Which ECG waveform represents ventricular repolarization?

Which ECG waveform represents ventricular repolarization?

• A. P-wave
• B. QRS complex
• C. T-wave
• D. NSR

Answer: (C)

Ventricular repolarization is the ventricles resetting after contraction, and on the ECG this recovery phase is shown by the T-wave. The P-wave reflects atrial depolarization, the QRS complex reflects ventricular depolarization, and NSR refers to a normal rhythm, not a specific waveform. So the rounded, after-the-QRS deflection—the T-wave—represents ventricular repolarization.

Ventricular repolarization is the ventricles resetting after contraction, and on the ECG this recovery phase is shown by the T-wave. The P-wave reflects atrial depolarization, the QRS complex reflects ventricular depolarization, and NSR refers to a normal rhythm, not a specific waveform. So the rounded, after-the-QRS deflection—the T-wave—represents ventricular repolarization.