08-02-2024, 11:46 AM
(This post was last modified: 08-02-2024, 11:58 AM by Fixit50.
Edit Reason: add detail
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RE: Oscar Data. No events flagged but weird flow rate pattern during REM
(08-02-2024, 10:27 AM)Dormeo Wrote: Those oscillations around the zero line are called cardioballistic artifacts. The heart telegraphs its beat to the airway. A fair number of people have this, and it's nothing to worry about.I’ve been around the block on the weird waveform thing and I don’t profess to understand it. I think you may be correct about the cardioballistic assessment in ynot’s case however in my case, I doubt it. In my case, the fundamental frequency of the disturbances is around 90 breaths per second. I have a hard time believing my heart rate is that high since my resting HR during the day is in the low 50’s and it normally gets slower at night. Now if the heart could somehow transmit two vibratory pulses per beat, then I might be open to the cardioballistic assessment even in my case. In my case I can restore normal breathing waveforms by wearing a chin strap to keep my mouth from opening during the night. This has the effect of decreasing flow limits since the airway is more patent with the mouth closed. Not sure why decreasing FLs would solve the problem. Below are two pictures. The second zero’s in on a small portion of the first so that you can count individual cycles (crests of the waveform) and see that the rate is ~90.
I’ve shown this to sleep doctors and DMEs and they pass it off as being normal during REM or they simply claim that OSCAR is not medical software and can’t be trusted (ever hear of the word Quack?). I think they are right about the REM part however. I’ve also shown it to a cardiologist, a neurologist and a pulmonologist, and they look at it like a deer in the headlight and tell me to go to a sleep doctor!
