What is the difference between an auto, bi-level, and a CPAP machine?
A CPAP machine is designed to deliver one constant pressure throughout the night (except during the ramp time). A bi-level or bi-pap machine is designed to deliver two pressures, an inhalation pressure and an exhalation pressure. An auto-titrating machine automatically determines the correct pressure necessary at any given time which tends to reduce the average pressure delivered throughout the night and therefore sometimes results in a higher level of patient compliance.
