Version May 2024
| High altitude: 1500 to 3500 m (4921-11,483 ft) |
| High-altitude illness common with abrupt ascent to above 2500 m (8202 ft) |
| Decreased exercise performance and increased ventilation |
| Minor impairment in SpO2, usually at least 90 percent; PaO2 significantly diminished 55 to 75 mmHg |
| Very high altitude: 3500 to 5500 m (11,483-18,045 ft) |
| Most common range for severe high-altitude illness |
| Abrupt ascent may be dangerous; requires a period of acclimatization |
| SpO2 75 to 85 percent; PaO2 40 to 60 mmHg |
| Extreme hypoxia may occur during sleep, exercise and high-altitude illness |
| Extreme altitude: 5500 to 8850 m (18,045-29,035 ft) |
| Progressive deterioration of physiologic function eventually outstrips acclimatization |
| Above the highest permanent human habitation |
| Abrupt ascent almost always precipitates severe high-altitude illness |
| A period of acclimatization necessary to ascend to extreme altitude |
| Severe hypoxia and hypocapnia; SpO2 58 to 75 percent, PaO2 28 to 40 mmHg |
آیا می خواهید مدیلیب را به صفحه اصلی خود اضافه کنید؟
