The Respironics product managers stated the fact that the C-Flex setting was NOT equivalent to the actual pressure relief:
Many believe that the C-Flex setting is equivalent to the actual pressure relief (e.g., C-Flex Setting of 1 = 1 cm H2O pressure). This is not correct.
The old 2003 C-Flex brochure has been updated, the new 2005 brochure contains corrected graphs and
more accurately represents the indistinct pressure drop of C-Flex, dispelling the notion of a set 1cm drop per setting.
Much as it clearly pains you, Mr. Hutto's explanation happens to be factual and correct.
This is all about the facts, and those are the facts. Your personal vendetta against Mr. Hutto has nothing to do with the facts.There is no "up to the setting" principle at all. The exhalation relief at a setting of "1" can be less than 1cm, it can be 1cm or it can be more than 1cm depending on the forcefulness of the beginning of exhalation. Let me state it again very clearly, the numeral "1" in the Cflex setting has not relation whatsoever to "1cm". It wasn't designed to be 1cm and it won't work out to be 1cm except once in a while by happenstance. It ain't 0cm to 1cm with a setting of "1", it ain't 0cm to 2cm with a setting of "2" and it ain't 0cm to 3cm with a setting of "3", no matter how many times or how forcefully you repeat it.




