Exhalation pressure relief

Exhalation Relief is a CPAP feature that lowers the pressure on a CPAP machine when the patient exhales in an effort to make breathing more comfortable. CPAP machines provide continuous positive airway pressure, making it easier for the patient to inhale, but harder to exhale. Exhalation Relief generally offers three possible settings: 1, 2 or 3, with each number signifying the number of cm H20 of pressure reduction. (A setting of 1 provides the least pressure relief; a setting of 3 provides the greatest relief).

There are several brand-specific terms for Exhalation Relief. ResMed uses the term EPR. Philips-Respironics uses the termA-Flex for its APAP machines, Bi-Flexfor its BiPAP machines, and C-Flex for its CPAP machines. --Sleepster 04:11, 2 February 2012 (UTC)

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