Electrocardiogram

Electrocardiogram (ECG) is the most commonly used biomedical signal in clinical diagnostics of the heart. The word “electrocardiogram” is a combination of three words: electro, pertaining to electric signal; cardio, which translates into heart; and gram, whichstands for recording. The recording of the electric activity of the heart is called ECG. A cardiac muscle contractionisadirect resultof thecllularelctic excitationdescribed by the ECG. The depolarization initiates the shortening of each individual muscle cell. The electric activation of each cell is an indication of the functioning of that cell. Therefore, the ECG is the result of depolarization of the heart muscle in a controlled repetitive fashion. By tracking the process of electric depolarization of the cardiac muscle cells, an impression of the heart’s functionality can be formed and used to recognize 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 electric depolarization signal is analyzed and classified as a certain cardiac disorder.

Keywords:

electrocardiogram , biomedical signal , image processing , Artificial intelligence