Samsung Watch 5 Pro - Blood Oxygen Monitor Garbage ?

[Obsydian]

So I had suspected sleep apnea and consultant arranged sleep monitoring device, quite industrial looking, result was ZERO episodes, not I did not wear my watch at the same time.

My watch regularly flags me below and some long periods.

Does this mean like blood pressure these functions are pointless and inaccurate.

Regards Obsydian

 

 DAILY DEVICES 

 

 ZFold4 [Mobile], Pro5 [Watch], S8 Ultra [Tablet], Book2 i5 [Laptop], Buds Pro2 [Buds] M70A 32/43" [Monitor], Smart Tags+, iPad Mini 5 and iPad Pro 12.9 GEN2 [Tablets], Dell Inspiron G5 Laptop 

  

 HOUSEHOLD DEVICES 

 ZFlip3 [Mobile], Watch5 [Watch], S7+ [Tablet], QN95A [TV], Q900A [Soundbar], MC28M6075CSM [Microwave], Samsung Level [Speaker], Buds Pro [Buds], iPhone 12, iPad Air 2, Air tags

[JGM70]

Watch the YouTube review of the Watch5 Pro by "The Quantified Scientist". He specialises is post doctoral biomedical research so knows what he's talking about! The Watch5 Pro readings are innacurate. Apparently the £29.99 Honor Band 6 has more accurate readings!

[Trish15]

mines showing 78% for 56 mins a night . should I be worried

[Frostbitblue]

My watch was accurate. I had readings in the 70's as well for who knows who many years. I had only had the watch for about a month. I developed arythmia in my life and ended up have cardiac ablation twice to have my heart rythm corrected. Sleep apnea could have been the underlying cause.  I use CPAP machine now and since using that device my watch gives readings of 88-97% during sleep. Yes, you should do a sleep study. 

[Slocko]

Same problem for me. I changed phones and the new phone doesn't give me the durations of being below 90 percent in Samsung health. Just a minimum. Pretty frustrating.

The data is there because I can see it in the old phone that is still active. 

[krisbe]

How was your sleep study?

[Billybonkers]

My Galaxy pro watch is recording blood oxygen levels as low as 76 for 19 minutes. I checked recordings from ist Jan up to today. 89 is the highest during that period. I am diagnosed with AF.

[Benice]

Did you get diognosed due to the reading on your watch?

[Obsydian]

Interesting your question reminds me i needed to update this post.

To answer your question, no it did not as I was given a full-on sleep monitoring device, that said no.

Anyway on the back of that sometime later, I saw an ENT Consultant, long story short, I had a deviated septum (apparently quite common), and post the surgery 6-12 months on I very rarely drop below 90% SpO2.

[StraightArrow]

Just wanted to chime in to corroborate my story with yours for anyone still questioning the accuracy of their watch. I moved to a higher elevation and started having arrhythmias. Doctors were pretty stumped after multiple tests and kept saying it was anxiety. I bought the watch4 just hoping it would catch any abnormal rhythms but coincidentally it caught that I was having desaturations (drops of over 3% o2) pretty often. Dropped into the 80s pretty much every night, albeit not for very long.

I did a study and it found i had 16 desaturations/hour per night with an spo2 average of 92 which I'm sure my heart wasn't happy with. I will include both my watch data and the oximetry data from the medical equipment they used to diagnose me, but the tldr is the watch was incredibly accurate.(notice how it caught the dip at 5:20)

The watch actually was on the conservative side. It was instrumental in catching that I had mild to moderate apnea exacerbated by elevation. There's no way i would have pushed my doctor to do a sleep study without it. I'm finally on oxygen a year later and thankfully i havent had full on atrial fibrillation yet but it has progressed to a pretty uncomfortable state so I'm glad I caught it when i did. I don't know if that's the full problem as i just got my o2 so i may update here if everything calms down.

Anyway, for anyone reading, if you get troubling results consistently from your watch, I strongly encourage you to get an official study done. It may just save you from developing some serious conditions.

[Slobodan-ri]

I tried lying down in a few different positions, measuring spo2 parallelly on my watch and finger oxymeter. At one point, my watch was showing 77%, and it was 95% on oxymeter.