Hello Guest, Welcome to Apnea Board !
As a guest, you are limited to certain areas of the board and there are some features you can't use.
To post a message, you must create a free account using a valid email address.

or Create an Account


New Posts   Today's Posts

C-Flex setting 3 resulting crazy high AHI
#1
I am trying to use my P10 nose pillow, so I have tried to set the Respironix Auto setting to C-Flex to ease my exhale pressure. I got a huge AHI while sleeping apparently quite comfy. I set it back to nothing and I am back to so so normal average. I am using antihistamine therefore I suspect my AHI is off a bit (compared to drug free nights)
Should I try A-Flex or just let it go..
Post Reply Post Reply
#2
Don't use A flex. It reduces both the inhale and exhale pressure. If you use C Flex it only reduces the exhale pressure. You may have to raise your minimum pressure up 1cm to 2cm when you using C flex.
Post Reply Post Reply
#3
Thank you so my min 11cm now it should be 12cm or 13cm? Am I understanding you correctly?
Post Reply Post Reply


#4
I'd try it at 12cm first.
Post Reply Post Reply
#5
Tim, what kind of events increased? OA, CA or H or all of the above?
Post Reply Post Reply
#6
Mainly obstructive but the others too
Periodic Breathing 19.09%
Large Leak 9.53%
Clear Airway 2.39
Obstructive 7.87
Hypopnea 2.15
Flow Limitation 0.00
RERA 0.72
Vibratory Snore
0.00
Vibratory Snore (VS2)
0.95
Breathing Not Detected
0.00%
Pressure Pulse
6.20
Post Reply Post Reply


#7
Obstructives often occur during exhale, so reduced support from C-flex/EPR could have an impact on that if the machine is not reacting quickly enough.

I would be hesitant to increase minimum that high, particularly if your max isn't much above that.
Perhaps try reducing the C-Flex level a notch to find a compromise between where you were and where you are now?
I'm not familiar with the Respironics systems.... ResMed uses "EPR" and it can be set to differ the level so exhale is 1, 2, or 3 cm below the current pressure.

I tried reducing my EPR a few weeks ago and did OK at "1", but when I set it to ramp-only, or turned it off completely, I had huge leakage problems and very unrestful sleep (no change in AHI). I ended up going back to "2" and full-time.
-- Rich
Download SleepyHead here
Organize SleepyHead Data
Post SleepyHead Data from Imgur

INFORMATION ON 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 WEB SITE AND FORUMS ARE PERSONAL OPINION ONLY AND NOT NECESSARILY A STATEMENT OF FACT.

Post Reply Post Reply
#8
On a Philips machine, I always did better with Flex at 1 or maybe 2. Like you, I experienced higher event rates at 3. No point in looking for technical reasons, we all just have to find out what works best, and that involves some trial and error. Your trial of 3 worked to give you a the lesson that CFlex at 3 is not your cut of tea. Smile
Post Reply Post Reply
#9
Thanks, I am lowering my C-Flex number to see what's what.....
Post Reply Post Reply


#10
Yes, I have the same experience, With CFlex+ at 3, resistance is so low that I sometimes have trouble exhaling at all, my throat flap seems to close like a valve, try one or two. I'm currently on 2
Post Reply Post Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  High AHI while awake? DanGagner 11 274 01-16-2018, 10:31 PM
Last Post: CB91710
  setting help 493dart 13 272 01-14-2018, 05:40 PM
Last Post: Walla Walla
  [CPAP] Setting [what to set for better sleep] RK Dutta 8 289 01-14-2018, 03:19 AM
Last Post: ajack
  Turn flex off? RLSdss 5 156 01-13-2018, 10:50 AM
Last Post: OpalRose
  Questions on a setting for a AirSense 10 Auto pupcamper 10 454 01-10-2018, 07:53 PM
Last Post: Healthkares
  [CPAP] setting up S9 Escape Auto with H5i Humidifier RK Dutta 2 114 01-09-2018, 08:07 AM
Last Post: Walla Walla
  APAP Setting Query johanlon 10 298 01-06-2018, 09:35 PM
Last Post: johanlon

Forum Jump:

New Posts   Today's Posts




About Apnea Board

Apnea Board is an educational web site designed to empower Sleep Apnea patients.

For any more information, please use our contact form.