ECG/EKG (12-Lead EKG)

An ECG or EKG is an electrocardiogram, a procedure that measures the electrical activity of the heart. A "12-Lead" in this ECG/EKG definition is a technical term that describes views and readings of electrical activity from particular angles across the body. Patches called electrodes are affixed to the arms, chest or legs. The electrodes are connected to a machine that records the heart's electrical signals. This test can evaluate heart damage, heart rate, if heart medicines and pacemakers are working effectively and determine the position and size of heart chambers. It is conducted if an individual is having palpitations or chest pain. ECGs/EKGs are also given to individuals with a history of heart trouble or if they have a family with a history of heart conditions.

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