A Look at Cardiac Tests

When under increased stress or pressure, the human anatomy is meant to perform particular functions. Certain, predictable biochemical reactions also take place. One of the ways your body reacts to stress is for your heart to work harder, or your cardiac output increases. In other words, both heart rate and blood pressure go up to provide the means necessary for the body to deal with the stress. A doctor will perform a stress test to determine how your heart can handle the extra demands, which is what stress tests excel at. If you are experiencing symptoms of heart ailments, then a cardiac stress test might be given to determine if there are any blockages in your cardiovascular system. Stress tests are really important because most times there are not any exterior symptoms of the problem when a person is relaxed. Or, any other problems that are not detected unless the heart is in a stressed state. This is a common issue because just like with other things, the problems are not noticeable until there other pressures that surface. There's a wide range of conditions in which doctors feel a stress test is the best choice. Doctors do not want to run the risk that they've overlooked anything. So in that case they could order a test so they can either eliminate a possible diagnosis for heart disease, or confirm their possible suspicions. It is very common when there are other symptoms or factors of heart disease present. Patients who have a higher than normal risk factor for heart disease are more likely to have stress tests ordered too. Sometimes people can have symptoms that could be caused by different conditions, and in that case a regular stress test may be helpful. Another very common group of tests falls under the general description of nuclear stress test. This type of test can be used with a number of different kinds of radioactive isotopes. The purpose of a nuclear stress test is to visualize or image healthy heart muscle that is functioning normally. The different areas of the heart will absorb the isotope and then become more lit up in an image. The final outcome will be to detect which sections of the heart are not getting the adequate blood supplies. This will then provide information about blockages. After the test is performed, a trained cardiologist will analyze the results and look for any structural or functional problems. Areas of normal blood supply contrast greatly with areas of reduced blood flow, which is why pictures from nuclear stress tests are so useful.