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2. Continuous positive airway pressure - Wikipedia

   en.wikipedia.org/wiki/Continuous_positive_airway...

   A full face mask over the mouth and nose is another approach for people who breathe out of their mouths when they sleep. [13] Often, oral masks and naso-oral masks are used when nasal congestion or obstruction is an issue. [medical citation needed] There are also devices that combine nasal pressure with mandibular advancement devices (MAD).

3. Positive airway pressure - Wikipedia

   en.wikipedia.org/wiki/Positive_airway_pressure

   Some full-face masks "float" on the face like a hover-craft, with thin, soft, flexible "curtains" ensuring less skin abrasion, and the possibility of coughing and yawning. Some people may find wearing a CPAP mask uncomfortable or constricting: eyeglass wearers and bearded men may prefer the nasal-pillow type of mask.

4. Glossary of breathing apparatus terminology - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_breathing...

   Oxygen masks may cover only the nose and mouth (oral-nasal mask) or the entire face (full-face mask). oxygen tent An oxygen tent is a delivery method for supplemental oxygen. It consists of a canopy placed over the whole body or part of the body including the nose and mouth, into which an oxygen enriched gas supply is introduced, at a rate ...

5. Hans Rudolph - Wikipedia

   en.wikipedia.org/wiki/Hans_Rudolph

   Hans Rudolph's grandsons, Kevin Rudolph and Kelly Rudolph, joined the business after graduating from university programs. Kevin and others worked on a mouth face mask for the CPAP machine and the mask was patented in 1991. It is ironic that production of CPAP masks did not begin until near the very end of Hans Rudolph's life. Elizabeth died in ...

6. Self-contained breathing apparatus - Wikipedia

   en.wikipedia.org/wiki/Self-contained_breathing...

   An open-circuit rescue or firefighting SCBA has a full-face mask, also called the face-piece, a demand regulator, air cylinder, pressure gauge, (sometimes with an integrated PASS device), and a harness with adjustable shoulder straps and waist belt which lets it be worn on the back. The air cylinder is commonly 4 liter, 6 liter, or 6.8 liter ...

7. How Much Do Masks Really Cost? From Cloth to KN95, Here ... - AOL

   www.aol.com/much-masks-really-cost-cloth...

   The CDC recommends finding a cloth mask that has two or more layers of breathable fabric that fits snuggly against the sides of your face. You can find a pack of two fabric masks for as low as $4. ...