Diagnosing Coronary Artery Disease (CAD)
Coronary artery disease (CAD) is a common type of heart disease that occurs when plaque, a substance made of cholesterol and other fats, builds up on the walls of the coronary arteries. Diagnosing CAD involves a combination of medical history review, physical examination, and various tests. These tests help confirm the diagnosis and determine the type, severity, or stage of CAD. Here are the examinations, screening tests, and procedures commonly used to diagnose CAD:
- Electrocardiogram (EKG): This test monitors the electrical signals that travel through your heart. It can help determine if you've had a heart attack and provide information about your heart's electrical activity.
- Echocardiogram: This imaging test uses ultrasound waves to create a picture of your heart. It helps evaluate how well your heart is functioning and can reveal any abnormalities.
- Stress test: This test measures the stress on your heart during physical activity and while at rest. It monitors your heart's electrical activity while you walk on a treadmill or ride a stationary bike. If you're unable to perform physical exercise, certain medications can be used instead for stress testing.
- Cardiac catheterization: During this procedure, a special dye is injected into your coronary arteries through a catheter inserted through an artery in your groin or wrist. The dye enhances the radiographic image of your coronary arteries, helping identify any blockages.
- Computed tomography (CT) scan: A painless imaging test that allows doctors to visualize the heart and the coronary arteries.
- Coronary artery calcium scan: This is a specialized CT scan that can measure the amount of calcium in the walls of your coronary arteries. It provides information about the presence and severity of plaque buildup.
- Cardiac CT Scan Angiography: This scan combines CT scanning equipment with a special dye injected into the blood to create detailed images of the coronary arteries. It helps visualize how much the arteries have narrowed.
- Blood Work: Healthcare professionals may request blood tests to check for elevated levels of substances that may indicate plaque buildup or decreased heart function.
- Chest X-ray: This imaging test provides a picture of your heart, lungs, and other chest structures.
These tests are typically performed by specialists such as cardiologists, who specialize in diagnosing and treating conditions related to the heart and blood vessels. Other specialists involved in diagnosing CAD may include primary care physicians, internists, or family medicine doctors.
Remember that while these tests are commonly used in diagnosing CAD, it's important to consult with a healthcare professional who can evaluate your specific situation and provide personalized advice based on your medical history and symptoms.