These are common terms used to describe pressure relief technology which soften the airflow during exhalation creating a more natural-like breathing experience. The most common pressure relief technology is found in the REMstar Respironics product line and is referred to as C-Flex. C-Flex kicks in as the patient exhales to slightly reduce the amount of pressure experienced and then immediately returns to the pressure you need as you begin to inhale.
EPR technology stands for Expiratory Pressure Relief
SoftX technology provides exhalation relief as well but this technology is different than the C-Flex and EPR technology. It uses an active, variable resistance valve with a constant motor speed to regulate quick and natural pressure changes. With SoftX the pressure during exhalation is NOT reduced, the position of the valve changes to divert air away from the patient as they exhale.
The result of all these technologies to increase the patient’s comfort levels. They all have three comfort levels to determine the degree of pressure drops from inhalation to exhalation.