OSCAR Data vs Lookee O2 Ring

[cmpman1974]

I was going to wait to comment when you got back.  I'm not impressed with the result.  Your over night sats were well below normal.  And thats important.  For most of that data collection period you spent it between 93 and 88, with 6m under 90. You dont even want to be at 88% for longer than a minute as it stresses heart and lungs. Overnight O2 is very important to collect along with CPAP data.  Thats why its collected in a sleep study.  In this case, It also confirms if your treatment is working and its not.

More could be analyzed if you gave me the raw data so I could graph it.  The data you provided is very limited to just O2 ranges you were overnight, not how it overall looks, clusters etc.Also give me your AHI for that data range.

I dont have extensive experience with CPAP treatment and sleep machine data like others here do, and whether CPAP titration would solve your lousy O2 sats.  I do know O2 very well, and those numbers are lousy.  With healthy lungs, you should be at least 95% overnight, at least that, and you werent above 93% much at all.  If I had numbers like that, I'd be upping my own O2 levels, but then I did just that going from 2L > 4L to make those hypopneas not so bad.  Note I'm not suggesting that, just giving what I did, and why.  Prior to the apneas showing up, I used 2L overnight and maintained a rock steady 95% in O2 oximetry.  Again noting I have fibrosis from covid pneumonia, but the scarring is reversing from CHinese herbals.

I'd be curious to hear from the sleep experts here whether titration would solve this.  Personally, I'm dubious, but then I've havent seen it graphed yet either.  Thats the decision maker from me.

Best of everything to you.  I hope it gets solved because those arent good numbers and most likely why you feel like crap in the morning.

Also note I have damaged lungs, am running 10/4 BiPAP and my numbers are way better than yours.

Here is the raw data file you were inquiring about showing O2 stats every 4 seconds from recording time. I am not sure the OSCAR data correlates perfectly with the O2 results as the apneas/hypopneas were pretty minimal on the ST-A machine (AHI 0.42 per hr). However, my video feed showed an apnea event without a doubt at 6:15 AM. I could see I was sleeping on my side and got woken up out of my sleep and tried to gasp air in. Scary to see. I really wish I was able to pull the O2 data side by side into OSCAR, but my unit doesn't seem to import data as it gets it via Bluetooth. I can see how much more useful the ResMed oximetry tool would be, but the cost is absurd.

[jeffpack1957]

One last thing... Never listen to a doctor that tells you, you cant get back. 1.25 years ago I almost died from a post Covid PE. They told me my lung scarring was so bad I'd be on O2 the rest of my life. They were wrong. Prove your doctors wrong too.

[jeffpack1957]

Ok, that is a very curious chart, I'll be tied up a few hours here, but its a strange strange chart. I'm told you can import that data into OScar, but I dont know how to.

[Sleeprider]

A quick observation. Your ST-A was at a consistent EPAP 10, IPAP 15, but the Vauto in S-mode was set to EPAP 8, IPAP 16. The EPAP was lower, and that may have allowed more obstructive events. PS 8.0 is too high, and I really don't understand how you possibly arrived at these settings. If you wanted to see something equivalent, why not EPAP 10, IPAP 15, or better yet, use Vauto mode with EPAP 10, IPAP 20 and PS 5? Finally, why did you abandon you therapy thread and start this? I did not follow the Lookee ring because I have nothing to offer about it, but you have strayed from what was working in your therapy.

[cmpman1974]

A quick observation. Your ST-A was at a consistent EPAP 10, IPAP 15, but the Vauto in S-mode was set to EPAP 8, IPAP 16.  The EPAP was lower, and that may have allowed more obstructive events. PS 8.0 is too high, and I really don't  understand how you possibly arrived at these settings. If you wanted to see something equivalent, why not EPAP 10, IPAP 15, or better yet, use Vauto mode with EPAP 10, IPAP 20 and PS 5?  Finally, why did you abandon you therapy thread and start this? I did not follow the Lookee ring because I have nothing to offer about it, but you have strayed from what was working in your therapy.

Sleeprider, it was not me who arrived at the settings.  My sleep doctor was the one who set the VAuto machine settings before.  This was the machine I had prior to the ST-A.  I was going back to my old machine until I had my appt with the new sleep medicine physician today.  Moving forward, I will use the ST-A machine until further determination is made.  It is obvious the AHI is better controlled with the ST-A or possibly due to the settings alone on the ST-A and not because of IVAPS? Either way, I'll keep using it until I get the new polysomnogram so the doc can determine where to go. The BPAP Vauto is causing too many apnea events at the 16/8 pressure prescribed in the past.

I made this thread primarily to focus on the O2 desaturations shown on the Lookee device and see how realistic they are.  I'm trying to connect dots.  

In the end, I truly want to know if my O2 levels are hitting acceptable ranges and it doesn't seem to be the case IF these devices are valid. 

My sleep doc had always used a PS settings of 8 to 10 in the past.  Titrated settings have ranged from 16/8, 17/9, 21/11, 24/14, etc.  Never closer together than 8.0 cm between IPAP/EPAP.  BPAP machines do not have a set PS figure, just solid EPAP/IPAP numbers.  Whole different game with the ST-A.

[jeffpack1957]

A quick observation. Your ST-A was at a consistent EPAP 10, IPAP 15, but the Vauto in S-mode was set to EPAP 8, IPAP 16.  The EPAP was lower, and that may have allowed more obstructive events. PS 8.0 is too high, and I really don't  understand how you possibly arrived at these settings. If you wanted to see something equivalent, why not EPAP 10, IPAP 15, or better yet, use Vauto mode with EPAP 10, IPAP 20 and PS 5?  Finally, why did you abandon you therapy thread and start this? I did not follow the Lookee ring because I have nothing to offer about it, but you have strayed from what was working in your therapy.

You might want to look at his HR and O2.  It scary bad.  His HR range in the 40's and 50's (unless he's an Olympic Athlete) with corresponding low O2.  If  I was looking only at his O2, I'd suggest supplemental O2, but along with abnormally low HR, I cant see in my experience how PAP treatment will fix it.  To me it appears cardiac oriented, but you have way more experience in Sleep diagnosis than I do, so I'll defer to you. Now this all assumes hes using the Ring correctly with a good perfusion index. Ir so they are pretty accurate, I have the wrist/thumb unit, but its the same sensor and code. Its as accurate and actually reacts faster than the Masimo Oximeters I use.

[jeffpack1957]

What do your daytime O2/HR values look like?  Is your HR that low during daytime also, etc?

[cmpman1974]

What do your daytime O2/HR values look like?  Is your HR that low during daytime also, etc?

Daytime O2 jumps between 91 and 96, probably avg of 93-94.  My daytime pulse rate was running mid to high 50s, but did reach high 40s at times.  55-57 was quite common sitting. I have no reason to have a low pulse rate as I'm quite overweight and not in excellent physical condition.  I am on a beta blocker and have been for years though.  My pulse rate dropped to 48 a few weeks ago mid-day.  All heart testing has been pretty much normal.  

It seems like things really go south at night based on these reports.  There is no way the continuous monitor is falling off or getting loose mid-night.  It's a perfect fit on my small finger.  My sleep specialist seemed to have no trust in any of these devices, but to be fair he didn't even take a minute to look at it.  He didn't know the name of the device or how it worked.  I would've liked to hear what is considered 'credible' so I could rule out the issue.  Ordering an overnight O2 study ASAP seemed like a reasonable move given what was presented. I guess not.  At the end of the day/night, all I truly want to know is if I'm hurting myself de-saturating to unacceaptable levels night after night.  I am so tired of having low grade headaches and fogginess every day on end.

Another night of very low AHI numbers with the ST-A.  Still wake up with headaches and other stuff.  Leak rates were higher than I want, but better than before still.

[jeffpack1957]

uh wait, you said small finger?  Its only to go on pointer finger or thumb.  Have you verified the perfusion index, or at least spot checked it against another oximeter?

BTW, lungs shut down to an extent overnight, which for example is why I need O2 overnight, but not during the day.,

[Dormeo]

Oh, I hope a change of finger -- or oximeter -- will paint a rosier picture.