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心血管系统的结构和功能随年龄的增长而改变。随年龄增长会出现明显或隐匿的心血管疾病,活动量的减少也会影响老年人心血管系统的功能[1]。随着年龄的增长,左右心室心肌细胞数量会有不同程度的减少,同时伴有进行性心肌细胞核体积的增大,窦房结的起搏细胞也在不断减少,75岁时存
The structure and function of the cardiovascular system change with age. With age, there will be obvious or hidden cardiovascular disease, reduced activity will affect the elderly cardiovascular system function [1]. With age, the number of left and right ventricular cardiomyocytes will be reduced to varying degrees, accompanied by an increase in the nuclear volume of progressive cardiomyocytes, sinus node pacing cells are also declining, 75-year-old