EPR, C-Flex, A-Flex, Bi-Flex — exhalation pressure relief explained
At homemedix , patient who cannot tolerate a CPAP exhalation pressure relief at 12 cmH₂O often tolerates the same prescription with pressure relief during exhalation — the machine drops the pressure by 1–3 cmH₂O for the expiratory phase, letting the patient breathe out against a lower pressure before the next inspiration reinstates the full prescribed value. This feature, under various

