Dr. Mehmet Oz demonstrates how to operate an automated external defibrillator, which helped save the life of celebrity trainer Bob Harper during a heart attack. When "The Biggest Loser" trainer Bob ...

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AEDs, or public defibrillators, are designed to be used by anyone. Try to stay calm and follow the directions that the device gives you. Share on Pinterest Aria sandi Hasim/Getty Images A ...

Cardiac arrest, which often leads to a heart attack, is frighteningly common: every minute of every day there is another victim, according to the American Red Cross. Almost 80% of cardiac arrests ...

More than one million Americans have heart attacks each year. About 300,000 Americans have sudden cardiac death each year. And for about half of them, it was the first sign of any heart trouble.