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Sleep index low and spo2 low

Have anyone problem with sleep respiration index? I have 6 brpm lowest index and spo2 sometimes I noted 78%it is not real. Definitely garmin brand is not for the such measuring. I suppose that many people have such problem. I don't have problem with health. 

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  • I don't have problem with health. 

    You may suffer with sleep apnoea, without feeling any immediate health problems. Measured 78% O₂ saturation is very well possible in such case, because…

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  • I don't have problem with health. 

    You may suffer with sleep apnoea, without feeling any immediate health problems. Measured 78% O₂ saturation is very well possible in such case, because of periferal vasoconstriction, reducing the SaO₂ values detectable by the optical sensor on the wrist. That's the normal and expected behaviour of any device measuring the SaO₂ on extremities.

    You may consider visiting a specialist and having your sleep analyzed with polysomnography, which would show you more precise data, and could discover sleeping anomalies you may not be aware of. Do not expect a perfect sleeping diagnostic from a watch (regardless of its brand). It is just a tool helping you to understand what are the tendencies throughout the time, but not a medical diagnostic instrument. If a smartwatch could replace polysomnography, the manufacturers of such medical instruments, and the labs would be without jobs.

  • Ok. But what about breathing, even after activity, when I feel that I breathe often, but the indicator is 9-10, it seems that the sensors do not even closely show the reality.

  • Perhaps it could be due to a problem of blood circulation, bad wristband fit, incorrect position, unusual level of hemoglobin, periferal vasoconstriction, high tan of the skin, and possibly a number of other factors may play a role.

    First of all, you should count the real number of breathes per minute (better over several minutes), and then comparing it with the values reported for the same period by the watch (writing all carefully down, or making photos). Maybe you are right and the reading is wrong, but perhaps it is right. So, before searching the rasons of the discrepancy, verify first whether there is any discrepancy at all, and how big it is.

    If you eliminate all listed possible reasons, and still find the reading is wrong, contact the Garmin Support, with the data and arguments you collected. Contacting them just with a vague feeling something may be wrong, and having no evidence, will likely not bring you far.

  • thank you for your answer. I will address to support. I think somethning wrong with my watch, because I made all steps about which you said. Also I have given watch to my wife and she has the same index.