Chemical Stress Test

Instructions for the Test

IT IS IMPORTANT FOR YOU TO FOLLOW THESE INSTRUCTIONS:

  1. NO CAFFEINE 24 HOURS prior to the test. This includes coffee, tea, decaffeinated coffee/tea, colas, chocolate, Anacin or Excedrin
  2. NO FOOD 4 HOURS prior to the test. You may have some water or juice. If you are diabetic, you may eat a small amount of food and use your insulin as usual
  3. Take your medications as usual unless your physician instructs you otherwise. If you have an inhaler, please bring it with you
  4. Wear comfortable clothing

What is a Chemical Stress Test? (Adenosine, Persantine or Lexiscan Thallium Test)

It is a test to show how well your heart functions and if your heart is receiving adequate blood supply. You will be receiving a radioactive material called Myoview in order to take pictures of your heart. You will also be receiving Adenosine, Persantine or Lexiscan. These are medications that simulate exercise. None of these medications are dyes. This test is for patients who are unable to exercise on a treadmill.

How is the Test Done?

The test is done at our office. This test may be scheduled as a one day or two day test.

One Day Test:

The test will take about two (2) hours. An intravenous line (IV) will be set. You will be receiving Myoview. Two sets of pictures of your heart will be taken. During the picture taking, your left arm will be raised above your head. You will be receiving Adenosine, Persantine or Lexiscan to simulate exercise. Some common feelings during the simulated stress test include flushed feeling, shortness of breath, chest pain or nausea. A physician will be present during the simulated stress. After the test, you will be able to continue your normal activities. Please be sure to follow instructions for the test.

Two Day Test:

Rest portion of the test involves an injection of Myoview and images made of your heart. Plan on being at our office about one hour. No preparations are necessary for this day (i.e., you may have coffee, eat, and take medications as usual).

The simulated stress portion of the test involves setting an IV. It is important that you:

  1. Have NO CAFFEINE 24 HOURS prior to the test. This includes coffee, tea, decaffeinated coffee/tea, colas, chocolate, Anacin or Excedrin
  2. Have NO FOOD 4 HOURS prior to the test. You may have some water or juice. If you are diabetic, you may eat a small amount of food and use your insulin as usual
  3. Take your medications as usual unless your physician instructs you otherwise. If you have an inhaler, please bring it with you

This enables the physician to give the Adenosine, Persantine or Lexiscan to simulate exercise. Some common feelings during this part of the test may include feeling flushed, shortness of breath, chest pain, or nausea, You will also be receiving Myoview so images can be taken of your heart after the simulated exercise. Plan on being at our office 1 ½ hours. Please be sure to follow the instructions for the test.

Is the Test Safe?

Myoview, Adenosine, Persantine and Lexiscan are all safe with small chance of adverse reactions. A physician will be present to monitor the stress portion of the test. Experienced personnel are available to handle any emergencies.

Test Results

The physician will review the images and give you the results at a later appointment or will send a report to your physician.

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