coronary artery disease (CAD)

A narrowing or blockage of one or more coronary arteries (blood vessels that carry blood from the heart to the rest of the body) due to a buildup of calcium and fat that results in a hard plaque forming inside the artery. The narrowing or blockage of the coronary arteries by plaque results in decreased blood flow to the heart. Chest pain is the most common symptom of CAD, however, some patients may have no symptoms.