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Electrocardiogram

Meaning

An Electrocardiogram, abbreviated as ECG or EKG, is a fundamental, non-invasive clinical test that meticulously records the electrical activity generated by the heart over a defined period using external electrodes placed on the skin’s surface. This graphical output captures the sequential depolarization and repolarization of the cardiac muscle, which directly corresponds to the coordinated contractions of the atria and ventricles. It serves as an essential diagnostic tool utilized to accurately assess cardiac rhythm, detect underlying conduction system abnormalities, and identify clinical signs of myocardial stress, injury, or pathological enlargement, which are vital considerations in the management of hormonal therapy.