Coronary Catheterization
Sutter Heart & Vascular Institute

Why is the doctor performing this test?

To determine if there is blockage (plaque build up or atherosclerosis) within the coronary arteries which reduces the flow of oxygenated blood to the heart.

What is the test?
A coronary catheterization (also called a cath) is a minimally invasive diagnostic test which allows your doctor to see inside your coronary (heart) arteries. While taking X-ray pictures, your doctor will guide a small tube-like device called a catheter inside your coronary arteries and inject an X-ray dye, allowing him or her to visualize areas of plaque buildup in the arteries. If this plaque buildup (also called atherosclerosis) is left untreated, the heart artery can become narrowed or occluded, which can result in a heart attack.

Please view the Coronary Catheterization Animation for a detailed visual explanation of this procedure.

Where is the test performed?
In the Cardiac Catheterization Lab.

How long does this test take?
Approximately 45 minutes to an hour.