What is EPR?
ResMed defines their comfort setting on their machines as EPR - Expiratory Pressure Relief. EPR makes it easier to exhale or exhale deeply with each breath while on CPAP therapy. There are 4 settings for Expiratory Pressure Relief on a Resmed CPAP unit.
Example: Your Resmed CPAP machine pressure is set at 10cmH2O with function EPR 3, you'll inhale at 10cmH2O and exhale at a dropped pressure of 7cmH2O and will return to 10cmH2O on the inhale.