Way Too many events and Cheyne Stokes

I've been trying to use the cpap daily and I found I can only tolerate it on a 4cm water pressure noise level. I know i'm crazy but I am extremely sensitive to noise, and past sleep studies have alluded that sleep onset is almost non existent when air conditioning noise is on. That's how sensitive I am. In any case, I am having what appears too many events for Apap mode but I'm kind of reluctant to use higher pressures. All that aside, my AHI is now out of normal index on the machine and I keep noticing Cheyne Stokes events. I got really concerned and ask if I could use a ASV. My doctor just said the machine is not sensitive enough to pick up Cheyne Stokes and that I don't need a ASV.



Is he right.. Should I be concerned about the Cheyne stokes flags? I have what appears to be two events, one lasting for 2 minutes.

Also any analysis on my data would be helpful on how I can optimize my cpap experience without having to use a fixed pressure

To save me from having to repeat what I have said many time before please read what I said in this thread
viewtopic.php?f=1&t=107873&p=1028855&hi ... g#p1028855
all the comments I made about CSR and periodic breathing.

To reduce the OAs, hyponeas and flow limitations you are seeing...you are going to need more than 4 cm minimum pressure. The machine can't respond quickly enough from 4 cm to do a good job. It needs a little better starting off point.

You don't come anywhere close to remotely needing ASV which you wouldn't like anyway because of the pressures it uses. If you did have centrals that required therapy we are talking pressures into the 20s with big pressure swings that are fast.

Thats' reassuring Pugsy. yes I remember you mentioned Sleepyhead doesnt accurately pick up true Cheyne Stokes. I am glad to hear you think I definitely dont need ASV. That would be dreadful. Sorry I am such a worry wort. I have a tendency to want to seek reconfirmation. I apologize if I broke any rules.

It's best if you don't refer to those events as Cheyne Stokes in any case... they're generally assumed to be much more serious and it may just confuse others here.

No need to apologize for anything.
I just wish I had a dollar for every time I gave the "it's not CSR" speech. I could buy several masks with the dollars. Future versions of SH are supposed to be calling it Periodic Breathing which is what Encore would call it. While CSR is a form of Periodic Breathing it isn't the only form of PB.

Even if it was really CSR there's not nearly enough of it to warrant concern.

This is what CSR really looks like and I am pretty sure that your flow rate looks nothing like this if you zoomed in on it. This person has real CSR and enough of it that there is concern and these were actually centrals instead of OAs and this person does have heart issues to boot.

Thanks for the reassurance again. The Cheyne Stokes flags are not as dramatic as the example you showed me. I was a bit concerned because it shows up quite consistently and I do recall my sleep study showing only central apneas but because my AHI was made up mostly of hypopneas, the doctor dismissed my concerns. I have also complained about heart problems to my doctor, and was told even though I have a high resting heart rate, my rhythm is normal. I have a tendency to freak out about my doctors overlooking my symptoms as it has happened a few times in the past.

I don't know how much reassurance you are looking for....experienced members have told you not to worry about Cheyne Strokes and your doctors have told you the same. I'm hearing a little anxiety mixed in with your other symptoms.