As a domain expert in cardiology, I can provide you with a detailed explanation of ventricular repolarization. Ventricular repolarization refers to the process by which the ventricles of the heart return to their resting state after a contraction. This process is a critical part of the cardiac cycle, which is the sequence of events that form one complete heartbeat. Ventricular repolarization is essential for the proper timing of the heartbeat and for the heart's ability to pump blood effectively. During a heartbeat, the electrical impulses generated by the heart's conduction system cause the ventricles to contract, pushing blood out into the circulatory system. After this contraction, the ventricles must repolarize to prepare for the next heartbeat. This repolarization is characterized by a return of the electrical charge across the heart muscle cells, which is typically represented by the T wave on an electrocardiogram (ECG). The process of repolarization involves the movement of ions, particularly potassium and calcium, across the cell membranes of the ventricular myocardial cells. The shift in these ions helps to reset the electrical potential within the cells, allowing them to be ready for the next contraction. read more >>

After the QRS complex, we see another small peak, and this is called the T wave. The T wave represents the repolarization of the ventricles. We know that repolarization is the opposite of depolarization and refers to the change of the membrane potential that returns the membrane back to a negative value.read more >>