Bilevel therapy

While CPAP (Continuous Positive Airway Pressure) therapy delivers air at one fixed pressure, bilevel therapy delivers two different levels of pressure: • a higher level of pressure when you breathe in; and • a lower level of pressure when you breathe out. This makes it a little easier to breathe out against the air pressure. ResMed's bilevel therapy is delivered in our VPAP range of devices. See also: VPAP; CPAP