Cheyene Stokes event - first ever in 120 nights

[Willgetthere]

Up to 120 nights of Therapy and doing OK. But due to still feeling tired in the day I’ve been working towards finding a fixed pressure that will stabilise my O2. Reason, and might be wrong, but think would feel better with a contant higher O2, say between 9.8-10
 
Problem is despite 4 masks I get significant leaks with each of them regularly
 
Have resisted a full face due to claustrophobia but Friday 25/6/23 used Fisher & Paykel VITERA full face mask

Result ? Very low leaks and a general good outcome (see my report page)
 
But the second night, same settings (Saturday night 26/8/23) a shock outcome 
Woke to see AHI 3.32 – which is higher than its been in ages albeit still under 5 - but when I downloaded Oscar
FIRST TIME EVER  saw significant Cheyene Stokes  event
 
I had a bit harder time adjusting the strap to get a good mask fit, other than that everything was the same
 
Zero alcohol - no Mouth tape  - Caldera RELEAF on
 
I have never in my 120 nights on CPAP- not even during my two sleep studies - ever had one single recording of that before 
 
Am posting my records which are pretty comprehensive and looking back in July I had 9 pretty good nights on APAP as follows
 Settings CPAP fixed 13.2 EPR full time 3,  tube 28 degrees,  hum 4 / should I give up trying to reach an ideal
fixed pressure and go back to this? Outcomes were OK/to good most of the time
 
For sure I not happy about getting Cheyene Stokes anyone know what could have caused this?



   
   

[staceyburke]

It is just a title for periodic breathing.   A cpap machine can NOT identify Cheyene Stroke....  Unless you have a huge amount then no real problem just something to keep notice of.

[Willgetthere]

It is just a title for periodic breathing.   A cpap machine can NOT identify Cheyene Stroke....  Unless you have a huge amount then no real problem just something to keep notice of.

Thanks for that. Views on whether it would be better to stick with fixed that has caused this different event, or go back to the July APAP pressure?