Stress tests conducted on the heart using low dosage radioactive chemicals are known as nuclear stress tests. The test is designed to produce an image of the blood flowing to your heart muscles.
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. A patient can be exercising or resting throughout their nuclear test. The reason it is called a stress test is because the exercise puts stress on the body including the heart and overall cardiovascular system.
Your heart needs to have the normal capacity and ability to perform the heavy load placed on it. Ascertaining that your heart is healthy and normal is the main goal of a stress test, no matter the reason your doctor ordered it. The medical field uses the exercise, or non-nuclear, stress test extensively, today. Both treadmills and stationary bikes can be used for these tests. During the test, leads are connected to the chest to ascertain what the electrical activity of the heart is. An electrocardiogram will show a healthy and normal heart. The doctor will also be able to see in the ECG if you are having trouble with your heart. A cardiac stress test is given mainly because the doctor wants to know what is happening with the heart; whether or not it is healthy. There are also other motives behind the use of a stress test. A stress test can also be used, for example, to determine how much exercise is safe for one to perform. Stress tests are also used to gauge the likelihood of events such as a heart attack occurring. A doctor will always have a motive for getting you to undergo a stress test, especially considering that they are used to determine how healthy your heart is. Just because your doctor has demanded such a test doesn't mean you should presume that something is wrong.
Various factors can influence the reliability of the isotope stress test.
As an example, the image quality must be good and a certain heart rate achieved. If these vital conditions are satisfied, such a stress test can return a reliable diagnosis in almost 85% of subjects who suffer from coronary artery disease. Considering that there are other variables that play a role in the accuracy of this test, 100% infallibility cannot be achieved. There are many other conditions that can impact an accurate diagnosis, including false positives.
As you can see, there are plenty of uses for the cardiac stress test. Your cardiologist is the person who is the best professional to diagnose any particular circumstance. It is also very essential that you know that all tests are limited in some form or another and the cardiac stress test is not an exception. A lot depends on getting the right conditions such as the best heart rate. Stress tests with images depend on how good the images are. There are some particular items that can have an impact on the image quality.
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