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+--- Thread: Need help with minimizing flowlimitations (/Thread-Need-help-with-minimizing-flowlimitations)
Need help with minimizing flowlimitations - Søvnig - 10-31-2024
Could anyone help me decipher what is going on in my OSCAR-charts? They differ very much from night to night. Some nights (not so many, unfortunately) they look fine (to me, at least). But most nights they look very "messy". Not so many apnoes, but many, many flowlimitations.
In periods I feel a kind of light, brief "blocking", mostly during inhalalation, but also sometimes during expiration. It is annoying and disturbs my sleep. I never experience this without the APAP, so I don't think it is apnoes, but caused by the machine. But they seem to make the pressure immidiately go up - see the end of the night in the screenshot. What could cause these light blockages?
Sometimes my breathing seems to get into a kind of "fight" with the pressure - as if they are out of sync.
I have been on APAP for 4 months, but I'm still tired, although it has helped me some.
I sleep almost only on my right side. Started at this at the same time as the APAP (AHI 16), and it has reduced the apnoes to almost none. Could I still benefit from a soft servical collar?
CPAP Pressure 6-11 (haven't figured out how to edit my profile yet.)
[attachment=71382]
RE: Need help with minimizing flowlimitations - PeaceLoveAndPizza - 10-31-2024
First, please read the link in my signature “Formatting OSCAR Charts”. Those are the charts we want to see as well as the entire left-hand table. With all the flags available on the Löwnestein, it takes up a lot of screen real estate, so if you need to add a second image just of the left-hand table that is fine.
As we cannot see all the settings or charts, the best we can do is take a SWAG and recommend more pressure. Try something like
Mode APAP
Min pressure 8
Max pressure 15
SoftPAP 3
No ramp
Getting more pressure support via SoftPAP should help with the flow limitations that are causing the pressure to rise, but the dynamic nature of the Löwenstein algorithm makes it difficult to guess how it will work. It works well for most, but is a bit difficult to know what its magic is under-the-hood.
RE: Need help with minimizing flowlimitations - Søvnig - 10-31-2024
Thank you so much for your suggestions. I have added the charts from an other bad night, and a 2 min "zoom in" at one of the apnoes.
My settings are done from a hospital sleep clinic (telemedicin), who have also decided the Löwenstein, so I will have to negotiate your suggestions about pressure with them. Unfortunately they are quite "old fashioned" - according to them my apnoe is absolutely well regulated, as the AHI and leak percentage are so low. Flow limitations (and OSCAR) seems to be unknown, and considered absolutely irrelevant, even though it disturbs sleep considerably (no deep sleep), so it will probably take some days, before I hopefully have convinced them to try your suggestions.
If you have any other thoughts about the new charts, please share.
[attachment=71386][attachment=71387][attachment=71388]
2 more charts in the next post.
2 more charts to my post above.
[attachment=71389][attachment=71390]
RE: Need help with minimizing flowlimitations - Jay51 - 10-31-2024
Here is a great article in our wiki about optimizing the Lowenstein: 1OSCAR Optimisation for Lowenstein
RE: Need help with minimizing flowlimitations - Søvnig - 11-01-2024
Thank you very much, Jay51.