Stress tests conducted on the heart using low dosage radioactive chemicals are known as nuclear stress tests. The idea of the test is to get a visualization of how blood flows through the heart.
Such tests are conducted by doctors in order to figure out whether or not a patient has sufficient or diminished blood flow. This way they can identify whether or not there is a restriction somewhere in the arteries or heart, because this is the reason for diminished blood flow. Nuclear tests can be performed on patients during exercise or while at rest. The name of stress test comes from the fact that exercise stresses the body, including the cardiovascular system.
Even if a heavier load is placed on it, your heart still needs to be healthy enough to perform correctly. There are many reasons a doctor could order a stress test, but all of them are to ensure you have a normal, healthy heart. The simple treadmill / exercise stress test is used a lot in medicine, nowadays. Both treadmills and stationary bikes can be used for these tests. When this test is given, a number of test leads are applied to the chest area to monitor the heart's electrical activity. The normalcy of the heart and its health will be revealed in an ECG. Conversely, a heart that is having difficulty with the demands placed on it will be also be reflected in the ECG.
A general type of stress test is referred to as the Isotope stress test. In the case of this test, isotope represents a group of chemicals that have very low radioactivity levels. The isotope stress test is another name for the 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. These tests are also differentiated according to the method employed, which is why they have different names, such as 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.
It is very important that your heart gets the right amount of blood supply during elevated stressful circumstances and levels of exercise. Stress tests might be administered for other things like trying to decide if a specific medication is good for a certain heart condition. These types of medications are usually prescribed for angina and for getting symptoms under control. Another very vital application is to find out how a specific medical procedure was formed such as bypass operations or the usage of stints. Plenty of times people will get irregular heartbeats over the years, and stress tests are a way to continue monitoring these. Once the test is completed, a cardiologist will examine the resulting images to identify any 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.
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