nonrebreathing mask


Also found in: Dictionary, Thesaurus, Legal, Encyclopedia.

non·re·breath·ing mask

a mask fitted with both an inhalation valve and an exhalation valve so that all exhaled gas is vented to the external atmosphere and inhaled gas comes only from a reservoir connected to the mask.

nonrebreathing mask

An oxygen administration device with one-way valves for inspiration and expiration and a reservoir bag, used to attain high concentrations of oxygen.
See also: mask

non·re·breath·ing mask

(nonrē-brēdhing mask)
Mask fitted with both inhalation and exhalation valves so that all exhaled gas is vented to external atmosphere and inhaled gas comes only from a reservoir connected to the mask.
Mentioned in ?