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

Why a sudden increase in central apneas?
#11
(02-07-2014, 03:51 AM)igdoc Wrote: New to this forum but not new to this.
Hi igdoc, welcome abaord
How you like the machine "Sefam auto evolve"
http://www.sefam-medical.com/configurations.html

Post Reply Post Reply
#12
Thanks Zonk,
The SEFAM is a French APAP machine derived from the Sandman. It is small and quiet with a built in humidifier. It tries to distinguish between central (clear airway) and obstructive events but (same as other APAP devices) is not 100% accurate at this. Before discovering that I had Complex Sleep Apnea with 30 central events per hour, the SEFAM would keep pushing up the pressure because some of the events were wrongly classed as obstructive. APAP machines and CPAP induced central events don't go well together!

I have managed to avoid needing an ASV machine by using CPAP mode at a low pressure and, most importantly, by disabling the exhalation relief (CFEX, AFLEX, EPR) to reduce the hyperventilation induced central episodes.

(Sorry in my first post I missed that this topic is relatively old but hopefully still relevant to the small percentage who have high numbers of central events)
Post Reply Post Reply
#13
Hi igdoc,
WELCOME! to the forum.!
trish6hundred
Post Reply Post Reply


#14
Why does bilevel (compared to CPAP) induce hyperventilation? I know that hyperventilation blows off blood CO2 reducing ones central ventilation drive. But, what is it about bilevel that induces HV?

I'm seeing some CAs; and I am wondering is I should up my EPAP pressure by 1 cm-H2O to see if this reduces CAs.

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.
Post Reply Post Reply
#15
Be sure to use SleepyHead to look at your airflow waveforms and figure out how "real" and how serious the centrals are. Sometimes the machine will flag something that's not that concerning once you look at the waveforms. Or it might be long and complete apneas that are even more worrying.

Step one would probably be to undo the changes and see what happens. Then maybe experiment with a few other changes, such as lower pressure without bilevel, and monitor AHI and centrals.
Get the free SleepyHead software here.
Useful links.
Click here for information on the main alternative to CPAP.
If it's midnight and a DME tells you it's dark outside, go and check it yourself.
Post Reply Post Reply


Possibly Related Threads...
Thread Author Replies Views Last Post
  central apnea jerry1967 22 452 07-24-2017, 07:51 AM
Last Post: jerry1967
  Increase in clear airway events SCMimi 5 158 07-22-2017, 01:50 PM
Last Post: trish6hundred
  [Treatment] New with central apnea petnew 9 282 07-15-2017, 12:57 PM
Last Post: pholynyk
  reading high amount of central apneas while on machine but not sleeping ronstar77 55 1,635 07-09-2017, 11:35 AM
Last Post: ronstar77
  Sudden daytime sleepiness JackieW 7 364 06-30-2017, 06:11 PM
Last Post: Mosquitobait
  [CPAP] Sudden Increase in Pressure CPAPGuy 2 252 06-29-2017, 04:47 PM
Last Post: trish6hundred
  Weight Loss = Fewer Or No Apneas? harmon k 14 568 06-24-2017, 04:44 PM
Last Post: C0mbe

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.