cflex/aflex

Guest · Post by **Guest** » Thu Apr 17, 2008 3:24 pm

How much is the pressure reduction of cflex or aflex on exhale?

jules · Post by **jules** » Thu Apr 17, 2008 5:40 pm

Unknown

a setting of 3 is NOT 3 cm H2O drop

I understand that on the Resmed's with EPR a setting of 3 is a drop of 3 cm H20

Guest · Post by **Guest** » Fri Apr 18, 2008 3:09 pm

Is it truly an unknown?

Wulfman · Post by **Wulfman** » Fri Apr 18, 2008 3:14 pm

Anonymous wrote:Is it truly an unknown?

Not exactly. (from the way I understand it) The amount of pressure relief depends on the user's breathing.

I've been using a C-Flex setting of "2" since the beginning and in the MyEncore reports, it appears to be about a 1 cm drop in pressure.

Have you read this?

http://flexfamily.respironics.com/

Den

NightHawkeye · Post by **NightHawkeye** » Fri Apr 18, 2008 3:16 pm

Think so. It varies with breath volume. The older Remstars would show the decreased pressure in the LCD though. I don't know if the M-series still does that or not. Depending on your setting it can be a few cm reduction, at least that's what I seem to remember.

Regards,
Bill

Snoredog · Post by **Snoredog** » Fri Apr 18, 2008 3:25 pm

Cflex:
http://www.cflex.respironics.com/

Aflex:
http://www.aflex.respironics.com/

Biflex:
http://www.biflex.respironics.com/

Guest · Post by **Guest** » Fri Apr 18, 2008 6:15 pm

Thanks for the links and explanations.

rested gal · Post by **rested gal** » Fri Apr 18, 2008 8:47 pm

C-Flex -- Reduces pressure at the beginning of exhalation and returns to therapeutic pressure just before inhalation.

A-Flex -- Reduces pressure at the beginning of exhalation (like C-Flex.) A-Flex ALSO softens the pressure transition from inhalation to exhalation (like Bi-Flex in a bilevel machine) to provide additional comfort.

Unlike C-Flex, which happens only at the beginning of each exhalation, A-Flex works with the user’s entire breathing cycle. C-Flex is nice, but to me A-Flex feels smoother and more like natural breathing.

ozij write an excellent post about the difference between A-Flex and C-Flex here:
viewtopic.php?t=30021&start=15

Her link to Respironics' description of the two is the same link Den posted:
http://flexfamily.respironics.com/

GumbyCT · Post by **GumbyCT** » Fri Apr 18, 2008 9:30 pm

I think it also depends on the pressure. I know for me at 17cm Cflex felt like nothing=no reduction compared to Aflex.
I preferred the Aflex at that kind of pressure.