An Exercise Stress Echo is a diagnostic test that combines an echocardiogram (ultrasound of the heart) with exercise. It is used to assess how your heart performs under physical stress, typically while walking on a treadmill or pedaling a stationary bike. The test helps detect heart conditions like coronary artery disease, heart valve problems, and abnormal heart rhythms that may not be apparent when the heart is at rest. During the test, your heart is monitored with ultrasound images while you exercise, and the images are compared before and after physical activity to evaluate heart function and detect any abnormalities.