A-Flex question

On the respironics one machines, does the higher number mean more relief on the A-flex or less? I cant seem to feel the difference given that my pressures aren't that high to begin with. Thanks

Aflex set at 3 gives the most exhale relief, 1 gives the least. What are your pressures?

I am at 7.0 - 20.0 right now. Thanks for the input!

Tony

Since we cannot see your data, let's assume that your average pressure is 10. With A-flex at 3, you would inhale at 10 and exhale at 7. Whatever your inhale pressure was, your exhale pressure is 3 less.

AFlex, CFlex and BiFlex don't reduce the pressure like EPR does on the ResMed machines.
Totally different way of offering exhale relief. It is not a per cm reduction like EPR is.
http://aflex.respironics.com/
The amount of reduce is based on flow rate.

Mollete has explained in a way that I found more easily understood.
viewtopic.php?f=1&t=88991&hilit=+CPAP+Basics+re%3A

In reworking the Respironics definitions:

C-Flex reduces pressure at the beginning of exhalation and returns to therapeutic pressure just before inhalation. The level of pressure relief varies based on the patient’s expiratory flow and which of the three C-Flex settings has been selected.

C-Flex+ operates in fixed CPAP mode, providing flow-based pressure relief at the beginning of exhalation a la C-Flex, and softens the pressure transition from inhalation to exhalation a la A-Flex.

A-Flex works in the auto-CPAP mode, providing flow-based pressure relief at the beginning of exhalation a la C-Flex, and softens the pressure transition from inhalation to exhalation.

Take a deep breath and hold it. Exhale. Take a deep breath but move smoothly into exhalation. That's A-Flex.

Take a deep breath, then exhale half. Inhale again and exhale halfway. Inhale again and exhale completely. That's C-Flex.

The numbers of x-Flex are just reference numbers, and C-Flex effect will also increase the harder one exhales.

"+" is the I/E transition smoothing, so since A-Flex already has it, A-Flex+ would be A-Flex - A-Flex.