老年手术病人怎么保护心脏

心脏怎样老化：心脏最重要的功能是根据身体的需要维持心排出量(CO)。老年人由于身体肌肉量的减少,基础代谢率的下降,CO逐年降低。Brandfonbrener等证明:CO从23.6岁时的6.49升/分(3.72升/分/米~2)降低到82岁时的3.87升/分(2.36升/分/米~2)。每搏输出量(SV)的减少比心率减少更明显。SV从85.6毫升(48.9毫升/米2)减少到60.1毫升(36.5毫升/米2)。

Heart how aging: the most important function of the heart is according to the needs of the body to maintain cardiac output (CO).The elderly because of the reduced the amount of the body's muscles, basal metabolic rate drop, CO reduced year by year.Cardiac function related to the life, the heart is mainly aging every cardiac output reduction, surgical stress injury of cardiac function, proper protection measures to promote the patient's recovery.