Central? Obstructive?

[Brewtoo]

   

Hello,

There seems to be a lot of question over whether I have CSA or OSA. I have had several sleep studies.

I do not snore. I appear to sleep very peacefully, even when 02 is gently going up and down from 86 to 96 for a long time.

I have attached a screenshot of 02. This chart is with no machine but I do have ASV ResMed. Does central apnea 02 graph have a "look"?

Thanks!

[Sleepster]

There seems to be a lot of question over whether I have CSA or OSA. I have had several sleep studies.

Can you post the results of that sleep study with your name and personal info redacted?

This chart is with no machine but I do have ASV ResMed. 

Can you post OSCAR charts of a night when you did use your ASV ResMed?

[dataq1]

Both Clear Airway Apneas (what you are calling "central") AND Obstructive apneas will impact your SpO2 levels, so it's a bit of a stretch to try to make a clear choice between the two types of apneas based on 02 levels alone.

That said, It's a bit surprising that the measured saturations vary with almost predictable frequency, at least between 5:47 and 6:23

Are you on a ASV machine and is it "machine triggering" regularly throughout that period?

[Crimson Nape]

The variation appears odd to me. Have you validated your oximeter by testing it on a known healthy person? . . . Not saying that you're unhealthy, but testing on a person with Emphysema would be kind of pointless.

- Red

[Brewtoo]

Both Clear Airway Apneas (what you are calling "central") AND Obstructive apneas will impact your SpO2 levels, so it's a bit of a stretch to try to make a clear choice between the two types of apneas based on 02 levels alone.

That said, It's a bit surprising that the measured saturations vary with almost predictable frequency, at least between 5:47 and 6:23

Are you on a ASV machine and is it "machine triggering" regularly throughout that period?

Thanks for your kind reply. That particular chart is with no machine.

---

The variation appears odd to me.  Have you validated your oximeter by testing it on a known healthy person? . . . Not saying that you're unhealthy, but testing on a person with Emphysema would be kind of pointless.

- Red

Thanks. Yes, I have confirmed the accuracy of the oximeter. And yes it is odd. I guess that's why they've done so many sleep studies.

And it's best on my right side, worse on my left side and worst on my back.