C-flex question.

schnertling · Post by **schnertling** » Tue Oct 23, 2007 4:10 pm

Is therapy more effective if the C-flex setting is at "1" vs "3". I got the impression from a RT that if the pressure drops during exhalation, the effectiveness of the machine is decreased...so it would be "better" to have it set at "1".

But if C-flex decreased the benefit of CPAP, why then do machines have it?

Wulfman · Post by **Wulfman** » Tue Oct 23, 2007 4:28 pm

schnertling wrote:Is therapy more effective if the C-flex setting is at "1" vs "3". I got the impression from a RT that if the pressure drops during exhalation, the effectiveness of the machine is decreased...so it would be "better" to have it set at "1".

But if C-flex decreased the benefit of CPAP, why then do machines have it?

It's quite possible your RT is a moron, too.

C-Flex is a "comfort" setting for exhale relief. There is a slight drop during the initial exhale but unlike the ResMed machines that DO drop 1, 2 or 3 cm. in pressure in their EPR numbers, C-Flex is a "relative" drop and is not in actual cm of pressure. The therapy is not compromised. The pressure starts to increase before the end of your exhale.

There are a number of links in this URL. Maybe they'll satisfy your inquiry.

http://flexfamily.respironics.com/resources.aspx#cflex

Den

sleepycarol · Post by **sleepycarol** » Tue Oct 23, 2007 4:30 pm

I don't know the answer to that one but my sleep doctor prescribed a c-flex setting of 3 for me.

It would appear to me that if it interferred with treatment they (meaning the doctors) would tell their patients not to use it or set it at 1.

wabmorgan · Post by **wabmorgan** » Tue Oct 23, 2007 11:12 pm

[quote="schnertling"]Is therapy more effective if the C-flex setting is at "1" vs "3". I got the impression from a RT that if the pressure drops during exhalation, the effectiveness of the machine is decreased...so it would be "better" to have it set at "1".

But if C-flex decreased the benefit of CPAP, why then do machines have it?

Panhandler · Post by **Panhandler** » Tue Oct 23, 2007 11:49 pm

Even if CFLEX did decrease therapy efficacy somewhat, if it makes compliance possible, that's a net gain.

Snoredog · Post by **Snoredog** » Tue Oct 23, 2007 11:58 pm

there is no difference in efficacy from 1 to 3. The reason is Cflex ONLY momentarily drops pressure at the beginning of exhale and rapidly comes back up to base pressure, this momentary relief is enough to offer exhale relief.

Even more relief can be found using A-Flex which rounds off the sharp edges of inhale in addition to relief found in Cflex.

Here is Cflex:
http://cflex.respironics.com/

Here is Aflex:
http://aflex.respironics.com/

You'll notice Aflex is very similar to BiFlex found on the Bipap:
http://biflex.respironics.com/

All 3 relief options hold US and other patents, other manufacturers would like you to believe theirs is the similar but they are not.

C-flex question.

C-flex question.

Re: C-flex question.

Re: C-flex question.