What Is Coronary Artery Disease?

Coronary artery disease (CAD) occurs when the coronary arteries become narrowed or blocked, most commonly as a result of atherosclerosis.

Reduced blood flow to the heart muscle can cause:

• Chest discomfort
• Shortness of breath
• Reduced exercise tolerance
• Fatigue

A complete or sudden coronary artery blockage can result in a myocardial infarction (heart attack).

Diagnosis and treatment depend on symptoms, risk factors, heart function, coronary anatomy, and the overall clinical situation.

Treatment may include lifestyle modification, preventive medical therapy, anti-anginal treatment, PCI/stenting, or coronary artery bypass surgery in selected patients.