分析了老年人随着年龄的增长,其大动脉结构和功能发生变化、压力感受器敏感性降低、总外周血管阻力增高、交感神经α受体功能亢进、肾脏排钠功能减退、心动过缓,主动脉瓣关闭不全等因素是造成老年单纯收缩期高血压患者收缩压高舒张压低的原因及可能对患者的影响。 The changes of structure and function of the aorta were observed in the elderly with aging. The baroreceptor sensitivity was decreased, the total peripheral vascular resistance was increased, the sympathetic alpha receptor function was hyperactivity, the renal dysfunction of sodium in the kidneys, bradycardia, the aorta Prosthetic valve insufficiency and other factors is caused by simple systolic hypertension in elderly patients with high systolic blood pressure and possible causes of diastolic blood pressure effects on patients.