Thank you, Frank, I stand corrected. -- rec --
On Fri, May 1, 2020 at 10:50 AM Frank Wimberly <wimber...@gmail.com> wrote: > Roger, > > It's Coumadin not Heparin that's used as rat poison. I've taken both. > Thank God, I'm not a rat in that sense. > > On Fri, May 1, 2020 at 8:43 AM Roger Critchlow <r...@elf.org> wrote: > >> An "In Depth" appears in Science online today, >> https://science.sciencemag.org/content/368/6490/455, titled "The mystery >> of the pandemic's ‘happy hypoxia’". It mentions the NYTimes OpEd in >> passing. >> >> One suggestion is that the blood is clotting in the lung capillaries, >> which interferes with O2 transport by red blood cells while allowing the >> plain gas transport of CO2 to continue as normal, hence hypoxic but venting >> CO2 normally and not feeling in the least breathless. 24 of 27 hypoxic >> patients treated with heparin (a blood thinner also used as a rat poison) >> recovered well, 2 are still critical, and 1 was transferred to another >> hospital. That's a good preliminary result. >> >> -- rec -- >> >> On Fri, Apr 24, 2020 at 11:40 AM Roger Critchlow <r...@elf.org> wrote: >> >>> >>> >>> On Thu, Apr 23, 2020 at 8:32 PM Roger Critchlow <r...@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 -- >>> >> .-. .- -. -.. --- -- -..-. -.. --- - ... -..-. .- -. -.. -..-. -.. .- ... >> .... . ... >> FRIAM Applied Complexity Group listserv >> Zoom Fridays 9:30a-12p Mtn GMT-6 bit.ly/virtualfriam >> unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com >> archives: http://friam.471366.n2.nabble.com/ >> FRIAM-COMIC http://friam-comic.blogspot.com/ >> > > > -- > Frank Wimberly > 140 Calle Ojo Feliz > Santa Fe, NM 87505 > 505 670-9918 > .-. .- -. -.. --- -- -..-. -.. --- - ... -..-. .- -. -.. -..-. -.. .- ... > .... . ... > FRIAM Applied Complexity Group listserv > Zoom Fridays 9:30a-12p Mtn GMT-6 bit.ly/virtualfriam > unsubscribe http://redfish.com/mailman/listinfo/friam_redfish.com > archives: http://friam.471366.n2.nabble.com/ > FRIAM-COMIC http://friam-comic.blogspot.com/ >
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