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Electrocardiogram (EKG)An electrocardiogram (ECG or EKG) is a noninvasive test used to measure electrical activity in the heart. Electrical sensors called leads are attached to predetermined positions on the arms, legs, and chest to record electrical activity and help assess heart function.
The ECG creates a graph that represents the normal phases of activation of the heart. When patients' hearts beat normally in sinus rhythm, separate little bumps and lines indicate when the atria contract and when the ventricle...Read the full article
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