Atrial Fibrillation tests
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An electrocardiogram is a painless test that measures your heart's electrical activity. Your doctor may order this test if they think you have a heart problem.
A Holter monitor is a device that your doctor may ask you to wear for a short amount of time to track any possible abnormalities in your heart rhythm.
An echocardiogram test uses sound waves to produce live images of your heart. Your doctor uses this test to monitor how your heart is functioning.