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Please follow these instructions so we do not need to reschedule your test. Do not stop taking any medication without first talking to your doctor.
48 hours before your test
24 hours before your test
Do not drink or eat products that contain caffeine (coffee and tea, including decaf; cola; energy drinks; Mountain Dew®) and those labeled decaffeinated or caffeine-free (these still contain small amounts of caffeine).
Do not take medications that contain caffeine (Excedrin®, Anacin®, diet pills, NoDoz, etc.). If you aren't sure if a medication contains caffeine, read the label or ask your pharmacist or doctor.
Stop taking these medications: Isosorbide dinitrate (Dilatrate®, Isordil®, etc.), isosorbide mononitrate (Imdur®, Ismo®, etc.), nitroglycerin (Nitrostat®, Nitro-Dur®, Deponit®, Minitran, nitro patch, etc.).
Day of your test
During this test, you will get medication (dobutamine) to mimic the way your heart works when you exercise. We will closely watch you during the test to see how you react to the medication. This test is used if you are not able to exercise on a treadmill or stationary bike, but your doctor needs more information about:
Please see the test preparation information on the first page of this handout for information about medications to stop taking before your test. Your doctor may want you to make other changes to your medications. Do not stop taking any medication without first talking to your doctor.
If you take insulin to control your blood sugar, ask your doctor how much medication you should take the day of the test. You may need to take half of your usual morning dose and eat a light meal 4 hours before the test. If you take pills to control your blood sugar, do not take your medication until after the test.
Do not take your diabetes medication and skip a meal before the test.
If you own a glucose monitor, bring it with you to check your blood sugar levels before and after your test. If you think your blood sugar is low, let us know right away. Plan to eat and take your diabetes medication after your test.
Please wear comfortable clothes. DO NOT bring valuables.
The appointment takes about 60 minutes. The actual infusion time is about 15 minutes. Plan to stay in the waiting room for at least 30 minutes after your test.
Your doctor will get your test results and review them with you.