Although all the details of Michael Jackson’s death are unknown the American Heart Association is reminding the public that it is important for people to know the signs and how to react quickly.  Dr. Clyde Yancy, president of the American Heart Association says “It’s a shame when someone his age dies so suddenly,”  Cardiac arrest can be reversed by defibrillation if it’s treated within a few minutes with an electric shock to the heart to restore a normal heartbeat.