The demonstration does not show what it claims to show. Studies have repeatedly found that cloth masks used to fight the spread of COVID-19 do not unsafely reduce oxygen flow. A viral video uses a ...

A new study suggests that face masks have a negligible negative effect on the levels of carbon dioxide and oxygen that a person breathes. All data and statistics are based on publicly available data ...

If you've ever traveled on an airplane, you know that masks can drop down to supply oxygen in the case of an emergency. Airline oxygen masks have about a 15-minute supply and typically fall when an ...

Preoxygenation with a bag-valve-mask device did not reduce the risk for hypoxemia compared with preoxygenation with a face mask during emergency tracheal intubation in the emergency department (ED) or ...