An electrocardiogram can show if a previous heart attack has occurred or is in process. Blood tests can look for enzymes that leak into the bloodstream when a heart attack has occurred. Imaging tests, such as cardiac computerized tomography (CT) or cardiac magnetic resonance imaging (MRI) can show if there are any structural abnormalities present in the heart.

nattrass / Getty Images
This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.