Adenosine Stress Cardiolite Scan

A Cardiolite scan is a test that uses a tracer to produce images of the heart muscle. When combined with an exercise test, the scan helps determine if areas of the heart are not receiving blood. For patients who are unable to exercise adequately, the Adenosine Stress Cardiolite scan may be done after the injection of adenosine, a drug that produces an effect on the heart similar to exercise. Cardiolite is injected while you are at rest and a set of pictures is taken. After you receive Adenosine, an additional dose of Cardiolite is injected and another set of pictures is taken. This allows doctors to compare how much blood flows through the heart muscle during stress and at rest. The test is especially useful in diagnosing coronary heart disease.

Preparing for the Test:

• Do not eat for 2 hours prior to the test. This will help prevent the possibility of nausea during the test.
• Be sure to mention to the doctor or nurse if you have a history of asthma, emphysema, or chronic lung disease. In such a case, the test could cause severe breathing problems.
• Do not take any medications that contain theophylline for 48 hours before the test. Bring a list of your current medications and doses.
• Do not drink caffeinated beverages for 2 hours before the test. Avoid medications that contain caffeine such as Excedrin®.
• Before the test, you’ll be given a brief explanation of the test and you’ll be asked to sign a consent form. Feel free to ask any questions about the procedure.