What is an oxygen mask used for?

An oxygen mask is a medical device that covers the nose and mouth, providing a reservoir of oxygen to the patient. It allows for increased oxygen levels in the inhaled air, helps prevent CO2 rebreathing, and permits humidification of gases to reduce mucous membrane drying.

Oxygen masks protect passengers from hypoxia. Hypoxia is a medical condition that's characterized by insufficient oxygen to the body. Every organ and even every cell in the human body needs oxygen need to survive.

Supplemental oxygen therapy helps people with COPD, COVID-19, emphysema, sleep apnea and other breathing problems get enough oxygen to function and stay well. Low blood oxygen levels (hypoxemia) can damage organs and be life-threatening.

If you were sick with pneumonia or COVID-19, supplemental oxygen may be needed in the short term, for three to six months, until your lungs heal. If you have a history of lung disease, you may be prescribed supplemental oxygen long term.

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