The difference between sudden cardiac arrest and heart attacks

The new year brings a lot of resolutions to exercise. And sometimes the cold weather also means more snow shoveling. All that exertion can be harmful to people with abnormal hearts by leading to sudden cardiac arrest. Dr. Gordon Tomaselli, director of cardiology at Johns Hopkins Hospital, talks about the difference between sudden cardiac arrest and a heart attack and what those at risk can do.

By Meredith Cohn, The Baltimore Sun

January 27, 2011