血氧饱和度(SaO2)是反映机体供氧程度的重要指标。平原人进入高原后,由于大气压降低,肺泡氧分压也降低,氧弥散入肺毛细血管减少,动脉血氧饱和度因此降低,造成机体供氧减少,组织细胞缺氧、氧化磷酸化过程受阻、ATP等高能化合物生成减少,这是高原环境下人体劳动能力下降的重要原 Blood oxygen saturation (SaO2) is an important indicator of the degree of oxygen supply to the body. Plain people into the plateau, due to lower atmospheric pressure, alveolar oxygen partial pressure is also reduced, oxygen diffuse into the lung capillaries decreased arterial oxygen saturation and thus reduce the body to reduce oxygen, tissue cells hypoxia, oxidative phosphorylation blocked, ATP and other high-energy compounds to reduce generation, which is the plateau environment, the ability of the human body to reduce the important original