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作者观察了2035例患心肌梗死后能走动的并生存三个月以上长期服用冠心药物的病人。全部病例在休息时作了心电图(平均每例有49.4次搏动),其中271例(占13.3%)有一次或一次以上过早搏动,221例(占10.8%)有室性过早搏动
The authors looked at 2035 patients who were ambulatory after myocardial infarction and who had long-term coronary heart disease for more than three months. All cases underwent electrocardiogram at rest (average 49.4 beats per case), of which 271 (13.3%) had one or more beats prematurely and 221 (10.8%) had premature ventricular beats