ABSTRACT
A cardiac muscle contraction is a direct result of the cellular electrical excitation described by the ECG. The depolarization initiates the shortening of each muscle cell. The electrical activation of each cell is an indication of its functioning. Therefore, the ECG is the result of depolarization of the heart muscle in a controlled repetitive fashion. By tracking the process of electrical depolarization of the cardiac muscle cells, an impression of the heart’s functionality can be formed and used to locate regions in the heart structure that are not functioning to specifications and may require medical attention. Any deviation from the typical ECG observed in the recorded electrical depolarization signal is analyzed and classified as a cardiac disorder.
