The Stress Test as an Efficient Diagnostic Tool in Medicine

The cardiologists most important resource is the stress test when a diagnosis needs to be made to look for heart disease of any kind. Doctors, looking to achieve the best results, must work with highly trained technicians while performing the stress test. Different tests are required to diagnose different conditions and they all have their very own unique sets of requirements. The tests that are performed to identify specific cardiac diseases are greatly influenced by the specific tests as well as other conditions. The one thing doctors need to find out is how much stress the heart can handle before it is impacted and altered by the stress. most people are familiar with the exercise stress test though it is only suited for one specific application.

The nuclear stress test measures blood flow to the heart. This is a test that is designed to be used in both exercise conditions and at rest conditions. The images are possible because of radioactive compounds, which give the test its name by the way, that are used during the test. The conditions of resting and exercise are important for this test so it must be performed during these times. There are a few differences such as the fact that the imaging aspect is performed immediately after exercising on a treadmill. That way the doctor and technicians can capture the heart’s movements while still in the stressed condition.

The Isotope stress test a regular form of stress test. In the case of this test, isotope represents a group of chemicals that have very low radioactivity levels. Another common name for the isotope stress test is nuclear stress test. One of these isotopes can be Thallium.

Generic trade names are Cardiolite and Myoview, and they refer to a specific combination of nuclear isotopes used. A lot depends on the particular method used for the test and another common name for a certain type of test 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.

The degree of reliability of the isotope stress test depends on several important factors.

A particular heart rate must be reached and the image must also be quite clear. A reliable diagnosis can be achieved in practically 85% of people who have coronary artery disease if all these conditions are satisfied. Since there are plenty of other factors that have an impact on accuracy, there is little chance of obtaining an infallible diagnosis. Of course there are also false positives in addition to a range of conditions that can interfere with making an accurate diagnosis. A cardiologist will then analyze the pictures to determine if there are any problems, which could be structural or functional. A nuclear stress test image will show a big contrast between areas that have restricted or reduced blood flow and those that have regular blood supply, which is why they are so useful.

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