How does PAP or CPAP sleep apnea therapy work?

A CPAP system is comprised of three basic components:

A machine that acts as an air pump;
A mask that covers the nostrils and sometimes the mouth; and
A tube that connects the machine to the mask and facilitates the transfer of pressurised air to the patient

The pump blows air pressure, which then travels through the tubing and mask and into the throat. CPAP helps treat sleep apnea by maintaining this flow of pressurised air. The pressure of the air keeps the throat open while you asleep, helping prevent or reduce apneas from occurring.