Cheyne-Stokes percentage, via Oscar

Sorry, but brand new here.
Start with a single question.... per Oscar I have about 13% Cheyne-Stokes on an average night sleep. I researched but can't find if that number is significant. I mean, what is the percentage for a normal person without apnea? Or do all people with apnea have this percent. Or is 13% actually higher than it should be? What is a "high" Cheyne-Stokes percent? As an addendum, almost all my apneas are "central", last night at 14/hour, thanks

Can you please post Oscar results here (see Stickies top of pg) with graphs etc as requested (but no calendar plse) so we can see what's going on - but do them on Imgur.com and leave a link in this thread (the forum attachmt space is full). We'll see what's what and advise here. But it's likely they're not 'real' Cheyne Stokes, but 'clear airway's (other name for centrals) and unless there are lots throughout the night, don't worry about them - it's normal "Sleep-wake junk" as we call it, usually just as you go to sleep and just prior to waking.

Welcome! As Julie says, it'd be helpful to have more information, via a screenshot of an Oscar chart. If you can't post it here directly, you can use a hosting service like Imgur and provide a link.

Also, could you let us know what kind of machine you have and what your settings are? If you put your machine and mask information in your profile, it'll be right there whenever you post.

An index of 14 for central apnea is not normal. Do you know the breakdown of event-types from your sleep study? The basic breakdown would be into obstructive apnea, central apnea, and hypopnea.

The times flagged as "Cheynes-Stokes" may simply be periodic breathing. C-S breathing is a sub-category of periodic breathing. To figure out whether your periodic breathing is actually C-S breathing, it'd be helpful to get a zoomed in shot of your flow rate over an interval of about 15 minutes. Pick an interval in the green area that has a lot of CA flags.

haperlman wrote: ↑

Fri Mar 03, 2023 8:05 am

Sorry, but brand new here.
Start with a single question.... per Oscar I have about 13% Cheyne-Stokes on an average night sleep. I researched but can't find if that number is significant.

Probably not.

haperlman wrote: ↑

Fri Mar 03, 2023 8:05 am

mean, what is the percentage for a normal person without apnea?

zero.

haperlman wrote: ↑

Fri Mar 03, 2023 8:05 am

Or do all people with apnea have this percent.

No

haperlman wrote: ↑

Fri Mar 03, 2023 8:05 am

Or is 13% actually higher than it should be?

Yes, if it's legit, which it's almost certainly not.

haperlman wrote: ↑

Fri Mar 03, 2023 8:05 am

What is a "high" Cheyne-Stokes percent?

much more than that.

haperlman wrote: ↑

Fri Mar 03, 2023 8:05 am

As an addendum, almost all my apneas are "central", last night at 14/hour, thanks

Probably caused by extra ventilation caused by pressure relief.

For the first time in 15 years, that I'm aware, Cheyne Stokes events appeared on an OSCAR report. That night I also was wakened by the mask fluttering on my face several times. I wonder if that fluttering action caused OSCAR to indicate the CS events.

ejbpesca wrote: ↑

Sun Mar 05, 2023 10:41 am

For the first time in 15 years, that I'm aware, Cheyne Stokes events appeared on an OSCAR report. That night I also was wakened by the mask fluttering on my face several times. I wonder if that fluttering action caused OSCAR to indicate the CS events.

CSR is a slow process, happening over a period of a number of breaths, with no breathing for a bit in between each waxing and waning.

Resmed is too eager to flag things as CSR when they're not really CSR.

But, no, mask 'fluttering' would not cause the periodic breathing that might be flagged.