CPAP, or continuous positive airway pressure, is a treatment that uses mild air pressure to keep the airways open. CPAP typically is used by people who have breathing problems, such as sleep apnea.
One of the most common treatments for adults with obstructive sleep apnea (OSA) is continuous positive airway pressure (CPAP). CPAP reverses the complete blockages or narrowing of the upper airway that occur during sleep in individuals who have sleep apnea. To keep the airway open, CPAP uses small amounts of air pressure and is almost always successful, when tolerated and used appropriately, to treat OSA.