The air on a plane contains less oxygen than the air we normally breathe in.This leads to lower levels of oxygen in the blood. If you do not have a lung condition, the drop in oxygen is not enough that you would feel the difference.
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Most people with a lung condition can travel safely on planes, but you should talk to your doctor before you make any plans. You may need a fitness-to-fly (hypoxic challenge) test to confirm whether you need in-flight oxygen.
Low air pressure during air travel also decreases the amount of oxygen in the air. This effect is modest and generally not noticeable for healthy travelers. For patients with significant lung disease, a small decrease in available oxygen can cause significant symptoms, especially with exercise.
The only oxygen equipment allowed on an airplane is the portable oxygen concentrator (POC). If you need oxygen in flight, you must take a portable oxygen concentrator with you, and , you must let your airline know ahead of time. They may require a doctor's letter to verify the need for the POC on the plane.
Masks will automatically drop' And they will. Any cabin depressurization above a certain altitude (usually around 14,000 feet) will cause the panels of the chambers containing the masks to automatically open, and the masks to drop down. This can, of course, be done manually by the cockpit crew as well.
How come? “The pressure, temperature and oxygen levels in the cabin fluctuate, and the humidity level is lower than it is at sea level,” says Matthew Goldman, MD. All of those things can mess with some of your body's normal functions.
As you go up in altitude, available oxygen for sustaining mental and physical alertness decreases. Air pressure is lower even though the percentage of oxygen in the air is essentially the same. Dehydration can aggravate matters as more water vapor lost from breathing.