Oxygen tents were once commonly used in oxygen supplementation, but have since been replaced mostly by the use of oxygen masks or nasal cannulas.
en.wikipedia.org Well, unless you have an oxygen tent or want to keep your cat or dog inside for the summer, then there isn't a lot of prevention that can be achieved.
www.stuff.co.nz Such equipment can withstand repeated use in a patient's home and includes wheelchairs, hospital beds, catheters, nebulizers, iron lungs, and oxygen tents.
www.silive.com An oxygen tent can be used in either a hospital setting or outside a health-care facility, and can be recommended for short- or long-term therapy.
en.wikipedia.org Athletes go to altitude or use the low oxygen tents to stimulate the body's production of red blood cells, which then help carry oxygen more efficiently around the body.
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