If I can hear the pulse, is the PulseDose still working?
If the pulse can’t be heard, look at the green PulseDose indicator–if it is lighting up, then the device is being triggered by inhalation. Or, hold the end of the cannula in front of your lips while inhaling through your mouth and feel the pulse. Remember to check the oxygen contents gauge to verify that there is an adequate supply of oxygen. If the 02 supply runs out, the green light will continue to illuminate, because the conserving device is still being triggered by inhalation. The audible alarm will sound to indicate that there is no oxygen left in the cylinder.
