Electrocardiogram (EKG or ECG) is a non-invasive cardiac test that checks for problems with the electrical activity of your heart.

ECG is used to measure the heart’s electrical conduction system. It picks up electrical impulses generated by the depolarization and re-polarization of cardiac tissue and translates into a waveform.

Moreover, it helps detect abnormal blood supply (Ischaemia), abnormal impulse generation and propagation.