In which segment does early repolarization of R/L ventricles occur?

Early repolarization of the right and left ventricles occurs during the ST segment of the ECG. This segment represents the phase of the cardiac cycle where the ventricles are in the process of repolarizing after the initial depolarization represented by the QRS complex.

During the ST segment, the myocardium is still undergoing electrical changes as it transitions from a depolarized state back to resting potential. Early repolarization can manifest as changes in this segment, often leading to an elevation of the ST segment in certain conditions, which is important in clinical assessments.

The QRS complex represents ventricular depolarization, while the P-R interval reflects the time taken for electrical conduction from the atria to the ventricles. The T wave follows repolarization and reflects the final phase of the ventricular repolarization process. Understanding the timing of these electrical events on the ECG is crucial for accurate interpretation and diagnosis of cardiac conditions.