You are right, but what I meant was I have a ventilator which is set to deliver Average Volume Assured Pressure Support AVAPS.
I also augment the air flow with an O2 concentrator delivering 2,5 L per second of Oxygen. So I keep my O2 concentration level above 90 at night. Without the O2, I can.t keep the O2 level above 90% — although my lungs may be getting better — we will look at this each year, since the O2 is an additional hassle at night. I do plan on having the ventilator for several years as it has been very good at letting me sleep soundly and through the night.
i wish you good health and success with your treatment