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, including Philips-Respironics' A-Flex and C-Flex and ResMed's EPR and Bi-Flex.

Exhalation Pressure Relief (EPR) is a . When using a CPAP machine, many patients find it difficult to exhale. The . EPR lowers the pressure slightly when the patient is exhaling to help with this issue. The level of EPR can be set to 1, 2, or 3; usually by the patient as it is most likely considered by the prescribing physician to be a comfort feature, meaning it shouldn't impact the effectiveness of the CPAP therapy.

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