OSCAR Oximetry Pulse Rate Events - In Excessive Amounts (?)

[DavidEsp]

From data recorded by a Wellvue O2Ring, OSCAR typically displays around 300 pulse rate drop events per night's sleep, itself around 8 hours. Also when I am awake.

I see in OSCAR's Preferences for Oximetry, a (presumed significant) pulse drop is by default set to 5 bpm in 10 seconds. With this setting, for a typical user, how many events would OSCAR typically report? I imagine it would be ten times less than I experience - otherwise the default "hurdle" would have been set higher. Is that the case?

If the above is indeed the case, then what might my "overloading deluge" of 300 events/night imply as possible "most likely" explanations? I believe it is likely just my normal state, hereditory in nature (my mother's pulse rate was known to vary abnormally).

[srlevine1]

Have you considered random noise caused by movement and static-producing bedding?

[DavidEsp]

The ring records occasional sporadic movement separated by nothing (measured). There is no obvious correlation between pulse events and movement. Some (not all) of the densest event-groups are during periods of no (detected) movement. My pulse rate varies a bit more than most people (from the limited number of other peoples' traces I've seen). Zooming in on one dense patch shows it cycling up and down (pretty regularly) with a peak-to-peak pulse-rate (not waveform!) period of 30 seconds. So I doubt it's static. I think it's just me.

[DavidEsp]

Interestingly, for my GF wearing the same O2Ring last night, only 62 pulse-change Events were listed/displayed (as compared to my approximately 300). Even for that number though, I had the impression of being swamped by events, "losing the wood among the trees".

For her, doubling the rapid-change to 6% resulted in a more sensible/useful number and significance of events.

For me, keeping it at default (3%) but doubling the pulserate-change to 10 bpm gave me the best balance of information.

I discovered these settings by doing iterative experiments in a test-profile, where on each iteration I deleted data, altered the Preference > Oximetry settings and re-imported the same data.
By method described in this post:
https://www.apneaboard.com/forums/Thread...#pid467381

I wonder if events could in principle be coloured according to their degree (percentage) of drop.

[DavidEsp]

Oh yes, and I discovered that the Preferences > Oximeter settings (at least) are per-profile.
So different profiles can have different settings.