At INTEGRIS Heart Hospital diagnostic catheterizations are conducted to determine problems with blood supply to the heart and other areas of the body and are usually done after a person experiences chest pain. The procedure will determine narrowing or clogging of the arteries. (Also called: Cardiac Cath, Coronary Arteriogram, Coronary Angiogram) In cardiac catheterization a very small hollow tube, or catheter, is advanced from a blood vessel in the groin or arm through the aorta into the heart. Once the catheter is in place, several diagnostic techniques may be used. The tip of the catheter can be placed into various parts of the heart to measure the pressures within the chambers. The catheter can be advanced into the coronary arteries and a contrast dye injected into the arteries.