Users have reported a slow increase of the CO 2 -curve when the gas sample line of the gas measurement of a Dräger anesthesia machine is connected to the gas sampling port of the affected filters/HME. The comparatively slower increase in the CO 2 -curve only occurs when the gas sample line is connected to the gas sampling port of an affected filter/HME. Other setups are not affected. Recall start date: May 23, 2025