A stress test given to patients who are unable to walk on a treadmill, during which a medication (dobutamine) is administered to increase a patient’s heart rate, simulating exercise. During the test, a microphone-like device attached to the patient’s chest sends out ultrasound waves that bounce off the heart to produce images of the heart. The test helps diagnose certain heart conditions, such as valve problems and coronary artery disease. Download the Dobutamine Stress Echocardiogram PDF for more information.