I have to be honest that after a year of the blood oxygen sensor it’s a bit of a toy anyway. You’re supposed to keep your wrist pointed up and hold still when you take a reading. I’m healthy enough that I don’t worry about pulse ox, but if I did, I’d get a dedicated finger reader, like they use at doctors offices. At least mine.
While I’m sleeping the watch takes occasional readings but of course my wrist is rarely pointing up and the readings are all over the place.
I really don’t think that a wrist based reading is the most reliable way to measure blood oxygen.
I have sleep apnea and I sleep with my Apple Watch 7. The blood oxygen readings are useful to me. I sincerely hope no WatchOS update removes this feature and future Apple Watches keep it.
And, as a diabetic, that someday a blood sugar sensor is added .
AMEN — moi-même!!!
Frankly I think you would be better off with a dedicate pulse ox device. Even Apple says, “Measurements taken with the Blood Oxygen app are not intended for medical use and are only designed for general fitness and wellness purposes”
I know that the readings I’ve seen over the past year plus have been inconsistent and often likely incorrect, particularly background readings while sleeping. I will say that if I take an intentional reading following instructions: wrist pointed up, arm still - that the readings seem reasonable. But I don’t really have pulse ox issues so I rarely do this, for the same reason I rarely use the ecg app - which does have regulatory approval.
If your doctor suggested depending on the Apple Watch readings, of course follow that advice. Otherwise I might ask my specialist what they recommend for pulse ox readings.
In the first place, the values taken by the Apple Watch are recorded while I sleep, and no one records if I use a pulse oxymeter.
Regarding the accuracy of the AppleWatch and that of pulse oxymeters: Is the Apple Watch's oxygen sensor accurate?
The end result is I have 2+ years of sleep data and 0 prior to my Apple Watch 7.
Someday, hopefully before I die, I will have a glucose sensor sensor in AppleWatch #. It will be probably won’t be as correct as pricking my finger, but again more usefulas I will have better control.
The same can be said about the other sensors: for most persons, they aren’t worth the trouble, but for may persons they will be extremely useful, even if doctors don’t like them.
We now know that Apple will begin selling today Series 9 and Ultra 2 with the blood oxygen sensor disabled by software, but that existing Series 6 and later and Ultra and Ultra 2 already sold will retain the blood oxygen feature.