A heart attack, or myocardial infarction (MI), happens when blood flow to your heart suddenly becomes restricted or blocked. This is commonly caused by a buildup of fats and/or cholesterol in the coronary arteries that carry blood to the heart. Without blood flow, the heart muscle can become damaged and die.
Diagnosing a Heart Attack
If you’re experiencing a heart attack, you need fast, effective care. Call 911 immediately to get to a hospital quickly.
At Duke, doctors diagnose a heart attack using an electrocardiogram (EKG), which identifies abnormal electrical activity in the heart, blood tests to measure proteins that are released after a heart attack, and imaging tests to detect heart damage.