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采用高通双向数字滤波体表信号平均心电图,检查51例心肌梗塞患者的心室晚电位。结果表明,心室晚电位在急性心肌梗塞组、下壁心肌梗塞组,室性心律失常组有较高的发生率,分别为54.6％,45.0％,57.1％,与其对应的对照组有显著差别(P<0.05)。可能与心肌缺血、水肿、炎症、疤痕等的病理改变、心室除极顺序、慢传导等有关。心力衰竭组,梗塞后心绞痛组的晚电位发生率与其相应的对照组则无显著差别(P>0.05)。
Using high-pass bi-directional digital filter body surface signal average ECG, check the 51 cases of myocardial infarction ventricular late potentials. The results showed that the ventricular late potentials were higher in acute myocardial infarction group, inferior myocardial infarction group and ventricular arrhythmia group (54.6%, 45.0% and 57.1%, respectively), which were significantly different from the corresponding control group P <0.05). May be associated with myocardial ischemia, edema, inflammation, scar pathology, ventricular depolarization order, slow conduction and so on. The incidence of late potentials in heart failure group and post-infarction angina group was not significantly different from the corresponding control group (P> 0.05).