Congestion as obstructive apneas

englandsf · Post by **englandsf** » Fri Nov 21, 2014 7:45 am

Is it possible for a ResMed S9 Autoset to "interpret" blockages in the nose caused by congestion as obstructive events?

I am more "bunged up" than usual as winter sets in and the heat comes on, and my AHI have moved from below 1 to around 2. Cause for concern?

70sSanO · Post by **70sSanO** » Fri Nov 21, 2014 9:46 am

I would think the answer is yes. If you have a blockage, I don't think the machine can distinguish one blockage from another.

For instance, if a person holds his/her breath until they pass out, the machine has no way of determining if the airway has involuntarily closed or if the person is just stupid.

John

JDS74 · Post by **JDS74** » Fri Nov 21, 2014 10:49 am

It may be that the machine sees the congestion more as an hypopnea than an obstructive event. It might also see it as a flow limitation which wouldn't be counted in the AHI..

What does your data say?

englandsf · Post by **englandsf** » Fri Nov 21, 2014 11:21 am

AHI 1.93
Clear 0.48
Obstructive 1.08
Hypopneas 0.36

tan · Post by **tan** » Fri Nov 21, 2014 12:59 pm

and flow limitation chart?

englandsf · Post by **englandsf** » Fri Nov 21, 2014 2:09 pm

http://imgur.com/JhOZV5t

tan · Post by **tan** » Fri Nov 21, 2014 2:51 pm

IMNSHO, your flow limitations are a bigger problem. Do you feel rested after night's sleep?

englandsf · Post by **englandsf** » Fri Nov 21, 2014 8:48 pm

Yes much better than before CPAP.

Congestion as obstructive apneas

Congestion as obstructive apneas

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