Overview: During a cardiac catheterization, your doctor will insert a tube into a blood vessel, and thread it through your body into a heart chamber. It is used to directly measure heart function and to perform certain treatments.
Cardiac catheterization is used to diagnose or treat many heart conditions. During this process, a long tube called a catheter is inserted into an artery or vein in your arm, neck, or groin, and is threaded through your blood vessels to your heart using x-ray guidance.
Mayo Clinic. (2019, June 4). Cardiac Catheterization. Cardiac catheterization - Mayo Clinic. Retrieved October 17, 2020, from https://www.mayoclinic.org/tests-procedures/cardiac-catheterization/about/pac-20384695#:~:text=Cardiac%20catheterization%20(kath%2Duh%2D,blood%20vessels%20to%20your%20heart.