Which waveform represents the QRS complex?

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Multiple Choice

Which waveform represents the QRS complex?

Explanation:
Ventricular depolarization is what the QRS complex represents. It’s the rapid, large deflection that occurs after the P wave (atrial depolarization) and before the T wave (ventricular repolarization), signaling the ventricles are activating to contract. The P wave corresponds to atrial depolarization, the T wave to ventricular repolarization, and the U wave (when present) is a smaller, separate deflection related to late repolarization. So the QRS complex is the ventricular depolarization waveform.

Ventricular depolarization is what the QRS complex represents. It’s the rapid, large deflection that occurs after the P wave (atrial depolarization) and before the T wave (ventricular repolarization), signaling the ventricles are activating to contract. The P wave corresponds to atrial depolarization, the T wave to ventricular repolarization, and the U wave (when present) is a smaller, separate deflection related to late repolarization. So the QRS complex is the ventricular depolarization waveform.

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