Need help reading basic O2/Heart Rate overnight graph

[rwhargis]

Need help with overnight results as recorded on my new SleepU™ Wrist Oxygen Monitor by Wellue Health. I have been on Oxygen for 7 years and bought this to check on my O2 level overnight and it seems to work well.
I decided to have my wife wear it as she has some pretty bad sleeping habits and the results look alarming to my uneducated eye. I sent the graph to her primary care and pulmonologist to see if she should get a sleep study done but it was received rather coldly by both. I have attached a jpg file of the recording. Any words of wisdom out there as to weather I should try and get a sleep study for her, we live at 8000 feet? Thanks, Bob

[Jeff8356]

Was it only the one night this happened?
Is there any chance the sensor was getting knocked around while sleeping (tossing/turning)?
I would try it again for a second night, while I was making an appointment to see my Dr. 41 Minutes below 90% is generally not a good thing. It may be apnea, or it may be some other health condition, but I would recommend getting to the Dr to have it checked out.

[Morbius]

I sent the graph to her primary care and pulmonologist to see if she should get a sleep study done but it was received rather coldly by both.

What does "received coldly" mean? Did they refuse to order it? A home study is a great way to start.

Looks valid to me (not artifact). Sure, do it again to document repeatability.

Is that time stamp accurate? What up with going to bed at 4AM?

Been at 9000 feet for long? Although seems to me if it were high altitude periodic breathing it would have been all night. Plus one acclimates in a few days.

Need rest of medical history.

Not likin' "receive coldly" w/o explanation. I'd have a low tolerance for finding new guys.

[Morbius]

my wife ... has some pretty bad sleeping habits ...

Ya think!?

[Morbius]

At 8 to 9 o'clock in the morning can I assume you're up? What are your observations of her breathing? Short of breath? Obstructive retching? Central apnea? Periodic breathing? Sleeps with a lot of pillows?

[rwhargis]

Thanks, got an appointment today and now have a "SNAP" home sleep study on the way. Will see where all this leads.

[Morbius]

Thanks, got an appointment today and now have a "SNAP" home sleep study on the way. Will see where all this leads.

In the very limited amount of information you have provided, SNAP is not a good choice for HST as it doesn't actually record "sleep". Try to make note of her actual sleep periods to try to properly interpret results (right, that might entail you not sleeping).