Dobutamine Cardiolite Stress Test

A dobutamine stress test is a test that allows a patient who cannot walk on a treadmill or ride a bicycle to complete a stress test. The tracer (cardiolite) is utilized. Images are obtained before the dobutamine is infused and after the dobutamine is infused. This helps to determine if areas of the heart are receiving enough blood or if there are blockages (coronary artery disease).

The patient will receive an IV to allow the injection of the tracer and the infusion of the dobutamine. There will be a wait of approximately an hour to an hour and a half before the first images are taken. Patients will then have electrodes (patches) placed on the chest. Several EKGs will be obtained. The patient will receive the medication dobutamine through the IV for 12 minutes, replacing the exercise portion of the test.

The medication dobutamine will cause the heart rate to increase as if the patient was exercising. The patient may feel his or her heart rate increase. Cardiolite (tracer) will be injected again at the end of the dobutamine infusion. Images will be obtained an hour and a half after the cardiolite injection.

The patient should not have anything to eat or drink after midnight before the test. The attending physician should determine if the patient should take his or her medications before the test. This test will take 4–6 hours. A physician will read the test.

 

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