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从体表非损伤地记录的心电微电位,特别是从高增益ECG中得到的所谓心室晚电位,对于严重心律失常和突然死亡的予先诊断有着重要的临床意义,而真正能成为临床上实用的诊断方法则取决于如何选择具有重要临床意义的参数。本文采用较多的参数提取方法提高了病理性ECG的检出率。实验对84名患有包括心肌梗塞、室性心动过速及怀疑有室性心动过速和无室速的病人及38名健康人的高增益ECG进行了时域和频域的分析。在时域内对晚电位的均值、标准差和总向量值及均方根
Non-invasively recorded ECG micro-potentials from the surface of the body, especially the so-called ventricular late potentials obtained from high-gain ECG, have important clinical implications for the pre-diagnosis of severe arrhythmia and sudden death, and are truly clinically Practical diagnostic methods depend on how to choose parameters of clinical importance. In this paper, more parameters extraction method to improve the detection rate of pathological ECG. Experiments were performed in 84 patients with high-gain ECGs including myocardial infarction, ventricular tachycardia and suspected ventricular tachycardia and ventricular tachycardia, as well as 38 healthy individuals in both time and frequency domain. Mean, standard deviation, and total vector values for the late potential in the time domain and root mean square