A standard exercise stress test can reveal certain problems with the heart. When ultrasound (or echocardiographic) imaging is added to a stress test -- known as a "stress echo" -- it allows the doctor to visualize these problems with even more accuracy. Additionally, during a stress echo the size, thickness, squeezing function, and valves of the heart can be evaluated.
How Long Will the Test Take?
While very similar to a standard exercise stress test[/link], a stress test with ultrasound imaging takes longer due to the time needed for taking the images. So plan on spending one to two hours at the doctor's office during the test.
What Happens During the Ultrasound Imaging?
Ultrasound pictures of your heart will be taken before and after exercise. A clear gel will be applied to your chest. This material allows for the ultrasound probe to make better contact with your skin and makes for clearer pictures. This material is cleaned off before you go home and does not cause any discomfort or discoloration of your clothing.
While the technician is taking pictures you’ll be asked to lay briefly on your left side and your back. You may also be asked to take a deep breath or to hold your breath. This allows for technician to take pictures of your heart with your lungs out of the way.
For the stress images you will need to quickly stop exercising, lie down, and position yourself on the table. It is important that the pictures are taken as close to peak exercise as possible. Because of this there is no cool down period.
What Happens After the Test?
The stress and rest pictures are compared to each other by a cardiologist after they are selected and processed appropriately.
Your results will be given to you once a doctor has a chance to review them in detail.
Source:
ACC/AHA 2002 Guideline Update for Stress Testing