This is a painless test that uses sound waves to show images of the heart muscle contracting and relaxing as well as the opening and closing of the heart valves. With these scans, a small amount of radioactive chemical is injected into your vein. These chemicals highlight the heart muscle and chambers in pictures taken with a special camera. If your heart rhythm is too slow, giving you symptoms such as dizziness, weakness, fainting, or shortness of breath, your physician may recommend placing a pacemaker to increase or control your heart rate. Stent Coronary stents are used at the end of an interventional procedure to help keep the artery open.
Stents are short stainless steel wire mesh tubes that are inserted on the end of a balloon catheter.
Replacement means that your own bad valve is removed and a new valve is put in its place.