The T wave on an ECG corresponds to which cardiac event?

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Multiple Choice

The T wave on an ECG corresponds to which cardiac event?

Explanation:
The T wave represents ventricular repolarization—the ventricles returning to their resting electrical state after the beat. In an ECG, the P wave shows atrial depolarization, and the QRS complex shows ventricular depolarization. Atrial repolarization occurs during the QRS complex but is not seen as a separate deflection. After the ventricles have depolarized, they repolarize, producing the T wave as they reset in preparation for the next heartbeat.

The T wave represents ventricular repolarization—the ventricles returning to their resting electrical state after the beat. In an ECG, the P wave shows atrial depolarization, and the QRS complex shows ventricular depolarization. Atrial repolarization occurs during the QRS complex but is not seen as a separate deflection. After the ventricles have depolarized, they repolarize, producing the T wave as they reset in preparation for the next heartbeat.

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