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Auto CPAP or APAP Machines. Similar to the CPAP machine, auto adjusting or APAP machines automatically calculate a patientâs required pressure and adjust to a comfortable level without any pre-set programming. These machines are ideal for patients who have various pressures during the night.
The CPAP machine will have one of the following: 1  A mask that covers your nose and mouth. 2  A mask that covers your nose only-called nasal continuous positive airway pressure, or NCPAP (this type of mask is most common). 3  Prongs that fit into your nose.