Hello Guest, Welcome to Apnea Board !
As a guest, you are limited to certain areas of the board and there are some features you can't use.
To post a message, you must create a free account using a valid email address.

or Create an Account

New Posts   Today's Posts

Took a turn for the worst. Please help with OSCAR Charts
RE: Took a turn for the worst. Please help with OSCAR Charts
Here is a bit of info to understand what is happening.

EPR creates a pressure differential that increases air flow during both inhale and exhale. The higher EPR is, the higher the flow which evacuates CO2 from your lungs (and then blood) more efficiently. CO2 is what drives respiration and if your CO2 levels drop then your body thinks it doesn't need to breath so it takes a break until your CO2 level rises again and then body realizes it has to breath again. This causes the cyclical nature you see in flow rate graph (taking a break from breathing during central apnea, recovery breaths to evacuate CO2 and then another break in breathing, rinse and repeat).

In your last example posted you can see the flagged central apneas from 7-7:20 and you can also see similar periodic breathing that is central in nature but without triggering apnea flags at other times like 1:20 and 5:50.

Did you have any central apnea during your sleep study?
Post Reply Post Reply

Donate to Apnea Board  
RE: Took a turn for the worst. Please help with OSCAR Charts
Excuse my absence as I have been working on a congestion/swelling/stuffy nose issue in another thread. That problem is still a work in progress but wanted to circle back to this issue as I discovered something but don't know what could be causing it.

I am using a ResMed N30i mask with decent results but it isn't as comfortable as I would like. ResMed came out with an upgraded cushion for the N30i with is MUCH more comfortable and maintains a great seal. I really like the way it feels.

Unfortunately with the updated cushion I get much higher AHI than when I switch back to the old version. Any idea why the cushion could be causing my AHI to be so high?

Attached Files Thumbnail(s)
Post Reply Post Reply
RE: Took a turn for the worst. Please help with OSCAR Charts
It could be related to how the air flow is delivered by the mask. I haven't seen too much about this on forums or studies but a sleep tech I talked to one day was telling me how the direct air flow from nasal pillow masks can cause a negative reaction in some people sensitive to air flow directed into nose. She convinced me to try a nasal mask since it is more like taking a natural breath in and can cause fewer issues. I never could get a nasal mask to seal well though.

Edit: Since you seem to have a potential form of CPAP causing rhinitis I wonder if this has even more merit then I first thought.

I am curious.

A) Do you find the congestion is any better or worse with this different mask?

B) Do you notice any correlation with congestion and central apnea (for example worse congestion = fewer centrals)?
Post Reply Post Reply
RE: Took a turn for the worst. Please help with OSCAR Charts
Hi Geer1,

No correlation with the congestion and higher centrals that I can find. Last night I had a really good night congestion wise after a decent day without a lot of swelling and congestion. I decided to try the new updated N30i cushion again. I was saddened to see a high increase in centrals just by switching out the cushion. The last time I tried the updated cushion I had high centrals as well.

I seemed to think the nasal mask felt a bit better congestion wise but I also couldn't get it to seal properly and fought it all night long so it kept waking me up more than usual. I've have the best luck with the nasal cushion masks as far as comfort and sealing.
Post Reply Post Reply

Donate to Apnea Board  
RE: Took a turn for the worst. Please help with OSCAR Charts
It could also be good sleep vs bad sleep. I had trouble with the N30i mask/vent noise.

Flipping through your data posted again it appears like some of your better days were actually initial posts when you were still using EPR. Has your AHI been obviously better with EPR off (easy way to tell is looking at statistics tab in OSCAR)?
Post Reply Post Reply

Possibly Related Threads...
Thread Author Replies Views Last Post
  How to Turn Off Heating on the ResMed AirSense 10 CPAP Machine jennie54 5 193 09-13-2021, 12:40 PM
Last Post: Big Guy
  ResMed AirSense10 For Her -- turn it off? Quandry63 3 252 08-29-2021, 12:35 PM
Last Post: Dormeo
  Newbie's charts ally1114 8 250 08-26-2021, 02:49 PM
Last Post: SarcasticDave94
  Can I Get Someone to Look at My Wife's Charts mawaw1992 12 728 07-01-2021, 03:10 PM
Last Post: SarcasticDave94
  Philips Dreamstation difficult to turn off fedupbeingafatlady 5 264 06-01-2021, 01:00 PM
Last Post: Ratchick
  Need help reading my charts Rich66 39 1,238 03-28-2021, 09:03 AM
Last Post: Rich66
  Did my machine turn off in the middle of the night? HosedPrincess 16 770 03-05-2021, 10:30 AM
Last Post: Sleeprider

New Posts   Today's Posts

About Apnea Board

Apnea Board is an educational web site designed to empower Sleep Apnea patients.