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流行病学研究提示,某些临床症状和体征有指示冠心病患者预后不良的价值。这些临床危险因子或称危险性参数包括纽约心脏协会的心功能Ⅲ级～Ⅳ级、心肌梗塞史、充血性心力衰竭、高血压、糖尿病和心电图异常。冠状动脉旁路手术的远期效果似乎与其中某些选择性危险因子有关。为此,退伍军人管理局对有稳定型心绞痛的冠心病患者进行临床试验,随访6.5年,用临床危险性参数把冠心病患者分成危险性低、中、高三组,比较冠状动脉旁路手
Epidemiological studies suggest that some of the clinical signs and symptoms of coronary heart disease patients with poor prognosis value. These clinical risk factors, or risk factors, include NYHA Cardiac Function Grade III-IV, history of myocardial infarction, congestive heart failure, hypertension, diabetes and electrocardiogram abnormalities. The long-term effect of coronary artery bypass surgery appears to be related to some of the selective risk factors. To this end, the Veterans Administration of coronary heart disease patients with stable angina clinical trials, follow-up 6.5 years, with clinical risk parameters of coronary heart disease were divided into low, medium and high risk groups, compared with coronary artery bypass