Stress echocardiography or Stress ECHO is a test that shows how well your heart muscle is working to pump blood to your body. It is most often used to detect a decrease in blood flow to the heart from narrowing in the coronary arteries. Patient will walk on a treadmill and blood pressure and ECG is monitored throughout. Immediately after this ECHO images are taken while your heart rate is increasing. The images will show whether any parts of the heart muscle do not work as well when your heart rate increases. This is a sign that part of the heart may not be getting enough blood or oxygen because of narrowed or blocked arteries.