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Recent increase in Central Apneas and AHI
#1
Recent increase in Central Apneas and AHI
Hello, I'm hoping for some feedback from the experts here.  1) Does anyone have any thoughts on why my central Apneas are way up? 2) Any ideas on how I can improve the treatment?

I've been using my Dreamstation APAP 100% for about 3 years with an average AHI of 1.6 (its been great) with an average of .27 OA, .7 CA and .8H.  

For some reason over the last couple of weeks I have seen a huge increase in central apneas (on the order of 30-50 a night) with very poor sleep, a lot of wakeups, etc.  I'm seeing AHI all over the place 1-9, I'm waking up constantly, I'm dead tired, its almost worse than it was before treatment...

I have lost about 10 lbs this year, but it seems odd that it would culminate so suddenly last month and then fluctuate between great nights and poor nights.  I cant think of anything that would be causing this variance in my daily routine.

I have a sleep consult & study scheduled for late June, but hoping you may have some ideas or tips for the interim.

I've included two samples:  4 May = great sleep night and 8 May = bad sleep night.

Good Sleep Night
   

Bad Sleep Night
   

Any help or thoughts would be greatly appreciated.  I've already learned so much from this board, I had no idea there was a community like this!!

--Colt
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#2
RE: Recent increase in Central Apneas and AHI
Welcome to the forum.

Based on your bad night I'd turn off your Flex. Higher values of Flex will tend to increase Centrals.
Why the difference between good and bad nights? Central Apnea is consistently inconsistent. In other words, it can unpredictably jump all around.
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#3
RE: Recent increase in Central Apneas and AHI
Thank you Gideon - I was hoping you would have time to take a look at this!

I thought the EPR might be a factor, but had no clue if more or less was needed. I will turn it off for a few nights and report back.
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#4
RE: Recent increase in Central Apneas and AHI
I don't see your APAP ramping up during the multiple events.... regardless of flex.

gradually raise your pressure above the minimum to prevent events. APAP is really worthless.
Flex is comfort... as long as you're comfortable with it turn it off. Flex will be a problem. Your leaks aren't good...
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#5
RE: Recent increase in Central Apneas and AHI
Actually, the OP leak rate isn't bad. Respironics units you need to gauge leaks by the lower trace line.
Dave

OSCAR
Standard OSCAR Chart Order
Mask Primer
Dealing With A DME
Soft Cervical Collar Wiki
INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEBSITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
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#6
RE: Recent increase in Central Apneas and AHI
This is more like it, and the Vitera is the answer. Leaks mean less therapy. Lower trace line? What is the upper one for? I'll say it again as I said numerous times...... scrap APAP's.



   
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#7
RE: Recent increase in Central Apneas and AHI
And again please note that your ResMed leak graph versus the original posters Respironics will look quite different. Your ResMed shows a single trace line while Respironics DreamStation shows two trace lines.
Dave

OSCAR
Standard OSCAR Chart Order
Mask Primer
Dealing With A DME
Soft Cervical Collar Wiki
INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEBSITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
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#8
RE: Recent increase in Central Apneas and AHI
what's the second trace line represent?
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#9
RE: Recent increase in Central Apneas and AHI
Respironics upper leak line is total leaks while the lower one is what I call unintentional. That would be mouth or mask leaks.
Dave

OSCAR
Standard OSCAR Chart Order
Mask Primer
Dealing With A DME
Soft Cervical Collar Wiki
INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEBSITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
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#10
RE: Recent increase in Central Apneas and AHI
so the upper graph is the one that counts then ! LOL
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