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[Equipment] Newbie question about AHI calculations.
Cooter, if you seriously have to pay for treatment out of pocket, then just say so, and we can point you to the solution at a much lower cost. Only insurance dependency would keep you from been fully equipped by the end of this week.
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Hi Cooter99,
Welcome to the Apneaboard. Good luck with your sleep apnea journey.
I'm in Edmonton, sounds like you are on southern Alberta.
I got my diagnosis about a year ago and it was a life changing moment. Lots to learn, at times it seems like too much. I am in a much better place than this time last year. Largely due to getting my sleep apnea addressed.
Could I get you to recheck your report from you sleep study. 
Much of the advice you are getting here is based on this sentence.
"My polysomnograph indicated an AHI of 30, and all of my apneas, with the exception of one, were central."
Usually it is the other way around.
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Hi Sleeprider, yup - my insurance plan covers $300 for respiratory therapy/equipment per year. I've asked for clarification but the documentation for my plan appears clear.

Hi Mogy, Go Oilers! My report indicates 291 minutes of test time, 1 obstructive apnea, 27 central apneas, and 60 hypopneas. This page shows my AHI at 18.2, so I'm not sure where the AHI = 30 came from. I'll assume I misheard the respiratory therapist.
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Get a copy of your sleep study. My wife had a sleep study and was actually diagnosed with very severe obstructive sleep apnea with an AHI of 97! That seemed out of line with my experience of sleeping next to her every night. It turns out the technician omitted a decimal and the AHI was actually 9.7. The most amazing thing is the diagnosis was released with this incorrect AHI in the recommendation section, and it had been transcribed that way into the computer record summary. Had we not caught the error, this would have been the diagnostic metric on her record. It is important to get copies of the studies and apparently we need to proof them for errors.

How are your results on the CPAP so far? Have you downloaded SleepyHead yet?
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Hi Cooter99,
I take it the 99 is a Gretzky reference. Lots of fun last spring. Will they make it this year? Lowetide is starting on his draft talk.
There 2 basic types of sleep studies. The initial diagnostic study where they determine whether you have sleep apnea. That is the most important one.
Then there is a second titration study, possibly, where they they try to determine what the best settings are for the CPAP.
The diagnostic study is the main one that Sleeprider wants to see.
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Another couple of questions.
What type of sleep study did you have? At home or in the lab?
How much of the 291 min were you awake, or semiconscious?
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Heheh - no Mogy, the 99 was a reference to how many years old I feel.

Found out where the AHI of 30 came from. Evidently my CPAP salesperson (I can't in good conscience give her the moniker of 'professional') has conflated my RDI with my AHI. According to my PSG report my RDI is 36 and my AHI is 18. She's insistent that the two numbers mean the same thing. Like I said in my original post, there's so much to learn.

I do have a copy of my PSG, Sleeprider, and I have downloaded and installed SleepyHead. Currently my SD card has 3 days of data, and the data are interesting. During my PSG, I didn't sleep much on my back, but with the full face mask I don't have much choice in the matter now. SleepyHead shows I'm still getting a burst of centrals in the same stages as I was during my PSG, but now I'm also getting a swack of obstructives too.

I swapped my full face mask for a partial, so hopefully I'll sleep better tonight. It's amazing how much you miss side-sleeping when you can't do it comfortably.

Thanks again everyone.
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Hi Cooter99,
WELCOME! to the forum.!
Good luck with CPAP therapy and getting it fine-tuned, you have come to the right place for guidance.
Hang in there for more responses to your post.
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(01-08-2018, 05:49 PM)Cooter99 Wrote: Heheh - no Mogy, the 99 was a reference to how many years old I feel.

...Like I said in my original post, there's so much to learn.

I swapped my full face mask for a partial, so hopefully I'll sleep better tonight. It's amazing how much you miss side-sleeping when you can't do it comfortably.

I started CPAP in 2012.  As an engineer I was _really_ frustrated with the quality of information available from the initial Sleep Study and from the retailers of the equipment.

Between the Sleep Study and my first consult with the Respiratory Specialist Dr I found this forum.  The information and answers here equiped me to know the questions to ask and to understand the answers.  Once I got the machine I started using SleepyHead. As you have found - it is very useful.

Your diagnosis with the CA's is way more complex than my simple OSA but I'm sure you will work it out with the help available here.
Disclaimer: The 'Advisory Member' title is a Forum thing that I cannot change. I am not a doctor and my comments are purely my opinion or quote my personal experience. Regardless of my experience other readers mileage may vary.
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