Pulse rate during REM Sleep

[kappa]

I beleive that most wellue/viatom/lookee devices report samples every 4 seconds (which is what my SleepU used - presumably the same as your device). The CheckMe O2 Max is different - it reports samples every 2 seconds and has longer battery life. (Note that there are multiple CheckMe versions - CheckMe O2, CheckMe O2 Max, CheckMe O2 Pod, and CheckMe O2 Pro).

[Sleepy Willy]

I have the CheckMe O2 Max, but the sensor is too tight compared to the SnoreO2. I cut the webbing out of the sensor, which helps, but it's still a bit tight. Unfortunately, they changed the interface on the CheckMe, so the SnoreO2 sensor won't work with the CheckMe.

I guess I'll have to live with the tight sensor for a few nights, until I see the erratic pulse again.

Thanks

[kappa]

Can you just use a different finger on which the sensor fits more comfortably?

[Sleepy Willy]

Yeah, it might fit the ring finger more comfortably, but the perfusion won't be as good.

[Sleepy Willy]

Here's a couple of nights with the CheckMe O2 Max, although neither is a great sample. The first night I forgot to turn on the O2 machine, so I spent a bit of time under 90%, but the pulse seemed stable, except for the one spike. The second night I tore the mask off after a couple of obstructive events, I'm not sure if this was a mask issue, I was without oxygen from 3:40 to 6:30 on this night. The pulse was a little spikey on this night, but not too bad. I'm surprised there is not a stronger relationship between the low SPO2 and the pulse spikes, there is some, but not what I would expect.

You can tell I love to sleep without the machine. 

[kappa]

The clocks aren't synchronized either, but there seems to be good correlation between obstructive events and O2 desaturation once clock skew is taken in to account. A couple of spikes close together it looks like. Could be artifacts or real. I'm not sure how much smoothing is applied to the pulse rate by the device though...

[Sleepy Willy]

I noticed the clock last night when I snuck the O2 Max into my sleep study.

I wonder if I need oxygen? LOL.