APAP or Auto-PAP, which stands for Automatic Positive Airway Pressure, is a clinically proven treatment for Obstructive Sleep Apnea. They are the automatic version of CPAP Machines. APAP machines use algorithms to subtly sense changes in your breathing and will adjust the pressure of the air required to keep your airway open. At certain times of the night you may require less pressure and at other times you might require more. We carry ResMed AirSense 10 AutoSet and AirSense 11 AutoSet.