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Walk the Even Hospital Database by book and chapter — the raw source passages that ground Ask, DDx, and the rest.

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contentuptodate· Content· item f39_30_40419

©2013 UpToDate ® Print Email Continuous positive airway pressure (CPAP) for sleep apnea The CPAP mask gently blows air into your nose while you sleep. It puts just enough pressure on your airway to keep it from closing. The mask in this picture fits over just the nose. Other CPAP devices have masks that fit over the nose and mouth.