What is CPAP (Continuous Positive Airway Pressure)?

CPAP machines offer air pressure in the mouth and nose to get you the oxygen you need for optimal functioning. The function of CPAP is like a balloon pump putting air into a balloon to keep it from deflating–the positive pressure it provides prevents your airways from collapsing when your muscles relax during sleep.

The machines are made of air compressors that take in ambient air and then compress it to a set pressure. This pressure is measured in centimeter water pressure (cm H2O). A typical CPAP machine can generate between 4-20 cm H2O and a typical therapeutic range is between 6-12 cm H2O.

Your healthcare provider may prescribe CPAP to treat obstructive sleep apnea and other forms of sleep-disordered breathing such as central sleep apnea.