Dobutamine Echo & Echo/Doppler

A Dobutamine Stress Echocardiogram (often called a Dobutamine echo) is a specialised heart test that uses an echocardiogram (heart ultrasound) together with a medication called Dobutamine to assess how your heart functions under stress. At WA Cardiology, this test is commonly used when a patient is unable to exercise adequately on a bike or treadmill.

Your doctor may request this test to:

• Investigate chest pain or shortness of breath
• Assess for coronary artery disease
• Evaluate heart muscle blood supply
• Assess heart function when exercise testing is not possible
• Investigate abnormal ECG or imaging results
• Guide management of known heart disease
• Assess suitability for surgery or medical procedures

Dobutamine is a medication given through a vein that increases heart rate and makes the heart beat more strongly. This simulates the effects of exercise on the heart while you remain lying on the examination bed.

This test can show:

• How well the heart muscle contracts under stress
• Areas of the heart that may not be receiving enough blood flow
• Changes in heart function that are not present at rest
• Heart valve performance under stress

Images taken at rest and when your heart reaches your target heart rate are compared to identify abnormalities.

Yes. A Dobutamine Stress Echocardiogram is safe. The test is supervised by experienced clinical staff. Your heart rhythm, blood pressure and symptoms are monitored continuously. The medication can be stopped immediately if needed and emergency equipment and trained staff are always present. Your safety is the highest priority throughout the test.

Please:

• Do not eat for 2–3 hours before the test
• Be well hydrated in the 24 hours before your test to make cannulation easier
• Take your medications as directed by your referring Doctor (some medications, particularly beta blockers, may need to be withheld – you will be advised by your referring GP if this applies)
• Please bring an up to date list of your medications
• Wear comfortable clothing

• A resting Echocardiogram is performed first
• ECG electrodes and a blood pressure cuff are applied
• An intravenous line (IV) is inserted into your arm
• Dobutamine is given in gradually increasing doses
• Ultrasound images of your heart are taken when you reach your target heart rate
• Your heart rhythm, blood pressure, and symptoms are monitored throughout

Please allow 40 minutes in total for preparation, medication administration, imaging and recovery.

Common sensations may include:

• A faster heartbeat
• A warm or flushed feeling
• Mild shortness of breath
• Mild chest tightness

These effects are usually short-lived and resolve quickly once the medication is stopped.

No. The test itself is not painful. You may feel brief discomfort, similar to a blood test.

Yes. The test can be stopped at any time if you feel chest pain, become short of breath, feel dizzy, nauseated, or unwell or if you request to stop.

• You will be monitored briefly during recovery
• The IV and electrodes are removed
• You can usually return to normal activities the same day unless advised otherwise

Dobutamine is a fast metabolising drug. Once you are feeling back to normal, you will be safe to drive.

A Cardiologist reviews the Dobutamine Stress Echocardiogram.

A detailed report is sent to your referring doctor, who will discuss the results with you.

Please allow up to 5 business days for your results to be with your referring Doctor.

Significant or urgent findings are communicated promptly.

In most cases, Medicare provides a rebate when:

• You have a valid referral from a GP or specialist
• The test meets Medicare eligibility criteria

Any out-of-pocket costs will be explained before your appointment.

• Inform clinic staff if you feel unwell before leaving
• Seek urgent medical attention if symptoms develop later
• In an emergency, call 000

If you need to change your appointment, please contact WA Cardiology as early as possible so the appointment can be offered to another patient.

If you have questions before or after your Dobutamine Stress Echocardiogram, please contact WA Cardiology – our clinical and administrative team are happy to help.