AS11 Pulsing

I have read all the topics I can find on this issue of the CPAP unit pulsing. I experience a definite pulsing when awake, especially after a bathroom break. It looks as if I have some erratic, periodic breathing just before I go back to sleep and the machine software attempts to respond because EPR is on. I've seen some CSR in this period a few times. I interpret the mask pulses (circled) in the graph as the pulsing I am feeling. The peak mask pressure at the first pulse is 20 the second is 17.66. This wakes me up and the cycle repeats making getting back to sleep difficult. The pulsing feed upon itself and I then breath even more erratically



My pressure is 11-17. A pressure of 11-12 reduces my OA's and max of 17 limits the leaks ... sometimes. I have tried 8,9,10 but my AHI (both H and OA increase to above 5 from about 1-2). Based upon my reading of other posts, I am reducing the EPR 1 pressure point for 3 nights (repeat) until the pulsing goes away. Does this appear to be a reasonable interpretation and approach

It could be FOT.
Look it up, and don't freak out.
The algorithm that triggers it may be a bit over-sensitive.
Better than not being sensitive enough.

I doubt it is FOT.
FOT will show up on the flow rate graphs and I just don't see it it in the shared example.

So, the odd-looking pattern is what?
Nature being random?

I reduced pressure to 11-16 and EPR to 2 and for the last two nights the pulsing has stopped. At least, not that I perceive them. How can the mask pressure go so high?



expanded



only two OA.

The masks are designed to go to 20+cmH2O

Eddy wrote: ↑

Wed Jun 21, 2023 9:57 am

How can the mask pressure go so high?

Eddy wrote: ↑

Wed Jun 21, 2023 9:57 am

only two OA.

Your mask was in Large Leak for 43% of the night. The data is probably inaccurate.

You need to fix the mask leak. Find that mask on youtube and carefully watch some videos on fitting and adjusting.

Oh, the 43% time in LL is accurate. But, the other data may not be due to the large leak.