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It's pretty hard to replicate CSR with just stress. A real solution to the centrals and this periodic breathing is ASV. That might open the door for an evaluation of left ventricular ejection fraction to verify better than 45% LVEF to qualify for ASV. We have no idea what kind of cardiac workup you have had.
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Your response to fast vs slow onset is unclear. Sounds like some stuff was slow but that there was a significant change last September. Prior to September were you still able to work? Was the chest pain, inability to exercise etc present or did that all happen after that point? In short I am trying to understand if your debilitating symptoms are short term.
It appears you have been on CPAP for about a year which would be prior to September. Does your OSCAR data show any changes in central apnea or your bradypnea over that time? If these symptoms were new as of September that would be clinically relevant. If the central apnea was treatment emergent I would expect it to have been higher earlier on and decline over time.
Seeing a screenshot of your OSCAR overview tab with the range set to last year might help us see/interpret any changes over this time. Most important charts would be the AHI, Usage, Tidal Volume, Minute Ventilation and Respiration Rate.
Geer1, all of these questions seem like good ones for the OP to answer as he gathers information for his doctor. I’m skeptical whether we on the forum have an additional role beyond that to play at this point. Any thoughts about that?
I'm just curious about the shape. (trying to understand)
Looking in detail I see inhale for 10 seconds and exhale in a fraction of a second.
I can't imagine me breathing out that fast.
(steep decline = fast breathing out : my mother language is not english as you probably already noticed)
I’m still not seeing what you’re describing. Your inhalations are the curves above the red line, and your exhalations are below the line. Pauses between breaths oscillate right around the line. For purposes of calculating your ratio of inhalation time to exhalation time, the pauses are counted as part of the exhalation.