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Created page with "== Introduction == Electrocardiography is a commonly used, non-invasive procedure for recording electrical changes in the heart. The term is derived from the Greek words 'electro' referring to its relation to electrical activity, 'cardio' meaning heart, and 'graph' meaning to write. Any disturbance in the normal electrical activity of the heart manifests as changes in the ECG. == History == The history of electrocardiography can be traced back to t..."
