A heart attack, or myocardial infarction (MI), is permanent damage to the heartmuscle. "Myo" means muscle, "cardial" refers to the heart, and "infarction" means death of tissue due to lack of blood supply.
A heart attack, or myocardial infarction (MI), is permanent damage to the heartmuscle. "Myo" means muscle, "cardial" refers to the heart, and "infarction" means death of tissue due to lack of blood supply.