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An ECG can show the electrical activity of your heart. It will appear as a pattern on a graph. It can help to show abnormal movements or working of the heart.
Reasons for Test TOP
An ECG is used to:
Symptoms that may lead to your doctor ordering an ECG include:
An ECG may also be done if you:
Possible Complications TOP
There are no major problems linked to this test.
What to Expect TOP
Prior to Test
Description of Test
You will be asked to lie quietly on your back. Six small, sticky pads will be placed across your chest. Other pads will be placed on your arms and legs. Wires will be attached to the pads. The wires will also connect to the ECG machine. You will not feel anything during the test.
After Test TOP
You can return to your normal activity after the test.
How Long Will It Take? TOP
Will It Hurt? TOP
Your doctor will review the ECG. The results may lead to:
Call Your Doctor TOP
Call your doctor if you have heart-related symptoms. This includes chest pain or trouble breathing.
If you think you have an emergency, call for emergency medical services right away.
American Heart Association
Heart Rhythm Society
Canadian Cardiovascular Society
Heart and Stroke Foundation of Canada
Electrocardiogram (EKG or ECG). American Heart Association website. Available at:
Noninvasive tests and procedures. American Heart Association website. Available at:
What is an electrocardiogram? National Heart, Lung, and Blood Institute website. Available at:
Last reviewed March 2018 by
EBSCO Medical Review Board
Alan Drabkin, MD
2545 Park Plaza
Telephone: (615) 344-6060
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