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 ...

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 ...

Dear Doctors: I get crushing headaches every fall, which I’ve always assumed are part of having allergies. But a specialist at our local medical center diagnosed me with cluster headaches. She says ...