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本文述及近年来机体对高山低氧适应研究的几个侧面,以期为边防战士、铁路员工、登山者提供些适应依据。高山系指海拔3000m以上地区,海拔愈高,氧分压愈低。当海拔3000m时,气压530mmHg,氧分压110mmHg;而海拔8000m时,气压270mmHg、氧分压仅为56mmHg。在8000m高度时的肺泡气氧分压和动脉血氧饱和度均降低为3000m时的一半。
This article deals with several aspects of the body’s adaptation to alpine hypoxia in recent years, with a view to providing some basis for adaptation to border guards, railway staff and climbers. Alpine refers to the area above 3000m above sea level, the higher the altitude, the lower the partial pressure of oxygen. When the altitude is 3000m, the pressure is 530mmHg and the partial pressure of oxygen is 110mmHg. When the altitude is 8000m, the pressure is 270mmHg and the oxygen partial pressure is only 56mmHg. Alveolar oxygen partial pressure and arterial oxygen saturation at the height of 8000m were reduced to half of 3000m.