Pulse Oximeters Oscar

I have killed off my old CMS50I Oximeters (2) with old age, theirs not mine. I am still a youngster.
I am lookin at the nice cheap recording oximeters a t Amazon, EMAY Sleep Oxygen Monitor with App for iPhone & Android | Track Overnight & Continuous Blood Oxygen Saturation Level & Heart Rate with Professional Report | Memory Stores Data Up to 40 Hours.
I was hopping Oscar has become friendly with one or more of these new inexpensive devices.
A year ago I bought a Samsung SMART WATCH which was supposed to include SPO2. It does, but it is a bad joke.
I am trying to convince my wife she needs a PAP, she is somewhat reluctant to get tested. Maybe a finger SPO2 unit will be a place to start.
I am also having some issues and would like to start tracking again.

List of OSCAR compatible oximeters:

https://www.apneaboard.com/wiki/index.p ... _Oximeters

While it is a fine idea to be able to sync your oximeter with your Oscar file, one thing to keep in mind is the responsiveness of pulse ox monitors to actual respiratory events.
It seems that there is a significant lag time - I’ve seen lags from 30 to 45 seconds - between apnea onset and first indication of lower blood O2. And then blood O2 will continue to drop even after restoration of breathing.
So the point is that there is no need to closely coordinate or sync Oscar reported respiratory events with pluseox reports.

That is not to say that comparing respiratory events with resultant O2 depressions is useless, but trying to sync on a moment by moment - in a very dynamic system- is fraught with fraught with potential problems.

** try googling ‘ oximeter responsiveness to breath holding’ there are several videos that demonstrate this time lag.

Don't know about compatibility, but seems like they get less expensive every day:

https://a.co/d/4Qzx1wN

lazarus wrote: ↑

Thu Aug 31, 2023 11:29 am

Don't know about compatibility, but seems like they get less expensive every day:

https://a.co/d/4Qzx1wN

There are two basic kinds of pulse-oximeters--spot, and recording.
Unless it is continually connected, the $14.95 spot meter will not work overnight.
Most recording oximeters are at least $100.
Keep looking.

I am well aware of the difference between Spot and recording.
I was surprised to see recording oximeters for $49.99 at Amazon. I am not convinced of their value since the same brand offers a different model for $219.

chunkyfrog wrote: ↑

Thu Aug 31, 2023 12:24 pm

lazarus wrote: ↑

Thu Aug 31, 2023 11:29 am

Don't know about compatibility, but seems like they get less expensive every day:

https://a.co/d/4Qzx1wN

There are two basic kinds of pulse-oximeters--spot, and recording.
Unless it is continually connected, the $14.95 spot meter will not work overnight.
Most recording oximeters are at least $100.
Keep looking.

The device connects to an app on your phone with Bluetooth so that your phone can record the overnight report. As the description in the link says:

"Automatically receive data from the blood oxygen monitor and store the received data (only recorded when the app is running). And view real-time data, graphical reports, O2 reading and heart rate trends, both iOS and Android supported."

So as long as your phone is on and the app is running, it IS 'continually connected' overnight, as I understand it.

It is a new era in cheap Chinese technology these days.

The $50 one I use (which has a built in memory so the phone app doesn't have to run all night) and have had good success with is this one:

EMAY Sleep Oxygen Monitor with App for iPhone & Android | Track Overnight & Continuous Blood Oxygen Saturation Level & Heart Rate with Professional Report | Memory Stores Data Up to 40 Hours https://a.co/d/3N4V3nw

I don't use OSCAR, myself, though (since I'm lazy and having no therapy issues), so I don't know about compatibility.

dataq1 wrote: ↑

Thu Aug 31, 2023 7:44 am

one thing to keep in mind is the responsiveness of pulse ox monitors to actual respiratory events.

You are confusing the responsiveness of measuring equipment to the actual delay in blood-ox dropping. In this study, it took 24 seconds for blood-ox to drop to 92% from 98%.

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5775202/

lazarus wrote: ↑

Thu Aug 31, 2023 12:59 pm

The $50 one I use (which has a built in memory so the phone app doesn't have to run all night) and have had good success with is this one:
EMAY Sleep Oxygen Monitor .....

That's the EMAY-80
Did you realize that the graph (shown on your phone) can be printed out in a formal form, but more significantly all the individual readings (once per sec) can be downloaded in a comma separated values file (.CSV)?
From there it's easy to import to EXCEL and perform calculations and math functions to examine (for example O2 variability, or pulse rate variability on a second by second basis. All kinds of ways to look at the data stream.

So, doable.
I gather the sampling rate is reasonable?

chunkyfrog wrote: ↑

Thu Aug 31, 2023 5:47 pm

So, doable.
I gather the sampling rate is reasonable?

The RECORDING rate on the EMAY-80 is once per second, the sampling rate has to be at least that frequent.

chunkyfrog wrote: ↑

Thu Aug 31, 2023 5:47 pm

So, doable.
I gather the sampling rate is reasonable?

"Records your blood oxygen and pulse rate EVERY SECOND without interval . . . Free iOS/Android App: 1. Review historical & granular data second by second; 2. Sleep report with detailed analysis & trends of your overnight blood oxygen and heart rate; 3. Export CSV file of data list for further analysis or sharing."--https://www.emaycare.com/products/emo-8 ... itor-white

bwexler wrote: ↑

Wed Aug 30, 2023 3:33 pm

trying to convince my wife she needs a PAP, she is somewhat reluctant to get tested. Maybe a finger SPO2 unit will be a place to start

Yes and no.

An oximeter can prove someone likely needs PAP but can't prove someone doesn't need it. It is possible for great benefit to come to someone from PAP even though the person may not have sustained desaturations. PAP can stabilize the airway in a way that greatly improves the quality of sleep either way.

Since oximetry may not reveal many cases of apnea,
you might consider having her take the Epworth test, or a similar online quiz.

I was lucky enough to have significant desats when I was given an initial overnight SPO2 test to prequalify me for a sleep study.
The sleep study only indicated mild apnea with an AHI of 83.
After years of "gently prodding" I have convinced her to get tested. The doc has summited for approval of a sleep test. Then I showed her the sleep test cartoon.