What is CPAP Machine? CPAP (continuous positive airway pressure) Machine is a machine that uses mild air pressure to keep breathing airways open while you sleep. Your healthcare provider may prescribe CPAP to treat sleep-related breathing disorders including sleep apnea.

CPAP machine uses a hose connected to a mask or nosepiece to deliver constant and steady air pressure to help you breathe while you sleep.

Common problems with CPAP include a leaky mask, trouble falling asleep, a stuffy nose and a dry mouth.