An electrocardiogram (EKG, ECG) is a test that measures the electrical signals that
control heart rhythm. The test measures how electrical impulses move through the heart
muscle as it contracts and relaxes.
During an electrocardiogram, small pads (electrodes) are attached to the skin on the
chest, arms, and legs. The electrodes are also connected to a machine that translates
the electrical activity into line tracings on paper. These tracings are often analyzed
by the machine and then carefully reviewed by a doctor for abnormalities.
Medical Review:Adam Husney, MD - Family Medicine & Rakesh K. Pai, MD - Cardiology, Electrophysiology & Martin J. Gabica, MD - Family Medicine & George J. Philippides, MD, FACC - Cardiology
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