A heart stress test is a diagnostic test that shows how well your heart works when it is under physical stress, usually from exercise or medicine that makes the heart work harder. It helps providers evaluate blood flow to the heart, check for abnormal heart rhythms, and look for signs of blocked or narrowed arteries. The test is often used when someone has symptoms like chest pain, shortness of breath, or dizziness.
Schedule a heart stress test if you have chest pain, shortness of breath, or heart risk factors. This simple test shows how your heart works when it’s under stress and helps guide the next step in your care.
You may be asked to have a stress test if you:
You don’t need to know what’s wrong—just that something doesn’t feel right.
A stress test helps your care team understand:
A stress test may also help identify or evaluate:
These answers can help rule out serious problems or catch them early—when treatment works best.
You walk on a treadmill while your heart rate, rhythm, and blood pressure are monitored. The speed increases slowly so your care team can see how your heart responds.
A nuclear stress test uses a small amount of imaging material to take pictures of blood flow to the heart—both at rest and during stress. This test gives a more detailed view and may be recommended if clearer images are needed.
Your provider will help choose the test that fits your symptoms and health needs.
An exercise stress echocardiogram combines a traditional stress test with ultrasound images of your heart. Images are taken before and after exercise to show how your heart pumps and whether all areas of the heart muscle are getting enough blood flow during activity. This type of test can help identify signs of blocked arteries, reduced heart function, or other concerns that may not appear while the body is at rest.
A cardiac rehabilitation stress test is often used to evaluate heart function before or during a supervised rehab program. It helps your care team understand how much activity your heart can safely handle and can guide a personalized exercise plan for recovery. This type of stress test is commonly used after a heart attack, heart surgery, or another cardiac event to support safe progress and monitor improvement over time.
Preparing for your stress test can help the appointment go more smoothly and ensure the most accurate results. Your care team will give you specific instructions based on the type of test you're having, but a few general steps are often recommended.
Knowing what to expect can help you feel more prepared and at ease before your appointment. While the exact steps may vary depending on the type of stress test, most tests follow a similar process and are completed the same day.
After the Test
Comfort, safety, and clear communication come first.
After your stress test, your provider will review how your heart responded during activity and recovery. Results can help show whether blood flow to your heart appears normal, whether symptoms may be heart-related, and if any follow-up testing treatment is needed.
Normal stress test results mean your heart appears to be getting enough blood flow during exercise or medication-induced stress. Your heart rate, rhythm, blood pressure, and recovery pattern likely responded the way your care team would expect. In many cases, this can help rule out serious problems, though your provider may still recommend follow-up based on your symptoms, risk factors, or medical history.
Abnormal stress test results may suggest that part of the heart is not getting enough blood flow during activity or that the heart is not responding normally to stress. This can point to concerns such as blocked or narrowed arteries, abnormal heart rhythms, or other heart-related issues. An abnormal result does not always mean there is a major problem, but it usually means your provider may recommend additional testing, closer monitoring, or a treatment plan based on your needs.
A cardiac stress test is generally safe when performed under medical supervision, and serious complications are rare.
During or shortly after the test, some people may have mild, temporary side effects such as shortness of breath, fatigue, dizziness, flushing, a fast or irregular heartbeat, or a drop in blood pressure especially if medication is used to make the heart work harder. In uncommon cases, more serious complications can occur, including significant arrhythmias, chest pain, an allergic reactions to a medication or tracer, or, very rarely, a heart attack.
Your care team monitors your heart rhythm, blood pressure, and symptoms throughout the test so they can respond quickly if any concerns arise.
If you’re worried about your heart—or want clear answers—help is available. Schedule a heart stress test today or talk with a provider about what’s right for you. Care is close, personal, and focused on helping you move forward with confidence.
