First Aid & CPR Basics : Using Masks & Barrier Devices for Germ-Free CPR

Hi again, I’m Michelle of the AD HOC Group.
No one expects a rescuer to put his life or health in jeopardy when assisting an injured
person. There are a number of diseases that can be spread by contact with body fluids,
such as saliva, blood, nasal discharge, tears, phlegm, et cetera. Also a rescue breath and
compressions may cause the victim to vomit especially if air gets into the stomach. Masks
with one way valves and filters provide safety from contamination and offer protection for
the rescuer. Here’s a mask with a filter and a one way valve. Once you’ve used a
barrier device, throw it away, these are disposable and not appropriate for reuse. Masks are available
from suppliers of rescue equipment and training supplies. The one way valve directs air from
you to the victim and then out this out this exhalation port. The filter is added for protection.
If you have a mask or think you will get one, this is how you will use it. Position the
head as you did for mouth to mouth breathing, place the narrow part of the mask on the bridge
of the nose, then lay the mask down so that the wider end rest across the chin, not under
the chin. Fit it the best you can. If you’re at the victim’s side, hold the mask so that
you can make a seal with one hand wrapped around the mouth piece and applying light
pressure around the nose area. With the other hand, lift the chin up into the mask to keep
the airway open. Don’t press the mask down around the mouth or up toward the nose because
you can close off the airway. Now blow two breaths through the opening of the mask each
about one second in length. For adults, pause about four seconds after each breath. For
children, pause about two seconds after each breath. When you’re alternating with compressions,
don’t try to balance the mask on the face, if it falls off let it go and then reposition
it when you come back to do the two breaths. So that’s it, congratulations. Now you’ve
learn to do CPR and choking relief and how to use a mask if you have one. We hope you
don’t ever have to use these skills, but if you do, now you know what you can do and
what you can’t do and why you’re doing it. Thanks for watching.


  1. these masks can be sterilized after use and the one way valve can be replaced with a new one way valve. You must hold the mask tight to the patients face to get a good seal. If the mouth closes the air can still enter the nose unless it is occluded by damage or fluids.

  2. this video has not demonstrated how to do CPR or choking technique, there may be other videos but this has not been a complete education in this video.

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