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C-Flex

C-Flex lowers the pressure at the beginning of exhalation when many people find therapy most uncomfortable. The amount of pressure relief is based on your breathing pattern and your C-Flex setting. With three C-Flex settings, you have the ability to select a greater or lesser degree of pressure relief that is right for you.

Your device should be set up with a preset C-Flex setting. You can try other settings by simply pressing the C-Flex button on the front of your device. You may also change the C-Flex setting using the control buttons and display screen. Press the right arrow to scroll to the C-Flex settings page. A screen with three C-Flex settings will appear. Use the C-Flex or plus and minus buttons to increase or decrease the setting. Press the stop/start button to save your setting and return to the mail menu.

Ultimately C-flex is used to make CPAP more comfortable. Given that the pressure is only reduced when you breath out it doesn't change your pressure needs. A lower exhalation pressure means easier breathing, reduced mask leak and overall greater comfort.