The correct answer is: Infection .
Cardiac catheterization is a procedure that includes the insertion of hollow tube into a large blood vessel that leads to the heart for the examination of the heart working. It is used to measure the flow and the blood pressure of the heart in order to diagnose and potentially treat cardiovascular diseases and conditions. Complications of this procedure might be: bruising, bleeding, infections where the catheter is put into the body, allergic reactions to medications, damage of the artery..