老年人高血压之特征 1.收缩期高血压多:收缩期高血压可由一次心搏出量增加及大动脉硬化弹性低下引起,老年人收缩期高血压主要原因为后者。其舒张压较低之原因为全身动脉硬化而致心功能低下,心搏出量下降。 2.血压动摇性:由于老年人动脉硬化、心搏出量缺乏缓冲性,及颈动脉窦压力感受器功 The characteristics of hypertension in the elderly 1. Systolic hypertension and more: systolic hypertension can be increased by a cardiac output and arteriosclerosis caused by low elasticity, the main reason for the elderly systolic hypertension for the latter. The reason for its lower diastolic blood pressure due to systemic arteriosclerosis and cardiac dysfunction, decreased cardiac output. 2. Blood pressure instability: due to atherosclerosis in the elderly, lack of buffer capacity of cardiac output, and carotid sinus baroreceptor work