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Why Are AHI High When Wide Awake?
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Dreams of Green Offline

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Post: #1
Why Are AHI High When Wide Awake?
The following isn't something I have any real concern about, I'm just curious about it. My AHI is usually good, under one per hour. However I notice that on the rare night I lay for an hour wide awake, or wear my mask while reading in bed for an hour, and then look at the machine, AHI is very high for that hour, 10+. And to be clear, I'm talking about being wide awake, not half awake where I know sleep/wake events can sometimes be interpreted as AHI events.

I don't think I'm having any AHI events while reading in bed, so I'm curious why the machine thinks I'm having so many AHI events when I'm not sleeping. I'm not talking during this time or anything like that (which I'd think could be interpreted as AHI events).

Thanks
(This post was last modified: 10-17-2016 02:26 AM by Dreams of Green.)
10-17-2016 02:21 AM
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big_dave Offline

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Post: #2
RE: Why Are AHI High When Wide Awake?
Irregular breathing is perfectly normal while you're awake. Many different, perfectly normal things affect your breathing while you're awake. Just ignore it because your AHI while awake is meaningless.
(This post was last modified: 10-17-2016 02:25 AM by big_dave.)
10-17-2016 02:23 AM
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Ockrocket Offline

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Post: #3
RE: Why Are AHI High When Wide Awake?
(10-17-2016 02:23 AM)big_dave Wrote:  Irregular breathing is perfectly normal while you're awake. Many different, perfectly normal things affect your breathing while you're awake. Just ignore it because your AHI while awake is meaningless.

Probably not a good thing to ignore if AHI compliance is required for driving licence/work...
The high AHI will lift the overall average AHI for compliance over time.
10-17-2016 02:44 AM
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Sleeprider Online
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Post: #4
RE: Why Are AHI High When Wide Awake?
There is no AHI while you're awake, although your machine continues to flag any pause in breathing exceeding 10 seconds. When you talk, drink, hold your breath for any reason including position changes or reading a good part in a book, that's what happens. A lot of people experience clusters of CA at sleep onset, and again these don't mean much to therapy. You are right to not be concerned, and you can just deduct these events if you're keeping track.

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10-17-2016 09:28 AM
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NorthernGuy Offline

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Post: #5
RE: Why Are AHI High When Wide Awake?
My machine (Dreamstation) does the same thing. When I lay awake, it flags events like crazy. It shouldn't be recording events while awake, but the machine doesn't really know if you are awake or asleep, so it just records what it senses.
Only advice is try to fall asleep faster (easier said than done) and also importantly shut it off first thing once you wake up for the morning, especially if you use snooze button.
10-17-2016 05:37 PM
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Tez62 Offline

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Post: #6
RE: Why Are AHI High When Wide Awake?
Dreams of Green, have you looked at your Sleepyhead data during those waking periods. Mine go up to and the are usually CA's.
I believe they will be an increase in CA's (Clear Airway) and I put them down to movement rather than Apnea's.
10-17-2016 06:57 PM
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Dreams of Green Offline

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Post: #7
RE: Why Are AHI High When Wide Awake?
Thanks all!

Tex62, I have not looked at them in Sleepyhead but I will look and see what type of events they are. They would have to be due either to slight movement and/or irregular breathing, because I'm definitively not talking or drinking or anything like that which I'd expect to cause them.
10-18-2016 05:09 PM
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0rangebear Online

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Post: #8
RE: Why Are AHI High When Wide Awake?
Sleep wake junk can create confusion when determining your real AHI, whether you are reading or just siffering from insomnia. Sleeprider is of course correct that you have learn to "deduct" these "events" to get your real AHI.

There are several threads on this in the forum see.

http://www.apneaboard.com/forums/Thread-Sleep-Wake-Junk-and-insomnia
http://www.apneaboard.com/forums/Thread-CONFIRMING-SLEEP-WAKE-JUNK

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it'll take more than a doctor to prescribe a remedy

Observations and recommendations communicated here are the perceptions of the writer and should not be misconstrued as medical advice.
10-18-2016 09:35 PM
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