Knowing the difference could save your life. Studies show that the people who have symptoms of a heart attack often delay – or wait to seek treatment – for longer than seven hours. At the first signs of a heart attack, call for emergency treatment (911). Do not wait for your symptoms to “go away.” Early recognition and treatment of heart attack symptoms can reduce the risk of heart damage and allow treatment to be started immediately. Even if you’re not sure your symptoms are those of a heart attack, you should still be evaluated.