The atrial depolarization in an ECG is represented by which component?

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Multiple Choice

The atrial depolarization in an ECG is represented by which component?

Explanation:
Atrial depolarization is the electrical activation of the atria that triggers atrial contraction. On an ECG, this activity appears as the P wave—the small, smooth deflection that occurs before the QRS complex. The larger QRS complex reflects the ventricles depolarizing, while the T wave shows ventricular repolarization, and the U wave, when present, is a less consistent feature. So, the P wave is the component that represents atrial depolarization.

Atrial depolarization is the electrical activation of the atria that triggers atrial contraction. On an ECG, this activity appears as the P wave—the small, smooth deflection that occurs before the QRS complex. The larger QRS complex reflects the ventricles depolarizing, while the T wave shows ventricular repolarization, and the U wave, when present, is a less consistent feature. So, the P wave is the component that represents atrial depolarization.

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