Echo uses a small device (probe or transducer) that makes sound waves. It sends images of your heart to a video screen. The images are recorded:
- A special gel is put on your chest. The probe is moved over the gel. This records your heart at rest. If you're overweight, the technician may have to press down harder to get better images. This can be uncomfortable. Tell your technician if you're uncomfortable.
- Medical staff will take your blood pressure. You'll also have an electrocardiogram (ECG). For this test, small pads (electrodes) are placed on your chest. The ECG reads the pattern of your heartbeat.
- Next, you're asked to walk or run on a treadmill. Or you may use a stationary bike. You'll do this until your heart beats fast. Note: If you can't exercise, you'll be given a medicine to get your heart working harder. This medicine can make you feel short of breath.
- You stop exercising. Right away, the probe is used to take a second set of video images of your heart. Your doctor compares these images with the first ones taken.
- The technician may use I.V. contrast for better images.
During the test, tell the doctor if you feel any chest, arm, or jaw discomfort. Also tell them if you have severe shortness of breath, feel very tired, or feel dizzy. The test may be stopped if you have severe or lasting symptoms with exercise. It may be stopped if there are any changes in your vital signs or heart rhythm.