What makes a machine say CA (central apnea / clear airway)?

General Discussion on any topic relating to CPAP and/or Sleep Apnea.
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Nocibur
Posts: 256
Joined: Sat Jan 25, 2025 6:08 am

Re: What makes a machine say CA (central apnea / clear airway)?

Post by Nocibur » Sun Oct 26, 2025 10:47 am

ozij wrote:
Sun Oct 26, 2025 9:42 am
Ever heard of OHS = Obesity Hypoventilation Syndrome? Could be the machine you're trying to get acquainted with isn't good for the job of making sure your oxygen is high enough and stable all nigtht through.

Definitely discuss your low oxygen with the doctor who prescribed the machine, and if he/she doesn't trust your oximeter, ask for a nightly oximetry recording with a professional oximeter.
Excellent thought o.!

Also consider PFT and ABG (or if basic chem panel is available check HCO3-).

dsws
Posts: 22
Joined: Wed Jun 25, 2025 6:39 pm

Re: What makes a machine say CA (central apnea / clear airway)?

Post by dsws » Sun Oct 26, 2025 1:11 pm

Good idea. I'll read about obesity hypoventilation syndrome again. If I remember right, it doesn't fit me as a diagnosis: I can breathe well enough to burn as many calories-per-hour as anyone else at the gym, and OHS sounded completely incompatible with that. But it might provide some insight.

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