During times of increased stress, our bodies are designed to do certain things. The body also has predictable biochemical reactions. One way your body reacts to stress is by getting your heart to work harder, essentially increasing cardiac output. That simply means your blood pressure and heart rate both increase to help your body cope with the stressful situation. Stress tests are performed because they are considered the perfect method to gauge the strength of your heart as well as its limitations if higher demands are placed on it.
If you are noticing symptoms of heart disease, then a cardiac stress test might be ordered to check for blockage that may be 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. That really only makes sense in a lot of ways because just like any other mechanical system, the problems are not apparent until there is a higher demand placed on it.
A regular type of stress test is the Isotope stress test. The word, isotope, in this situation is referring to a group of very mildly radioactive chemicals used in this test. Another common name for the isotope stress test is nuclear stress test. In addition, specific references can be made to the isotopes such as thallium.
Some trade names include Cardiolite and Myoview, and they signify a certain combination of nuclear isotopes being used. Much depends on the specific method employed for the test, and another common name for a specific type is the dual isotope stress test. Since the healthy part of the heart will absorb more of this radioactive tracer, it will be clearly visible to doctors after a scan.
A nuclear stress test uses radioactive isotopes to produce an image of the functioning of the heart during a stressful situation. As you are aware, a heart under stress is more likely to show if there are any cardiovascular problems. However, it is important for the doctor to obtain images of the heart during periods of rest as well. Therefore, these images are produced with the aid of isotopes injected into the blood stream. Every type of cardiac stress test has it finer points and a goal. They assist in helping doctors make the most accurate diagnosis available. Keep in mind that there are various conditions for every test that could possible affect each of the results and diagnosis.
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