A heart attack happens when one or more coronary arteries that supply blood to the heart become blocked, resulting in the death of heart tissue. This is usually caused by coronary artery disease (CAD)—often called simply “heart disease.” In CAD, fatty deposits build up inside arteries, causing the arteries to harden and narrow. Fatty plaque deposits may rupture, resulting in a heart attack. Angina is a type of chest pain caused by CAD and warns of a critical blockage. During a heart attack, angioplasty with stent placement may help clear blocked arteries and heart damage. Other treatment options include bypass surgery and medications.