Similar to a CPAP machine, A BiPAP machine is a non-invasive form of therapy for patients suffering from sleep apnea. Both machine types deliver pressurized air through a mask to the patient's airways. The air pressure keeps the throat muscles from collapsing and reducing obstructions by acting as a splint. Both CPAP and BiPAP machines allow patients to breathe easily and regularly throughout the night.
The main difference between BiPAP and CPAP machines is that BiPAP machines have two pressure settings: the prescribed pressure for inhalation (ipap), and a lower pressure for exhalation (epap). The dual settings can allow a higher pressure if needed during inhalation and eased exhalation pressure to make it easier to breathe out.