An ECGThe electrocardiogram (ECG) is a method for recording the electrical activity of the heart. By placing electrodes on the skin, the electrical signals generated during cardiac activity are derived and... lead is a method for recording the electrical activity of the heart. Electrodes are applied to the patient’s skin to capture the electrical signals of the heart. These signals are then transmitted to an ECG device, which amplifies and records them. A standard ECG lead consists of 12 leads placed at various locations on the body. The ECG provides valuable information about the heart’s rhythm, heart rate, the condition of the heart muscle, and can assist in diagnosing heart diseases.