And I will answer in sincerity 😀
I’m a dialysis patient (Haemodialysis), 3 times a week. My blood is tested for Hemeglobin 3x a week (every dialysis) and when it falls too low, I am given Erythropoetin, a Hemeglobin production stimulating hormone. I track my SPO2 levels and they show/display an oscillating pattern via the Apple Watch data; higher immediately after getting the drug and lower as time passes (it’s generally lowest immediately before getting the drug).
I use Heartwatch, a paid app that integrates bpm, SPO2 and a plethora of other data; both in waking/sleeping mode, er state.
Here is a screen capture of today, the yellow tick marks being when I received the EPO. I bet when I go in tomorrow I’m gonna get the drug.
Here is some data displaying sleeping respiration date. On July 11th was when I fell down my driveway (is a few hundred feet long and sloped at 30 degrees) was immediately before I was diagnosed with and tested positive for LYME disease. You can see when I began treatment with Prednisone and Doxycycline b/c my sleeping respiration rate declines literally within 12 hours of starting medication.
And here is where I overlay sleeping SPO2 data on top of respiration rate
The white line that is peaking is respiration rate; the one that is declining is SPO2. I’ve got the separate data plotted in Excel show a high -ve coorelation. A clear indication of a health issue which I could have addressed much earlier - but I was ignoring my watch data for some reason. I check every day now.
There is a very high degree of coorelation with how I feel and am trending with the data I can pull from my watch.
Tom