An electrocardiogram (EKG or ECG) records the electrical activity of your heart. An EKG provides information about your heart's rate and rhythm. It also diagnoses ischemia (lack of oxygen to the heart muscle), heart attacks, and a variety of other heart conditions.
To perform an EKG, your healthcare provider places sensing electrodes on the skin of your chest, arms, and legs. The electrodes are small adhesive patches with wires that connect to a monitor. The monitor captures and displays your heart's electrical activity and can record it on graph paper. These recordings are often called tracings.
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