While CPAP delivers one continuous pressure level of air, an APAP automatically adjusts to meet each specific person?s breathing needs, which often change throughout the night as we move in and out of different stages of sleep. By constantly measuring how much resistance is present in your breathing on a breath-by-breath level, APAP technology knows whether to decrease pressure when your upper airway is stable, and increase pressure when it senses an airway event (such as an apnea, a hypopnea, flow limitation or snoring).
Unlike a CPAP device, APAP machines only deliver the amount of pressure that?s necessary at any given moment. Physicians sometimes find that patients with more complex sleep apnea conditions (such as REM-related apnea or positional apnea), or who simply cannot get used to standard CPAP therapy, may experience better results with APAP therapy.
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