A doctor or technician will watch your heart rate, blood pressure, and ECG. Types of exercise stress tests can include:Įxercise ECG: In this stress test you exercise on a treadmill or exercise bicycle. 1) Exercise stress testingĮxercise stress testing is the best kind of stress test since it’s the most natural way to work your heart. Let’s review the two main types of stress tests and the ways in which they are monitored. The best stress test for you will depend on your own health and what is available in your area. There are also several different ways to monitor the heart during the stress test, such as with an ECG, echocardiogram, nuclear imaging, or MRI. There are two main ways to stress the heart during a stress test:ġ) Exercise: such as walking on a treadmill or pedaling an exercise bicycle (most common)Ģ) Medication: increases the blood flow to your heart, and makes the heart work harder - similar to when you exercise Help your doctor prescribe a safe exercise program for you Help diagnose heart conditions like coronary artery disease and heart rhythm problemsĬheck if treatment for certain heart problems is workingĬheck the heart before surgery to make sure it is strong enough to undergo anesthesia This will give your doctor an idea of how your heart works during both exercise and rest.Īfter the test is over, you may eat, drink, and go back to your normal activities right away.You might need to have a heart stress test to: You will be asked to lie down on the examination table, and the gamma-ray camera will take pictures of your heart while you are resting. When you return, doctors will give you another injection of the radioactive substance. Doctors will ask you not to exercise or drink or eat anything with caffeine, such as coffee, tea, sodas, or chocolate. The camera can pick up traces of the radioactive substance in your body and then send a picture to a television monitor.Īfter this part of the test is over, you can leave the testing area for 3 or 4 hours. The camera is used to take pictures of your heart. You will be given an injection of a radioactive substance, and you will be asked to lie on an examination table, which has a gamma-ray camera above it. Doctors will then have you walk on a treadmill.Īfter your doctors have the information they need from the exercise part of the test, you will step off of the treadmill and go into another room. The electrodes are attached to wires called leads, which are attached to an electrocardiogram machine. Just like the exercise stress test, you will have small metal disks called electrodes placed on your chest and back. If doctors cannot see the radioactive substance in one part of your heart, it probably means that section of heart muscle has died, either because of a previous heart attack or because the coronary arteries supplying blood to that area of the heart are blocked. If the test results are not normal during both parts of the test (rest and exercise), part of your heart is permanently deprived of blood or is scarred. The heart normally pumps more blood during times of physical exertion. If the test shows that blood flow is normal while you are resting but not normal while you are exercising, then doctors know that your blood flow to your heart is not adequate during times of stress. The results of the nuclear stress test can show doctors if the heart is not working properly while you are resting, exercising, or both. This radioactive substance (such as thallium or sestamibi) is not harmful to your body or your organs. This test is almost the same as the exercise stress test, except doctors will give you a small amount of a radioactive substance just before the end of the exercise part of the test. Nuclear stress tests can also give doctors information about your arteries and whether they might be narrowed or blocked because of coronary artery disease. The test can show the size of the heart’s chambers, how well the heart is pumping blood, and whether the heart has any damaged or dead muscle. A nuclear stress test lets doctors see pictures of your heart while you are resting and after you have exercised.
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