Introduction and Uses

Cardiac catheterization may be used as a diagnostic or treatment procedure. It involves advancing a catheter, a thin flexible tube, into the right or left side of the heart. Cardiac catheterization can provide information about the functioning of the heart. Cardiac catheterization is performed with fluoroscopy, an imaging technique, to record pictures of the heart as it beats. The results may identify heart defects, heart disease, heart enlargement, blood clots (embolisms), coronary artery blockage, valve problems, or aneurysm. As a treatment procedure, cardiac catheterization may be used to repair heart defects, open valves, or open arteries.

Test Procedure

A cardiac catheterization usually takes place in the hospital. You will be asked not to eat or drink for 6 to 8 hours before your procedure.

You will receive a mild sedative, but will remain awake during the test. A local anesthetic will numb the area where the catheter is inserted. The catheter may be inserted in an artery in your arm or groin area. You will be asked to remain still during the test. Your doctor will insert a dye to allow your heart and blood vessels to be viewed on an X-ray video picture. When the test is completed, the catheter is removed. Your doctor will review your results with you.