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CARDIAC CATH PROCEDURES (MINIMALLY INVASIVE) Diagnostic Cardiac Catheterization Definition Cardiac catheterization involves passing a thin flexible tube (catheter) into the right or left side of the heart, usually from the groin or the arm. Coronary angiography is a procedure that uses a special dye (contrast material) and x-rays to see how blood flows through your heart. It involves passing a thin flexible tube (catheter) into the right or left side of the heart, usually from the groin or the arm. How the Test is performed Coronary angiography is usually done along with cardiac catheterization. Before the test starts, you will be given a mild sedative to help you relax. An area of your body, usually the arm or groin, is cleaned and numbed with a local numbing medicine (anesthetic). The Cardiologist passes a thin hollow tube, called a catheter, through an artery and carefully moves it up into the heart. X-ray images help the physician position the catheter. Once the catheter is in place, dye (contrast material) is injected into catheter. X-ray images are taken to see how the dye moves through the artery. The dye helps highlight any blockages in blood flow. The procedure may last 30 to 60 minutes. Heart and Vascular Center How the Test Will Feel You will be awake and able to follow instructions during the test. You will usually get a mild sedative 30 minutes before the test to help you relax. Local anesthesia will be used to numb the site. You may feel some pressure at the site where the catheter is inserted. The test may last 30 to 60 minutes. Occasionally, a flushing sensation occurs after the dye is injected. After the test, the catheter is removed. You will feel a firm pressure at the insertion site, used to prevent bleeding. If the catheter is placed in your groin, you will usually be asked to lie flat on your back for a few hours after the test to avoid bleeding. Why the Test is Performed Coronary angiography/cardiac catheterization is done to get information about the heart or its blood vessels or to provide treatment in certain types of heart conditions. Considerations If a blockage is found, your health care provider may perform a percutaneous coronary intervention (PCI) to open the blockage. This can be done during the same procedure. References: Davidson CJ, Bonow RO. Cardiac Catheterization