Sudden drop in Vt and increase in pressure

General Discussion on any topic relating to CPAP and/or Sleep Apnea.
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stevos2000
Posts: 14
Joined: Thu Sep 29, 2011 11:20 am

Sudden drop in Vt and increase in pressure

Post by stevos2000 » Wed Nov 23, 2016 6:54 am

In the last week I have noticed that my tidal volume has suddenly dropped from normally 420 mL to low 300s (though RR has remained constant at 15). At the same time my pressure has increase from normally 8-9 to 10-11. AHI has remained the same at about 0.1 or 0.2. I don't seem to be having a cold or any other unusual health issues. Any thoughts about what might be causing this or whether this is a cause for concern? Thanks

D.H.
Posts: 3532
Joined: Sun Sep 04, 2016 7:07 pm

Re: Sudden drop in Vt and increase in pressure

Post by D.H. » Wed Nov 23, 2016 8:55 am

stevos2000 wrote:In the last week I have noticed that my tidal volume has suddenly dropped from normally 420 mL to low 300s (though RR has remained constant at 15). At the same time my pressure has increase from normally 8-9 to 10-11. AHI has remained the same at about 0.1 or 0.2. I don't seem to be having a cold or any other unusual health issues. Any thoughts about what might be causing this or whether this is a cause for concern? Thanks
Since AHI remains the same, it's not an emergency, but please do see the doctor that is managing you Sleep Apnea.

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Additional Comments: Auto PAP; 13.5 cmH2O min - 20 cmH2O max