[FRIAM] New information on COVID-19y bb

[thompnickson2 at gmail.com]

Remind me, someone.  Why are we all buying oximeters?  I thought the burden of the Times article was that IF you are sick from a “cold”, don’t wait to test your O2 levels until you EXPERIENCE difficulty breathing, because by then it might be too late.  Do you all have colds?   I suppose, given that it takes Amazon six weeks to get one, you are wise to get a jump on it. 

 

Nick 

 

Nicholas Thompson

Emeritus Professor of Ethology and Psychology

Clark University

 <mailto:ThompNickSon2 at gmail.com> ThompNickSon2 at gmail.com

 <https://wordpress.clarku.edu/nthompson/> https://wordpress.clarku.edu/nthompson/

 

 

From: Friam <friam-bounces at redfish.com> On Behalf Of Roger Critchlow
Sent: Friday, April 24, 2020 9:40 AM
To: The Friday Morning Applied Complexity Coffee Group <friam at redfish.com>
Subject: Re: [FRIAM] New information on COVID-19

 

 

 

On Thu, Apr 23, 2020 at 8:32 PM Roger Critchlow <rec at elf.org <mailto:rec at elf.org> > wrote:

 

I wonder if any of those cell phone pulsimeters could be upgraded to oximeters with some calibration?

 

There are a bunch of cell phone pulse oximeter apps that use the cell phone flash and camera, but I don't get the feeling that they've been calibrated much.  It's a lot easier to write the code, call it entertainment, and reap the ad revenues that to actually determine what the measurement means in the general population.  Some apps have even added some of the other pulse oximeter functions, perfusion, respiratory pleth,   Then, again, https://www.ncbi.nlm.nih.gov/pubmed/2921597 says "Smartphone-based pulse oximetry is not inferior to standard pulse oximetry in pediatric patients without hypoxia. Reliability was superior for PBA compared with CBA, with more precise agreement for the PBA compared with the CBA. Future studies should test pulse oximetry apps in a hypoxic pediatric population."  That was published in 2018.

 

There's an interesting series of press releases from UIUC claiming that measuring someone's gait (with cellphone accelerometers) over a 6 minute walk is enough to get a good estimate of O_2 saturation, because people who aren't getting enough O_2 apparently walk funny.

 

Here's an android app on github, https://github.com/YahyaOdeh/HealthWatcher, with some more method references, the https://github.com/topics/spo2 listing has a bunch of arduino projects, too.

 

-- rec --

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