As a cardiac electrophysiologist, I specialize in the study of the electrical activity of the heart. Ventricular repolarization is a critical phase of the cardiac cycle that occurs after the ventricles have been depolarized and are ready to relax. Ventricular repolarization refers to the process by which the ventricles of the heart return to their resting state after a contraction. This process is essential for the heart's ability to contract and relax in a coordinated and efficient manner. During depolarization, the heart muscle cells, or cardiomyocytes, become excited and contract, allowing the heart to pump blood. Following this contraction, the cells must return to their resting state so that they can be stimulated again. This return to the resting state is known as repolarization. The T wave on an electrocardiogram (ECG) is a visual representation of ventricular repolarization. It follows the QRS complex, which represents ventricular depolarization. The T wave's appearance can provide important information about the heart's electrical activity and overall health. In summary, ventricular repolarization is the electrical recovery phase of the heart's ventricles after they have contracted, and the T wave on an ECG is an indicator of this process. 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 >>