Stress tests can help a doctor diagnose various heart conditions. Some factors the doctor will aim to measure include: The length of time spent exercising will depend on how often a person exercises and their medical history. A person lies flat on a table for these images. The technician will take some images of the heart before exercising and after. The doctor will give the person an injection of the tracer liquid.
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Nuclear stress testĪ person should avoid applying oil, lotion, or cream to their skin on the day of the nuclear stress test. This may cause shortness of breath or a headache. If the person is not exercising, they will receive an infusion of a certain medication into their arm through an IV line.
sticky patches, or electrodes, on the chestĪ nurse may need to shave a person’s chest to allow the electrode patches to stick. The test involves the doctor hooking the person up to various medical devices that monitor the heart. Exercise stress testĪ person should wear comfortable clothes and walking shoes. These substances could affect the results.Īnyone who usually has an inhaler should bring it to the test and ensure that the doctor knows about it. In this way, the doctor can compare how the heart looks and functions normally and while under stress.Ī doctor may advise the person not to consume caffeinated drinks or take certain medications on the day of the test. They may also take “at rest” images before the person exercises. They will take the first just after the person has exercised and the second when their body is at rest, either later that day or the next day. The doctor will take two sets of images, each covering 15–30 minutes. The person will then undergo an imaging test that involves a small amount of radiation, such as a single-photon emission computer tomography or cardiac PET test. This can suggest a blockage.Īs with the exercise test, if a person cannot exercise, the doctor may use medication instead. The dye will also show any areas of the heart where blood is not flowing. The process is similar to that of the exercise stress test, but the doctor will inject a tracer dye into the arm to highlight the heart and blood flow on an image. Nuclear stress testĭepending on the results, the doctor may recommend a nuclear stress test as a next step.Īlso known as a nuclear heart test or radionuclide scan, this can give a more detailed and accurate assessment of the heart. It may cause effects similar to those that occur during exercise, such as flushing or shortness of breath. The medication will take 15–20 minutes to deliver. In this case, they will attach electrodes to the person’s chest and deliver the medication into their arm through an IV line. If a person cannot exercise, the doctor may use a certain medication to trigger the same process. Qualified medical professionals are always on hand in case of any adverse effects. They may also stop the test if the electrocardiogram (EKG) device detects any unusual changes. If the person experiences any of the following, the doctor might stop the test: Share on Pinterest During an exercise stress test, a doctor will monitor heart rate and blood pressure with sticky electrode patches. The person will exercise for 10–15 minutes but can ask to stop at any time if they feel unwell. The treadmill will stop, and the person will lie down while the doctor takes their blood pressure and other readings. Toward the end, the person may breathe into a mouthpiece to measure the air they breathe out. The treadmill may go into an uphill, or incline, position. 
The treadmill speed will gradually increase. As the treadmill starts to move, the person will walk slowly. Next, the person will stand on the treadmill. Having attached sticky electrodes to the person’s chest to monitor the heart, the doctor will take some readings. Here is a step-by-step description of what happens during a stress test using a treadmill: Exercise stress testĭuring a stress test, the doctor will aim to determine the person’s heart rate, blood pressure, breathing, and how tired they feel during different levels of physical activity. There are a few different ways of completing a stress test, depending on the person’s needs.
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