(03-15-2022, 07:09 PM)Jay51 Wrote: A home capnometry/oximetry test I took had all of the artifacts isolated and in their own section. I didn't realize that you should disregard the extreme outliers.
Well, you shouldn't disregard the extreme outliers, especially if one channel (HR) appears to be artifact, while the other (saturation) does not. An abnormal beat (like a PVC, or a missed beat) could sneak in there. If the artifacts had their own section in your study, it means that somebody got out of SkyLab View, looked at much smaller windows and manually identified and edited out the artifact.
Now I'm looking at this study with essentially fixed heart rate and going WTF's up with that?
You got a pacemaker? Pile of medications? Cardiovascular autonomic dysfunction? In the kind of central apnea we're talking about here (and even that's unclear to me since that appears to be an internet diagnosis) there should be a ton of signature Heart Rate Variability and there is zero, nada, goose egg, zip.
Blood returns to right heart via inspiration. In central apnea then, blood return to the heart is impaired during the apnea, resumes during resumption of breathing but requires an increase in heart rate to get rid of the surge in blood return. The length of central apneas determines the cycle of Heart Rate Variability (Low or High) Any HRV is clearly absent here.
What is also clear is that unmonitored, arbitrary high EPAPs probably aren't a good idea either.