论文部分内容阅读
已知随着年龄增长出现动脉血压及血浆去甲肾上腺素水平的相应升高。近年提出一种假说解释上述现象:即伴随衰老发生压力感受器敏感性的下降,导致减压反射失常并引起代偿性血压升高的后果。该过程可能以支配心血管的交感神经兴奋性增强从而增加
It is known that arterial blood pressure increases with age and a corresponding increase in plasma norepinephrine level. In recent years, a hypothesis has been proposed to explain the above phenomenon: a decrease in baroreceptor sensitivity with aging, resulting in a disturbance of decompression reflex and a consequent rise in compensatory blood pressure. This process may increase at the expense of increased cardiovascular excitability