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The p wave of a normal Electrocardiogram indicates

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The p wave of a normal Electrocardiogram indicates

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Correct Answer: Option A
The P wave indicates atrial depolarization. The P wave occurs when the sinus node, also known as the sinoatrial node, creates an action potential that depolarizes the atria. The P wave should be upright in lead II if the action potential is originating from the SA node.
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