UARS CPAP setting? Help me interpret OSCAR data

[Ejones0310]

Pes. Sounds like a term to add to the glossary.

[zonker]

Thanks I just added my equipment.

thank you.

and yer right about your charts, i just wasn't paying proper attention.

[Pugsy]

was only using mouth tape, not the chin strap. The results show some more mouth leaks.

Was the tape loose at all when you got up in the morning or during the night. If it was...tape more securely so it can't come loose.
If it was still secure and sealed then those leaks are mask movement leaks.

[throwaway08150]

Here's one night with using double the usual tape.

At one point I woke up because of something, disconnected the mask to start breathing through my mouth and then realized it was all taped up. Not sure what was going on there. Maybe acid reflux? (I added a zoom in of that event, and also added the pulse and SpO2 data from my Contec CMS50F)

I also noticed that my mouth is very dry in the morning.





Zoom in:



I'm starting to think that the nasal mask might not be for me.

[throwaway08150]

I slept a couple nights with the full face mask now and the leak rate went down by a lot. However, I noticed AHI and flow limitations went up.

Any suggestions?




Zoomed in:

[Pugsy]

A lot of people who go from a nasal mask to a full face mask find that they need a little more baseline/minimum pressure to hold the airway open. I think it's because of what the lower strap on most full face masks tends to do to the lower jaw. It tends to pull back just a little and alters the airway just a little which can narrow things a bit and then more pressure is needed to keep it more open.

Conversely I have seen people go from a full face mask to a nasal mask and end up using 2 or 3 cm less pressure to get the same job done.

Maybe also a combination of REM and/or supine sleeping and/or a little bit of the airway a bit more narrow.