Woman 'was dead for 75 minutes.' Docs explain the cause

A healthy 36-year-old Maryland woman essentially died of broken heart syndrome -- but came back to tell about it. Danielle Collins absolutely adores cats. She works at a rescue and even fosters kittens. She recently raised a litter, then had to say goodbye. Around the same time, she lost her father and was carjacked. This intensely stressful period came to a boiling point one day after she observed a cat having surgery. So, what caused a 36-year-old healthy woman to have a near-fatal heart attack? Doctors theorize it's a case of "broken heart syndrome," a weakening of the heart muscle triggered by intense emotional stress.