ventricular depolarization

What Does The QRS Complex On An ECG Represent?

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What Does The QRS Complex On An ECG Represent? A combination of the Q wave, R wave and S wave, the “QRS complex” represents ventricular depolarization. This term can be confusing, as not all ECG leads contain all three of these waves; yet a “QRS complex” is said to be present regardless. What is the

How Is A Cardiac Cycle Represented On An Ecg Tracing?

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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