I am 65 and I have had central sleep apnea all my life. I cannot handle CPAP. I am using an oxygen concentrator as a substitute. It makes things better but ......
I have a Perfecto 2 on rental which I use only at night. 2.5 liters. I was thinking of buying a used concentrator on Craigslist. Hopefully one that isn't so big. What can go wrong with doing that?
If it doesn't work right then I just sleep poorly so I don't need alarms or notifications.
Thanking you in advance.