Ross R S
Trans Am Clin Climatol Assoc. 1980;91:1-15.
Coronary bypass surgery is highly effective in relieving angina pectoris. Early results of several well controlled studies show a small, but definite positive effect of surgery on life expectancy. The effect on prognosis is greatest in patients with the most severe arterial and myocardial disease. The discrepancy between the large effect on symptoms and the small effect on survival is best explained by postulating more than one mechanism of action for the operation.
冠状动脉搭桥手术在缓解心绞痛方面非常有效。几项严格对照研究的早期结果显示,手术对预期寿命有微小但确切的积极影响。对预后的影响在患有最严重动脉和心肌疾病的患者中最为显著。手术对症状有很大影响而对生存率影响较小之间的差异,最好通过假定该手术存在不止一种作用机制来解释。