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UARS
#41
RE: UARS
What in the HECK just happened?  Why am I having AHI over 20 with all clear airway events??!!??!!
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#42
RE: UARS
(10-22-2019, 05:02 AM)tarah Wrote: What in the HECK just happened?  Why am I having AHI over 20 with all clear airway events??!!??!!
Hi, 
 it appears you set a completely unbalanced EPAPmin 4.0 << PS: 6.0. I expererienced sometimes some few months ago and learned a bit on this. This is the cause of high AHI/CA's...you may want take a look on my thread, and posts...
http://www.apneaboard.com/forums/Thread-...the-Answer

good luck
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#43
RE: UARS
(10-22-2019, 07:28 AM)mper6794 Wrote:
(10-22-2019, 05:02 AM)tarah Wrote: What in the HECK just happened?  Why am I having AHI over 20 with all clear airway events??!!??!!
Hi, 
 it appears you set a completely unbalanced EPAPmin 4.0 << PS: 6.0. I expererienced sometimes some few months ago and learned a bit on this. This is the cause of high AHI/CA's...you may want take a look on my thread, and posts...
http://www.apneaboard.com/forums/Thread-...the-Answer

good luck

Yes; you swapped the EPAP and PS tarah.
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#44
RE: UARS
(10-22-2019, 07:28 AM)mper6794 Wrote:
(10-22-2019, 05:02 AM)tarah Wrote: What in the HECK just happened?  Why am I having AHI over 20 with all clear airway events??!!??!!
Hi, 
 it appears you set a completely unbalanced EPAPmin 4.0 << PS: 6.0. I expererienced sometimes some few months ago and learned a bit on this. This is the cause of high AHI/CA's...you may want take a look on my thread, and posts...
http://www.apneaboard.com/forums/Thread-...the-Answer

good luck
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#45
RE: UARS
(10-22-2019, 07:52 AM)mper6794 Wrote:
(10-22-2019, 07:28 AM)mper6794 Wrote:
(10-22-2019, 05:02 AM)tarah Wrote: What in the HECK just happened?  Why am I having AHI over 20 with all clear airway events??!!??!!
Hi, 
 it appears you set a completely unbalanced EPAPmin 4.0 << PS: 6.0. I expererienced sometimes some few months ago and learned a bit on this. This is the cause of high AHI/CA's...you may want take a look on my thread, and posts...
http://www.apneaboard.com/forums/Thread-...the-Answer

good luck

To be clear, I think she just made a mistake with the setting, and that it wasn't intentional. Was supposed to be PS 4, and EPAP min 6.
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#46
RE: UARS
Check your settings and be sure PS is set to 4. Things should return to normal pretty quickly. We know now 6.0 is too much PS for you.
Sleeprider
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#47
RE: UARS
...Just one thing: this unbalanced day could become an invaluablel one to, ultimateley, semi-quantively, fine tune your EPAPmun and PS, on account of resulting Very low overall respiratory rate.
Good
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#48
RE: UARS
To expand just a bit on what mper6794 is saying; your tidal volume with PS 6.0 averaged 480 mL per breath, however your respiration rate dropped to 11.8 breaths per minute resulting in a minute vent of 5.63 L/min.

By comparison, your previous night with PS 4 showed an average tidal volume of only 400 mL, with respiration rate of 12.4 BPM and a minute vent of 4.88 L/min.

The increased ventilation rate on each breath resulted in a drop of CO2 in your blood stream, which reduced your respiratory drive, or need to breathe. Overall, you actually had a higher respiratory volume and ventilation rate with the high PS, and this resulted in breathing pauses because you didn't "need" as many breaths. This is a natural and normal respiratory response. This is really easily corrected, but you might not have felt that bad in spite of the high AHI. I'm curious how you felt about that night before looking at the numbers.
Sleeprider
Apnea Board Moderator
www.ApneaBoard.com

____________________________________________
Download OSCAR Software
Soft Cervical Collar
Optimizing Therapy
Organize your OSCAR Charts
Attaching Files
Mask Primer
How To Deal With Equipment Supplier


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.
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#49
RE: UARS
You just made your breathing too efficient. You are washing out too much CO2 from your blood driving down your pCO2 and your chemo receptors are saying you have no need to breathe.
Back off your pressure support
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#50
RE: UARS
I had a hard time going back to sleep after the 2:30 wakeup.  But oddly enough, I feel pretty good.  Like I actually slept soundly, something I haven't felt in recent history!  I laid down on my back (not able to sleep on my back for years) at 10:30 and didn't move a muscle and woke up in the exact same position at 2:30!!  That has never happened in the past 10 or 15 years.
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