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normal SPO2 and BPM?
#1
normal SPO2 and BPM?
           
I've been recording my SPO2\BPM for 10 days now. I read on the Internet that sleeping BPM should be between 40-50, so I set the low BPM alarm to 40 and it went off once at 38. I set the SPO2 alarm to 92, but it kept going off all night, so I lowered it to 88. It sometimes alarms and the SPO2 reading is anywhere between 74-82.
I thought the first finger sensor with alarm may not be accurate, so I purchased a CMS-50D+ that is designed for sleeping. It alarmed too. I then wore both at the same time for one night and they matched up almost exactly, with the exception that the CMS-50D+ SPO2 is constantly 2 points under the other, so I think it is just always 2 points too low out of calibration.



Notes: I'm still trying to get the SD Card to work in CPAP - it worked 1 time and now computer doesn't see SD Card when inserted.
Notes: The first few seconds of every SPO2 are invalid, as you can see from the skinny erroneous line at the start of each screen shot. I just posted asking if there's a ways to edit\remove the first minute of the SPO2 files.

Thank You
John
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#2
RE: normal SPO2 and BPM?
John, It will be interesting to see some Sleepyhead data as that is more likely to tell us if there are any events that cause the desaturation like we see at 03:40 to 04:40. With regard to setting alarms, I think you should just not set alarms. Your data tells you what you need to know and disrupting your sleep seems counter-productive. You will arouse if you you have apnea or other events that are a problem, and our focus needs to be prevention. Getting your Sleepyhead CPAP data is going to be the most helpful in coming up with a plan.

We know you likely have severe obstructive apnea and that it is likely to be strongly affected by your sleep position. You recently chose wisely not to pursue surgery, but in lieu of that option, have you obtained a soft cervical collar to help keep your airway optimally aligned? From these charts, I'm fairly certain that when you get Sleepyhead operational, we will see a cluster of obstructive apnea that corresponds with the desaturation. In your case a soft cervical collar, working with your CPAP is going to be the best solution.
Sleeprider
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#3
RE: normal SPO2 and BPM?
If you are using a SD card adapter plugged into a usb port that may
be your problem. I had 2 of those cheap adapters off ebay and both
of them failed then I remembered I had an unused laptop computer
with a SD reader and the card I thought had gone bad was working fine
after all.
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#4
RE: normal SPO2 and BPM?
Can I ask how you are recording your SPO2?
Maybe it's obvious and I'm missing it, but I'm new and learning. Smile
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#5
RE: normal SPO2 and BPM?
(06-10-2018, 01:42 PM)kasiahbug Wrote: Can I ask how you are recording your SPO2?
Maybe it's obvious and I'm missing it, but I'm new and learning. Smile

He's using Contec oximeters (a CMS50F and more recently, a CMS50D+), oximeters which seem to be most common in this family/forum.
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