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Everyday EMS
by Greg Friese

Oxygen Therapy and Respiratory Pathogens

By Greg Friese, EMS1 Editor-in-Chief

Non-rebreather masks are a physical barrier to viruses contained in droplets, but they don’t filter the patient’s exhaled air. The FLO2 Max Filtered Oxygen Therapy Mask available from filters the patient’s exhaled air.

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About the author

Greg Friese is Editor-in-Chief of He is an educator, author, paramedic, and marathon runner. Ask questions or submit tip ideas to Greg by e-mailing him at
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