ECG  Stress Test A stress test is a non-invasive exercise test used for the diagnosis of coronary artery disease. It involves placing the heart under physically stressful conditions–i.e., making it work–in order to elicit findings of coronary insufficiency. Dobutamine Stress Test For patients who cannot undertake a stress test the Dobutamine stress echo test involves the injection of a medication called Dobutamine while you are closely monitored. The medication stimulates your heart in a similar way as exercise. 2 D Echocardiography with Colour Doppler An echocardiogram, often called “echo,” is a graphic outline of the heart’s movement. During this test, high-frequency sound waves (ultrasound) are sent into the body. Echoes received are used to produce an image of the heart’s chambers and valves. This allows the Doctor to evaluate chamber size, muscle function and valve structure and function. In conjunction with two-dimensional pictures, Doppler ultrasound and color Doppler are used to evaluate the blood flow through the heart and across the valves. Stress Echocardiography A stress echocardiogram (“stress echo”) is a non-invasive test that combines ultrasound pictures of the heart with an exercise test. It checks the coronary arteries for narrowing by evaluating muscle function at rest and after exercise. Pulmonary Function Test