AHI value for cpap machine

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AHI value for cpap machine

Postby rlirwin » Tue Sep 07, 2010 2:08 pm

I was recently diagnosed with OSA. My AHI was 10 for the duration of my sleep study and 18 during REM. Since I have afib and fatigue issues, the doctor thought that the OSA should be treated. I started using my respironics automatick CPAP machine on 8/23. I also ordered the respironics software that allows you to see what is happening during the night (they really should include that with the machine). Since starting with the cpap, my AHI is an average of 2.4, with the highest night being 3.7. Why are the numbers so much different than the sleep study? While I've adapted well to the cpap, I don't want to wear it if I don't need to.
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Postby sleland » Tue Sep 07, 2010 3:12 pm

Your numbers are lower because the machine is doing exactly what you want it to do - opening your airway so you don't stop breathing. An AHI of 10 is not good, but your AHI of 2.4 is great. Doesn't mean your apnea is getting better - it means your treatment is working.
Severe sleep apnea diagnosed 4/2010
Resmed S8 Autoset II w humidifier
Swift LT for Her
Pressure set at 6 - 16
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Postby rlirwin » Tue Sep 07, 2010 4:52 pm

Then I guess if I want to see if my apnea is improving I'll need another sleep study. I wonder if there is anything in the data that I get from the machine that would provide clues?
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Postby jessy 49 » Tue Sep 07, 2010 4:59 pm

Why do you think you have improved.

Sleep apnea doesn't improve with treatment -- it simply gets treated. Occasionally a weight loss will result in resolution of sleep apnea -- but only if your apnea was weight-related (weight loss can also result in increased pressure requirements). Surgery can treat sleep apnea but "success" in surgery is measured by a decrease in pressure requirement -- not in resolution of the apnea.
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Postby Bons » Tue Sep 07, 2010 5:00 pm

rlirwin wrote:Then I guess if I want to see if my apnea is improving I'll need another sleep study. I wonder if there is anything in the data that I get from the machine that would provide clues?


What machine do you have? I can't acess data on me REMstar flex but I went to my DME today and had the therapist do a print out for me to see if it's doing me any good (started a week ago today). Turns out I'm right and it isn't, so tomorrow I'm being switched from a CPAP to an APAP. Call the store that sold you your machine and see if they will go over the data with you.
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Postby sleland » Tue Sep 07, 2010 5:58 pm

Bons, you should be a little assertive and tell your DME that you want a machine that is fully data capable. You shouldn't have to have them run off results. You should have a machine that allows you to access the data every morning. It's so nice to track your stats and see that CPAP really is allowing you to breath!
Severe sleep apnea diagnosed 4/2010
Resmed S8 Autoset II w humidifier
Swift LT for Her
Pressure set at 6 - 16
sleland
 
Posts: 253
Joined: Tue May 04, 2010 1:31 pm
Location: Montana

Postby sleland » Wed Sep 08, 2010 11:46 am

rlirwin - Your original question has been on my mind. Are you thinking that by using CPAP someday you will no longer have sleep apnea? That is not true. One of the things some of us struggle with in the beginning is that the whole mask/machine thing is a forever deal. It can be hard to accept that you and your mask are going to be together for the rest of your life. However, that life will be longer and better because of CPAP therapy.
Severe sleep apnea diagnosed 4/2010
Resmed S8 Autoset II w humidifier
Swift LT for Her
Pressure set at 6 - 16
sleland
 
Posts: 253
Joined: Tue May 04, 2010 1:31 pm
Location: Montana

my ahi with cpap is 3.1

Postby hhunsicker » Wed Sep 08, 2010 5:18 pm

Still new to this. (On another thread I described how I switched machine out yesterday.) I slept with the S9 last night for the first time and could see my numbers in the morning. My ahi was 3.1. A lot lower than my sleep study of 20, but don't I want a 0 ahi? what should I expect my ahi with cpap to be :?:

It was a different experience with the S9 (from the resmed Elite II that I had started with for the first week), and I felt myself not breathing and waking up a few times, had to watch tv to get back to sleep. I am hoping to get a better night sleep tonight.
Holly
Resmed S9 Elite with EPR and heated humidifier; Swift FX;
11 cm pressure, AHI 20 (longest event 77 seconds); SaO2 74%
1st Study and Diagnosis 8/15/2010
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Postby sleland » Wed Sep 08, 2010 5:27 pm

An AHI of 0 would be the ideal but I have never read of anyone getting that consistently and I haven't read that that is really a goal. Since I started therapy in April, I've only had that happen once. Anything under 5.0 is considered success - means you are breathing well enough to be getting plenty of oxygen while you are sleeping.
Severe sleep apnea diagnosed 4/2010
Resmed S8 Autoset II w humidifier
Swift LT for Her
Pressure set at 6 - 16
sleland
 
Posts: 253
Joined: Tue May 04, 2010 1:31 pm
Location: Montana

Postby hhunsicker » Wed Sep 08, 2010 5:29 pm

Thanks for the info
Holly
Resmed S9 Elite with EPR and heated humidifier; Swift FX;
11 cm pressure, AHI 20 (longest event 77 seconds); SaO2 74%
1st Study and Diagnosis 8/15/2010
hhunsicker
 
Posts: 11
Joined: Mon Aug 23, 2010 10:14 am
Location: Texas

Postby Bons » Wed Sep 08, 2010 6:21 pm

sleland wrote:An AHI of 0 would be the ideal but I have never read of anyone getting that consistently and I haven't read that that is really a goal. Since I started therapy in April, I've only had that happen once. Anything under 5.0 is considered success - means you are breathing well enough to be getting plenty of oxygen while you are sleeping.


I guess that's why my machine is getting changed tomorrow. When I had my numbers downloaded by the tech yesterday my AHI was 9.5 for the night before.... As to getting a machine that lets me see the data, my insurance company won't spring for it an with one kid unemployed and another in college, I'll settle for driving the DME nuts once a week to print it out for me - maybe if it keeps showing that I'm having problems we can convince the insurance company that it's vital for me to have access.
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Postby jessy 49 » Wed Sep 08, 2010 11:22 pm

Bons wrote:I guess that's why my machine is getting changed tomorrow. When I had my numbers downloaded by the tech yesterday my AHI was 9.5 for the night before.... As to getting a machine that lets me see the data, my insurance company won't spring for it an with one kid unemployed and another in college, I'll settle for driving the DME nuts once a week to print it out for me - maybe if it keeps showing that I'm having problems we can convince the insurance company that it's vital for me to have access.


Your DME bills the insurance company by the same code whether or not your machine has data access or not. The DME will try to get away with giving you a base model because they make more money on a base model rather than giving you a higher end (data capable) model which has a smaller profit margin for them.

If you are talking about a straight cpap, most insurance companies doesn't care what you get.
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