SP02 accuracy

[brethor]

SP02 Dropped really low last night??!! Is this accurate? Worried. I have POTS, Dysautonomia etc and have had my Fitbit Sense 2 for a year. The lowest my oxygen has ever dropped is 92% when I had a respiratory infection. I have 2 finger ox readers and today they are both tracking between 96 to 98%. In recent weeks I've had a clear Echocardiogram, clear Cat Scan of head and Chest CT lungs are ok. My partner says I have no gasping, snoring, stopped breath at night. I do however have shallow breathing at times due to my Dysautonomia. I also was recently diagnosed with Hypothyroidism. How worried should I be here?

 

[nerB]

87% may have been a calculation error, an averaging error, also coinciding with an actual random dip in SpO2 level.

I think (and the info the apps present also say this), trends matter more, and identifiable correlations might start to show a pattern.

It sounds, though you describe numerous conditions, that your self care and seeing doctors are well established habits. I might wonder if without all the healthcare and efforts paying off, you might regularly not be in the "good range" as you see it in the trend in the app.

Some random days some values go way off the trend for me. Sometimes I can connect a value to an event or context I noticed, but often I scratch my head.

SpO2 average needs a higher duration of sleep to be accurate, something like a shorter sleep or off-cycle sleep, or a bit of interruption not recalled could also dip that number. Maybe it got stable values that were low but not enough higher values in its sampling.

If you feel fine, and so on, now, that seems good, and an idea might be to watch for future deviations and see what other metrics say at the next deviation.

Talking with your doctor too is always good if you have a concern.