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用体表叠加平均心电图(SAECG)记录分析系统对115例正常人和116例冠心病心肌梗塞(MI)患者作SAECG 记录并进行心室晚电位(VLP)及频谱分析,发现 MI 患者 VLP 阳性率为37.30%;正常人 SAECG 频谱的高频成份(20—150Hz)明显低于 MI 患者(P<0.01),低频成份(0—20Hz)明显高于 MI 患者(P<0.01)。提示 MI 患者可能发生 VLP,其频率结构中高频成份明显增多。
SAECG recording and analysis system was used to record 115 patients with normal and 116 patients with coronary heart disease (MI) for SAECG recording and ventricular late potential (VLP) and spectrum analysis. The positive rate of VLP in MI patients was 37.30%. The normal frequency of SAECG spectrum (20-150Hz) was significantly lower than that of MI patients (P <0.01), low frequency component (0-20Hz) was significantly higher than MI patients (P <0.01). Tip MI patients may occur VLP, the frequency structure of high-frequency components increased significantly.