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when you reach the 20,000 ft mark.

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Q: At what altitude does the oxygen become so thin that supplemental oxygen must be supplied?
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Do you need to wear an oxygen mask to climb mount Everest?

The overwhelming majority of climbers that summit mount Everest use supplemental oxygen. A handful of climbers are able to do it without the use of supplemental oxygen. Reinhold Messner was the first person to summit mount Everest without supplemental oxygen in 1978. Ones ability to survive at altitude without supplemental oxygen depends on general fitness, acclimatization, and genetics. In order to get used to the altitude (acclimitize) most climbers make multiple carries between pre established camps on the mountain and spending days at altitude to adjust to the low oxygen levels in the air.


How can hypoxemic anoxia be avoided?

Hypoxemic anoxia can be avoided by utilizing supplemental oxygen when in high altitudes and being aware of the early symptoms of altitude sickness and reducing altitude once recognized.


How well does supplemental oxygen work?

Supplemental oxygen works very well when used in appropriate situations.


Why is climbing the Everest difficult?

The mountain is not said to be a techncal climb, it is the high altitude and lack of oxygen that makes it hard to climb.


What is oxygen replacement?

Supplemental oxygen from portable or stationary tanks


What is the relationship of oxygen density to altitude?

As the altitude increases, the density of oxygen decreases.


Is the ratio nitrogen to oxygen changed by altitude?

No, the ratio of nitrogen to oxygen is not changed by altitude.


Why is excercise difficult at high altitude?

Lower air pressure means less oxygen. Means it's harder to keep your muscles supplied. You have to breathe faster and your heart has to pump faster


Can humans breath at 20000 feet?

Not very well. The air is simply too thin- not enough oxygen. Mountain climbers at that elevation will need supplemental oxygen in order to breath. I get winded at 14,000 feet. Of course, if you are in an aircraft that has a pressurized cabin, you are being supplied with additional air.


How is altitude treated?

Altitude sickness can be treated with oxygen therapy


What is the best way to determine if the baby requires supplemental oxygen?

Placing an oximeter on the baby's right hand or wrist is the best way to determine if a baby requires supplemental oxygen.


What is the best way to determine if a baby requires supplemental oxygen?

Placing an oximeter on the baby's right hand or wrist is the best way to determine if a baby requires supplemental oxygen.