DUBLIN, Ireland -- A doctor based in Dublin, Ireland, has debunked the idea that a face mask lowers oxygen levels. In fact, he's shown that even wearing several has no effect. This video shows Maitiu ...

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 ...

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 ...

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 ...