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The math of calculating AHI
#21
RE: The math of calculating AHI
Thank you
John
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#22
RE: The math of calculating AHI
(03-21-2013, 11:26 PM)JJJ Wrote:
(03-21-2013, 08:13 PM)PaulaO2 Wrote: Really, does it matter to be that freakin' exact? Anything over 30 is considered severe (I keep saying they need to revise that) so, does it matter to make a difference 
[...]

And, in spite of knowing that the AHIs reported by my machine may not be perfectly accurate, I still strive for the elusive zero AHI night. I came the closest ever last night when SleepyHead told me I had 0.09. I was thrilled, in spite of the fact that I felt terrible because I had a miserable night's sleep due to missing my bedtime. (Went to a Wagner opera and didn't get home until 1 am.)

[...]


Consider this: Your CPAP runs for 6 hours, mask on to mask off. Total events is 30. So AHI would be 30/6, or 5.0. However, your bedside clock showed that it took you one hour to fall asleep. So your actual therapy time is 5 hours, and your AHI is 30/5 or 6.0.

So the longer it takes you to fall asleep, the more inaccurate your AHI is.  Oh-jeez
Thanks to everyone who helps us get a better night's sleep.

Anything I post here or elsewhere on these forums is my opinion, not medical advice. Medical advice comes from a doctor.
An Advisory Member is a member of the Advisory Committee which helps shape Apnea Board's rules & policies.
Such membership does not imply medical expertise or qualifications for advising sleep apnea patients about their treatment.

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