What does a cardiac catheterization do ?

Takes a picture: Cardiac catheterization is used to take a picture of the arteries of the heart, the pumping chambers of the heart, the valves of the heart, and to make hemodynamics measurements regarding the function of the heart.

Catheterization : A site is numbed over the groin or radial artery. A catheter is introduced and passed under fluoroscopy to the heart where measurements and pictures are recorded. When done catheter removed, wound closed and patient recovered. The study provides accurate information about the heart and heart arteries for decision making and diagnosis.