ST-elevation myocardial infarction

ST-elevation myocardial infarction (STEMI) is a serious heart attack caused by a complete blockage of blood flow to part of the heart muscle. This blockage usually results from a blood clot forming on a ruptured plaque in a coronary artery. The blockage prevents oxygen-rich blood from reaching the heart tissue, leading to damage or death of heart cells. On an EKG, this event shows as an elevated ST segment. Prompt treatment, such as emergency procedures to restore blood flow, is critical to limit heart damage and improve survival.