A cardiac catheterization is a procedure that examines the heart. During this procedure, a physician can measure pressures inside the heart, take pictures of the arteries bringing blood to the heart, and assess how well the heart is pumping.
The procedure involves a cardiologist inserting a catheter into a blood vessel located in your arm, groin or neck and threading it to your heart. Through the catheter, a special dye is injected to help the cardiologist monitor blood flow and look for plaque buildup in arteries. In most cases, the procedure can be done on an outpatient basis.