- 45% of all heart attacks are silent
- Women are more likely to die from silent heart attacks than men
- Signs of heart attack may include shortness of breath, unexplained fatigue, jaw and upper back pain
(CNN)Every 43 seconds, an American has a heart attack. Most people immediately recognize chest pain as a symptom of heart attack, but only 27% of Americans are aware of all the major symptoms -- and that means many are missing the signs of an actual heart attack.