How Is A Cardiac Cycle Represented On An Ecg Tracing?

How Is A Cardiac Cycle Represented On An Ecg Tracing? A typical ECG tracing of the cardiac cycle (heartbeat) consists of a P wave (atrial depolarization ), a QRS complex (ventricular depolarization), and a T wave (ventricular repolarization). An additional wave, the U wave ( Purkinje repolarization), is often visible, but not always. What do