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Cardiac catheterization is a medical procedure that cardiologists, or heart specialists, use to evaluate heart function and diagnose cardiovascular conditions. During cardiac catheterization, a long narrow tube called a catheter is inserted into an artery or vein from either in your groin, neck, or arm. This catheter is threaded through your blood vessel until it reaches your heart. A dye can be injected through the catheter that allows your doctor to look at the vessels and chambers of the heart with the use of a special X-ray machine. Once the catheter is in place, your doctor can use it to run diagnostic tests.
This device is a catheter (long plastic tube) that is connected to a plastic and metal reservoir (see the picture below). An interventional radiologist will place the port in your chest. This provider is a doctor or a physician assistant with special training in doing this kind of procedure. When the catheter is placed in your chest, the catheter tip will be in the large vein that empties into your heart.