Electrocardiogram (ECG or EKG)



Electrocardiogram

By Mayo Clinic staff
Original Article:  http://www.mayoclinic.com/health/medical/IM04427
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Electrocardiogram

Illustration of an electrocardiogram being performed

An electrocardiogram monitors your heart rhythm for problems. Electrodes are taped to your chest to record your heart's electrical signals, which cause your heart to beat. The signals are shown as waves on an attached computer monitor or printer.
IM04427

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