Cardiac catheterization an X-ray examination used to provide an exact image of what your heart and your blood vessels look like. In local anesthesia a thin, delicate plastic tube — the catheter — is inserted in a peripheral artery and cautiously advanced into the heart. The heart’s vessels can thus be made visible and rendered accessible for therapy. In the hands of an experienced physician, cardiac catheterization is a safe and virtually painless method to treat a stenoses of coronary vessels. And yet — many people react with fear and a sense of unease when they learn about the necessity of an examination with a cardiac catheter. In this situation you will not be left alone: You will know exactly what to expect and who will treat you, with the best chance for optimal results.