (40 years old) The results showed that: (1) The total number of notch of combination of six lead in normal adults was no more than 3, and the false positive rate of more than three notch was 12.54%, there was no significant difference between the two age groups (P> 0.05) (P <0.05) .③The age was negatively correlated with the highest frequency, and the significant test was highly significant (P <0.01). The correlation between age and notch number was significantly lower than that of the age group 0.02
0.05) .④The spectral analysis showed that the power percentage of the two age groups was the highest in 20HZ, the power percentage decreased with the increase of frequency band, The lowest in the two age groups within 30HZ spectrum content was no significant difference in the elderly group after 30HZ lower frequency spectrum group increased.