Types of Stress Testing

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Types of Stress Testing
Sestamibi Stress Test or Other Imaging Stress Test
Involving Radioactive Dye
The technician will inject a small amount of the dye (such as sestamibi) into your bloodstream via a needle placed in a vein of your arm or hand. You’re usually given the dye about a half-hour before you start exercising or are given a medicine that makes your heart work hard. The amount of radiation in the dye is safe and not a danger to you or those around you. However, if you’re pregnant, you shouldn’t have this test because of risks it might pose to your unborn child. You will lie down on a table and a special camera or scanner that can see the dye in your bloodstream will take pictures of your heart.
Exercise Stress Echocardiogram Test
The technician will take pictures of your heart using echocardiography before you exercise and after you finish. A sonographer (a person who specializes in using ultrasound techniques) will apply a gel to your chest and then will briefly put a wand-like device (called a transducer) against your chest and move it around. The transducer sends and receives high-pitched sounds that you usually can’t hear. The echoes from the sound waves are converted into moving pictures of your heart on a screen.
Magnetic Resonance Imaging Stress Test
MRI stress test may use a medicine rather than exercise to get your heart to work harder. But some facilities have you exercise on a specially made bicycle or treadmill that allows you to exercise while lying on your back. For this test, you will be put inside a tunnel-like MRI machine that takes pictures of your heart when it’s working hard and when your body is at rest.
Types of Stress
Source: National Heart Lung and Blood Institute, National Institutes of Health. nhlbi.nih.gov

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