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Pharmacologic (Dobutamine) Stress Echocardiogram

A pharmacologic stress echocardiogram (echo) is a non-exercise test used to detect coronary artery disease (CAD), a blockage of blood flow to the heart. The test provides a complete picture of the workings of the heart during periods of rest and exercise.

During the exam, a medicine is given to increase the rate and force of your heartbeat similar to exercise. Then the echo uses high-frequency sound waves (ultrasounds) to look at how the various parts of the heart work. If CAD is present, the stress echo will often note changes in the heart muscle contractions.

Although Dobutamine is the most common drug for this test, other drugs may be used instead. Thus, you may hear this test called a pharmacologic stress echocardiogram when the specific drug is not designated.

Before the Test

  • Do not eat or drink for five hours before your test. Take your usual medicines with small sips of water unless otherwise instructed by your doctor.
  • On the morning of the exam, do not use lotion or powder on your body.
  • Wear or bring comfortable clothing for lying on an exam table.
  • Allow one to two hours from arrival until the exam is complete.

Day of the Test

Arriving at the Hospital
Check in at the Echo and Blood Flow Department (Galter Pavilion, 201 East Huron, Suite 8-202). Parking is available.

Preparing for the Test

  • After the test is explained, including its benefits and risks, you will be asked to sign a consent form.
  • You will be asked to undress from the waist up. Women are given a hospital gown to wear.

During the Test

  • During the test, you will lie down on a special echo exam bed.
  • Electrodes will be placed on your chest to record an electrocardiogram (ECG) during the test. An IV (into the vein) line will be placed into your arm.
  • A small transducer (probe) coated with a light gel will be placed on your chest to obtain the ultrasound images of your heart.
  • During the echo, the Dobutamine will be injected into the IV. The medicine will be slowly increased every three minutes until the desired heart rate is reached. The medicine may cause a pounding sensation in your chest; this is normal. You may also have the urge to urinate. Palpitations, a feeling of warmth or flushing, nausea, headache or abdominal discomfort are rarely noted.
  • During the exam, a cardiologist will be present and your blood pressure will be checked every two to three minutes.

After the Test
As you rest for the next 20 to 30 minutes, the nurse will check your heart rate and blood pressure. You may resume your regular diet.

Contact
Echocardiography
(312) 926-7483


Review Date: 07/02