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冠心病的发病率随年龄的增长而增加,80％以上的冠心病患者年龄超过65岁。冠心病是导致老年人死亡的一个常见而重要的原因。老年人由于心血管生理的特点,其冠心病过程隐匿,症状多不典型,诊断困难。本文对老年人冠心病的特点作一扼要介绍。一、老年人冠心病的病理生理特点老年人心脏由于衰老而心肌细胞老化,心肌收缩力减弱,收缩速度减慢,输出量减少,器官血液灌注量亦相应减少。在心脏贮备功能减低的基础上,如果伴发动脉硬化,则一方面外周血管阻力(后负荷)增加而加重心脏负
The incidence of coronary heart disease increases with age, more than 80% of patients with coronary heart disease over 65 years of age. Coronary heart disease is a common and important cause of death among the elderly. The elderly due to the characteristics of cardiovascular physiology, the process of coronary heart disease hidden, atypical symptoms and more difficult to diagnose. This article gives a brief introduction of the characteristics of coronary heart disease in the elderly. First, the pathophysiology of coronary heart disease in the elderly Elderly heart due to aging and myocardial cell aging, myocardial contractility weakened, the rate of contraction slowed down, the output decreased, organ blood perfusion also decreased. On the basis of a decrease in heart reserve function, if accompanied by atherosclerosis, on the one hand, peripheral vascular resistance (afterload) increases and aggravates heart negative