Stress echocardiography examines the function of the left heart chamber during physical exertion. The examination primarily serves to identify circulatory disturbances in the coronary arteries and has a greater degree of accuracy than the stress test. Stress echocardiography is also extremely helpful in assessing the development of a known narrowing of the coronary arteries as well as in evaluating the severity of valvular heart diseases. Prior to the examination, and following consultation with your doctor, the taking of beta blockers should be paused.