Non-rebreather masks are used to deliver oxygen therapy to people who require high-concentration oxygen but aren’t in need of breathing assistance. They’re considered low-flow oxygen delivery systems.

Wearing a face mask is one way to help prevent the spread of the COVID-19 virus, according to health care officials. However, they are sometimes uncomfortable and confining and have even become a ...

Editor's note: Find the latest COVID-19 news and guidance in Medscape's Coronavirus Resource Center. Wearing a mask to protect against transmission of COVID-19 does not decrease oxygen saturation, ...

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Doctors and other healthcare workers are taking to Twitter to show that their blood oxygen levels are completely normal while wearing masks. As compulsory mask-wearing laws become more common across ...