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How does your CPAP pressure compare to your predictive value?
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PaulaO2 Offline
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Post: #11
RE: How does your CPAP pressure compare to your predictive value?
I use mine only when I have a change in medication.

I once had it on, woke up, and rolled over to pet one of the dogs after turning off the CPAP. I fell asleep without the CPAP running. Woke up feeling like crap on a stick. The oximeter reading was evident my CPAP was working!

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INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
12-17-2012 09:21 PM
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Shastzi Offline

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Post: #12
RE: How does your CPAP pressure compare to your predictive value?
I use my oximeter *every night* it has been most enlightening.
My ODI based predictive number is 8.7 and I am running at about 13cm measured so I suppose it's close enough for starters

Cheers!
12-17-2012 09:59 PM
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jdireton Offline

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Post: #13
RE: How does your CPAP pressure compare to your predictive value?
Sorry, I don't use it very often. The model I have (CME 50E) is a finger end unit that is fairly uncomfortable and falls off in the middle of the night about a third of the time. You can set an alarm, but it is so loud that it wakes my wife and I up, not exactly the whole point. I used it to verify the O2 drops associated with apnea and hypopnea events, then pretty much put it in the drawer once I had the data I needed.

Don't get me wrong, I'm a big fan of oximeter use and it is another piece of information to manage your treatment. I would maybe recommend one of the wrist mounted units (50F & 50I) if you plan to use it frequently. Some people also tape the finger ends with surgical tape to keep them on.
12-18-2012 08:33 AM
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Shastzi Offline

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Machine: ResMed S9 Autoset
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CPAP Pressure: 15cm-20cm H2O (auto)
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Other Comments: CMS50-F wearable Oximeter; Software: SPO2 Assistant

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Post: #14
RE: How does your CPAP pressure compare to your predictive value?
The sensor for the CMS50-F is fairly comfortable, unlike the clothspin style clip on jobs.
I always use some paper hospital tape to keep the thing from moving around or slipping off at night.

Cheers!
12-18-2012 09:17 AM
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IDRIck Offline

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Post: #15
RE: How does your CPAP pressure compare to your predictive value?
Thanks for the info Paula, Shastzi, and jdireton! I've been debating whether I should get an oximeter... I reviewed my original sleep study and they did report number of ODI, just didn't label it as ODI! Smile I had an AHI of 130 and ODI of 67, yikes! My ODI was only about 60x greater than Paula's report on page 1 of this thread!

The predicted pressure (11 cmH2O) was lower with the equation using ODI than with the other two equations (12 to 12.8 cmH2O) and well below the prescribed pressure from my sleep doctor. Note, he prescribed based on my diagnostic sleep study and his clinical experience, not from an in-lab titration.
(This post was last modified: 12-18-2012 10:57 AM by IDRIck.)
12-18-2012 10:55 AM
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jdireton Offline

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Machine: Resmed S9 Elite
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Sex: Male
Location: Florida

Post: #16
RE: How does your CPAP pressure compare to your predictive value?
Rick,

You bring up a really good point in your question I forgot to answer. Yes, any data now would be while using the CPAP for therapy. Sorry, I don't think I'd go a night without CPAP just to see what the non-treatment data is. So, as far as the first prediction formula (I don't have a copy of my sleep study anymore), I just have to let that one be.

Hope we've helped.
12-18-2012 12:23 PM
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IDRIck Offline

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Post: #17
RE: How does your CPAP pressure compare to your predictive value?
Thanks for your replies, jdireton, very interesting! Thanks
12-18-2012 03:50 PM
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Shastzi Offline

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Machine: ResMed S9 Autoset
Mask Type: Full face mask
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CPAP Pressure: 15cm-20cm H2O (auto)
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Other Comments: CMS50-F wearable Oximeter; Software: SPO2 Assistant

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Post: #18
RE: How does your CPAP pressure compare to your predictive value?
IDRIck: If you are wondering about needing an oximeter, you probably need an oximeter. Smile

Without CPAP, I was getting about 140 events...all night....but the de-sats were well down in 70% area. (my poor brain)
If I were you, I'd get a decent oximeter that you wear on your wrist and it wont bother you as much at night.
Then watch to reports it churns out like a hawk.
Wink
Just my 2 cents worth.

Best of luck.
12-18-2012 04:02 PM
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PaulaO2 Offline
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Posts: 8,067
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Machine: S9 Autoset
Mask Type: Full face mask
Mask Make & Model: F&P Simplus
Humidifier: H5i
CPAP Pressure: 14-20
CPAP Software: SleepyHead

Other Comments: Ehlers-Danlos Syndrome, Hypermobility Type; chronic sarcasm

Sex: Undisclosed
Location: western NC, USA

Post: #19
RE: How does your CPAP pressure compare to your predictive value?
Yes, I am saving up to get one of the wrist versions. I wore mine last night and have a sore spot on my finger. It will be there for several days. Whenever I am in the hospital, they have to keep moving it to different fingers to keep from giving me a pressure sore.

Yeah, I'm special.

PaulaO2
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Breathe deeply and count to zen.

INFORMATION ON APNEA BOARD FORUMS OR ON APNEABOARD.COM SHOULD NOT BE CONSIDERED AS MEDICAL ADVICE. ALWAYS SEEK THE ADVICE OF A PHYSICIAN BEFORE SEEKING TREATMENT FOR MEDICAL CONDITIONS, INCLUDING SLEEP APNEA. INFORMATION POSTED ON THE APNEA BOARD WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.
12-18-2012 07:34 PM
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Shastzi Offline

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Posts: 1,174
Joined: Dec 2012

Machine: ResMed S9 Autoset
Mask Type: Full face mask
Mask Make & Model: FitLife Total face mask
Humidifier: F&P HC150 with Hybernite heated hose.
CPAP Pressure: 15cm-20cm H2O (auto)
CPAP Software: SleepyHead Other Software

Other Comments: CMS50-F wearable Oximeter; Software: SPO2 Assistant

Sex: Undisclosed
Location: Florida, USA.

Post: #20
RE: How does your CPAP pressure compare to your predictive value?
The clothespin style oximeter was definitely a design by DeSade Engineering Consultants. Big Grin
12-18-2012 09:39 PM
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