He said he went from one Bi-pap machine to the next generation bi-pap and feels worse.The Latinist wrote:The reason people don't want to answer the questions as you asked them is that you're asking the wrong questions. Your therapy is objectively working. It's extremely unlikely that there's anything wrong with your machine. And it's very unlikely that going from a CPAP to a BiPAP machine would cause the problems you describe. Whatever issues you're having with your energy, etc., it they do not seem to be due to apnea since you aren't having apnea with your machine. Instead of trying to fix something that's not broken, perhaps you should talk to your doctor about other things that might be causing your fatigue and lapses in concentration. A good place to start is always with sleep hygiene.
It's possible he is not using the same settings he was previously using with the older Bi-pap.
The algorithm may be different in the newer model and may be part of the problem.
did the inhale pressure and exhale pressure values change between the old and new machine?
The sleepyhead chart posted looked good.
The OP after all these years of treatment should have a backup machine or two to try.
If not I would get a backup machine right away.
Many DR will send you for a sleep study and then prescribe a machine based on those results.
They are not all board certified Sleep medicine specialists.
if your having problems like reported it's time to find a board certified sleep specialist to look at your situation.