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You are scheduled to have an adenosine (uh-DEN-us-seen) stress test. This information will help you know what to expect. Please arrive for your test at the time your doctor’s office tells you.
Stress tests can help find heart blockages. For an exercise stress test, a person walks on a treadmill. While the person walks, doctors keep track of the heart’s activity. An isotope (EYE-suh-tope) may be given before and after exercise. An isotope is a radioactive material that helps make images of your heart. The images taken before exercise are called “resting images.” The ones taken after exercise are called “stress images.” Doctors compare the images to find problem areas.
Some people cannot walk for very long, so they may have an adenosine stress test instead. Adenosine is a drug that affects the heart like exercise would. Pictures are taken before and after this drug is given.
Adenosine is the most widely used drug for this test. But it is not recommended for everyone. Some testing centers may use a different drug.
Your test will be done in 2 parts. The order may vary depending on where you have the test done.
During the test, a heart doctor (cardiologist), nuclear medicine technologist, and a nurse or EKG technician will be with you.
The adenosine will be given through your IV. This is called an “infusion” (in-FEW-zhun). You will also receive the isotope, so more images can be made. During the infusion, you may feel some symptoms. You may have chest pain, flushing, or stomach discomfort. These will go away when the medicine is stopped. Tell the nurse or technologist if you have any of these symptoms.
The order in which the tests are done does not affect the results. The way you prepare for the test is the same for all procedures.
If you weigh more than 250 pounds, your test may be done over 2 days instead of 1 day. You will be told when to come for both parts of the test. Eating is only restricted before the stress portion of the test.