氧,是人类生存中必不可少的一种物质。它通过参与糖、脂肪和蛋白质的氧化过程,产生维护人体正常生命活动所需要的能量,促使新陈代谢的正常进行。一旦发生缺氧而不能及时补充,人体健康就要受到影响,甚至会引起生命危险。因此,人们在维持生命活动中,及时补氧是很有必要的。不过,就人体生命活动的整个过程来说,缺氧现象的产生是一种很特殊的情况。只有在大气压过低、血循环不良、组织中毒性缺氧以及呼吸系统功能发生严重病变,致使氧的利用率过低情况下,医护人员才会针对这些 Oxygen is an indispensable substance in human existence. By participating in the oxidation process of sugar, fat and protein, it produces the energy needed to maintain the normal life activities of the human body and promotes the normal metabolism. In the event of hypoxia and can not be replenished in time, human health will be affected, and even cause life-threatening. Therefore, people in maintaining life activities, timely oxygen is necessary. However, the whole process of human life activities, the occurrence of hypoxia is a very special situation. Only in the low atmospheric pressure, poor blood circulation, tissue hypoxia and respiratory disease serious disease, resulting in the utilization of oxygen is too low, health care professionals will target these