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采用动态心电图对100例冠心病患者,在日常活动状态下,连续检测24小时。结果表明,73例有284次心肌缺血发作,其中无症状缺血发作219次(77.12％)。无症状和有症状组心肌缺血的ST段压低程度无明显差异,但无症状较有症状者的缺血持续时间长(P<0.05)。无症状缺血发作有昼夜规律,在上午6～12时发作频率最高(45.2％),夜间零时至上午6时最低(8.2％)。受检者中30％检出严重心律失常及传导阻滞,其中严重定性心律失常发生率无症状较有症状缺血者明显增高。
Using dynamic electrocardiogram in 100 patients with coronary heart disease, in daily activities, continuous detection of 24 hours. The results showed that there were 284 episodes of myocardial ischemia in 73 patients, with asymptomatic ischemic episodes of 219 (77.12%). There was no significant difference in ST-segment depression between asymptomatic and symptomatic groups, but asymptomatic patients had longer duration of ischemia (P <0.05). Asymptomatic ischemic attacks have a diurnal pattern, with the highest frequency of attacks occurring at 6 to 12 am (45.2%) and the lowest at night (0 to 6 am) (8.2%) at night. 30% of the subjects were detected severe arrhythmia and conduction block, in which the incidence of asymptomatic severe asymptomatic symptoms were significantly higher than those with symptoms of ischemia.