An electrocardiogram (ECG) is a test that records the electrical activity of the heart.
See also:
ECG; EKG
You will be asked to lie down. The health care provider will clean several areas on your arms, legs, and chest, and then attach small patches called electrodes to the areas. It may be necessary to shave or clip some hair so the patches stick to the skin. The number of patches used may vary.
The patches are...
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Source: ADAM Encyclopedia
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