It's been six days since Buffalo Bills player Damar Hamlin collapsed on the field in front of millions. Many feared the worst. But just two days after suffering a cardiac arrest, he woke up and has ...

When someone collapses before your eyes, your first reaction might be stunned disbelief. Your second impulse, though, is likely wanting to help -- and you can. By calling an ambulance, starting CPR, ...

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 ...

Connie Harvey from the American Red Cross explains how to use an AED, an automated external defibrillator, when attempting to restart someone’s heart after they collapse. She says the first two steps ...

Sudden cardiac arrest is the leading cause of death here in the U.S. On average less than 10 percent of victims survive. AED devices are all around us, but do you know how to use them? An app on your ...

They’re becoming more available in public places–but how do you use a defibrillator machine? Dr. Troy Madsen talks about public defibrillators, when to use them, and how they might save someone’s life ...

July 26, 2010 — -- This morning on "Good Morning America," ABC News' senior health and medical editor Dr. Richard Besser demonstrated the proper way to use an automatic external defibrillator ...

Jon LaPook, M.D. is the award-winning chief medical correspondent for CBS News. Since joining CBS News in 2006, LaPook has delivered more than 1,200 reports on a wide variety of breaking news and ...

This is an archived article and the information in the article may be outdated. Please look at the time stamp on the story to see when it was last updated. ST. LOUIS – February is American Heart Month ...