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Please help me interpret my data. What could cause low O2?
#11
RE: Please help me interpret my data. What could cause low O2?
Good morning Stacey,

Far fewer central apneas last night! Still have a lot of flow limitation and lower oxygen than I'd like: min of 87%, average of 93%, spent about 60% of the time above 92%SpO2.

I had a couple beers last night which I know does not help. I don't drink often, will be curious how these settings work long-term.

I may up the max pressure slightly as I was sitting at 12.0 for a fair bit of time last night.

Will also try wearing something to force me to lay on my side.

The screenshots below look a little different because I took a 30 minute nap (using the CPAP) in the afternoon. Thus the large gap between the initial data and the bulk of it.

O2 during the 30 minute nap was great: min of 93%. Flow limitation also seems to be lower, which I'm assuming means my airway hadn't yet started to relapse/collapse given that I wasn't really unconscious.

Does my leak rate (second screenshot) seem OK to you? I'm not sure what a "good" or "bad" level is there.

As always, thank you so much for your help. It's confusing/scary trying to navigate this stuff alone and I really appreciate your input.

- Murph

   
   
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#12
RE: Please help me interpret my data. What could cause low O2?
Show us the detail on your O2 levels preferably overlayed on your OSCAR charts. How long were you at or below 88% as that is considered by many to be a very important measurement? Mon O2 levels only say to look deeper, and by themselves mean very little.
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#13
RE: Please help me interpret my data. What could cause low O2?
I'm not sure how to get my O2 data into OSCAR. I use an Emay pulse oximeter that syncs the data to my phone via bluetooth.

That said, last night when I went under 88% it was only for a few seconds at a time. My worst period of oxygenation was just over 5 minutes spent oscillating between 89% and 90%.

From what I can tell, this 5 minute period was about 3 hours into the night, just prior to the a big increase in flow limitation.

I've had nights with extended periods under 88% (45+ minutes), but those were using far lower pressure settings and before I started importing data into OSCAR.
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#14
RE: Please help me interpret my data. What could cause low O2?
I'm not aware of the Emay pulse oximeter. Does it produce a binary, or any file that contains the data? Not to get your hopes up, because even if it does produce one, someone is going to have to see if it can be parsed and programmed into OSCAR.
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#15
RE: Please help me interpret my data. What could cause low O2?
It makes a CSV file with the raw data available, here's a link to the product: https://www.emaycare.com/products/sleepo...en-monitor
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#16
RE: Please help me interpret my data. What could cause low O2?
Then post a copy of your O2 data chart with a timeline so we can match things up. Because you are asking about oxygen levels post everything you can except the raw data from your oximeter..
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#17
RE: Please help me interpret my data. What could cause low O2?
Hi all,

Apologies for the delay, have been closing on a house and as a result running around like a crazy person the last few days.

Here is my OSCAR data and O2 report from last night. I still have periods of time spent pinned at my max pressure with high flow limitation.

It looks like I have incorrectly set my time zone in OSCAR, so it is one hour off from the oximeter report. But I always start using my CPAP and oximeter at the same time, so 10:30PM on the oximeter data corresponds to 21:30 on the OSCAR data.

I'll update my OSCAR time zone.

I am thinking that getting my deviated septum fixed may be helpful here, because it seems that regardless of the max pressure the CPAP is unable to reduce the flow limitations.

It could also be that if I can solve these flow limitations I don't need as much pressure, which would be great because I do get aerophagia and central apneas sometimes.

Dan



   

.pdf   EMAY SpO2-20220809-221912.pdf (Size: 409.31 KB / Downloads: 3)
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