The length of time will vary among patients (Just like training wheels on a bike). Over weeks (or months), patients develop tolerance to the peak flows and pressures of PAP therapy. Once a patient can easily tolerate the peak flows and pressures of PAP therapy, the V̇-Com device may be removed from the circuit. However, since beginning short trials with long-term PAP users we are finding many participants wish to keep and use their V̇-Com indefinitely. V̇-Com not only reduces inspiratory pressure and thus flow, but it “softens” the inspiratory flow curve and many patients are preferring that experience. As will be explained later, V̇-Com also appears to decrease unintentional leak and mouth openings which also improves the experience and possibly the therapy. There are also numerous reports that V̇-Com reduces the noise from the device which has led to bedpartners requesting the V̇-Com in the circuit.