What physiological event does the P wave on an electrocardiogram (ECG) represent?

What physiological event does the P wave on

Multiple choice — select the best answer

AVentricular depolarization
BAtrial repolarization
CVentricular repolarization
DAtrial depolarization

✓ Correct answer: D. Atrial depolarization Answer: Atrial depolarization The CFRN/CTRN should be able to identify the P wave on an ECG and understand what it represents. The P wave corresponds to the depolarization of the atria, which precedes atrial contraction. This is a crucial part of the cardiac cycle because it initiates the electrical impulse that spreads through the atria, resulting in atrial systole. Distinguishing between atrial and ventricular depolarization is important for interpreting ECGs correctly.

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What physiological event does the P wave on an electrocardiogram (ECG) represent?

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