T-Wave on an ECG corresponds to which cardiac event?

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Multiple Choice

T-Wave on an ECG corresponds to which cardiac event?

The T wave represents ventricular repolarization—when the ventricles reset their electrical state after contracting so they can be ready for the next beat. On an ECG, the P wave shows atrial depolarization, the QRS complex shows ventricular depolarization, and the T wave follows the QRS as the ventricles return to rest. The atria do repolarize too, but that signal is hidden within the QRS and doesn’t appear as a separate wave. Changes in the T wave’s shape or height can also signal issues like ischemia or electrolyte imbalances in some leads.

The T wave represents ventricular repolarization—when the ventricles reset their electrical state after contracting so they can be ready for the next beat. On an ECG, the P wave shows atrial depolarization, the QRS complex shows ventricular depolarization, and the T wave follows the QRS as the ventricles return to rest. The atria do repolarize too, but that signal is hidden within the QRS and doesn’t appear as a separate wave. Changes in the T wave’s shape or height can also signal issues like ischemia or electrolyte imbalances in some leads.

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