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定义和发病数安静性心肌缺血(SMI)是指无心绞痛及类同症状的一过性心肌缺血。1981年有人将本症按其临床特征分为三型:Ⅰ型为完全无症状;Ⅱ型为无痛性心肌梗塞,后又有SMI;Ⅲ型为有心绞痛同时有SMI发作。SMI的发病数很难确定。Ⅰ型者Erikssen 等在挪威检测2014例40—59岁男性办公室工作者,发现86例,其中50例冠脉造影有明显冠脉病变及运动试验阳性。另36例单运动试验阳性。Froelicher等在1390例飞行员中发现34例显著冠状动脉病变者。Langou等报告男性产业工人129例中有12例无症状而冠脉造影有明显病变。Ⅱ型
Definition and Morbidity Quiet myocardial ischemia (SMI) refers to transient myocardial ischemia without angina pectoris and the like. In 1981, the disease was classified into three types according to their clinical features: type I was completely asymptomatic; type II was painless myocardial infarction followed by SMI; type III was angina with simultaneous episodes of SMI. The incidence of SMI is difficult to determine. Type I Erikssen et al. Detected 104 male office workers aged 40-59 years in Norway, 86 of them were found. Among them, 50 cases of coronary angiography had obvious coronary artery disease and positive of exercise test. Another 36 cases of single exercise test positive. Froelicher et al found 34 patients with significant coronary lesions in 1390 pilots. Langou and other reports of 129 male industrial workers in 12 cases were asymptomatic and coronary angiography obvious lesions. Type II