The EKG recording of ventricular depolarization is called what?

The correct term for the EKG recording of ventricular depolarization is the QRS complex. This wave represents the rapid depolarization of the ventricles, which is the electrical impulse that triggers ventricular contraction. During this phase, the electrical signal moves through the ventricles, leading to their contraction and the subsequent pumping of blood to the lungs and the rest of the body.

The QRS complex follows the P wave, which represents atrial depolarization, and precedes the T wave, which signifies ventricular repolarization. The PR interval measures the time from the start of atrial depolarization to the start of ventricular depolarization, and is not itself a depiction of any depolarization. Therefore, the QRS complex is critical for understanding the heart's electrical activity and rhythm and is central to diagnosing various cardiac conditions.