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CCRN Critical Care Nursing

Category - Adult

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A student nurse rotating in the emergency department overhears the emergency room physician explaining to the client about heart block and mentions the electrical impulse of the heart. Where does the electrical impulse in the heart begin?

Atrioventricular node
Right atrium
Left atrium
Sinoatrial node

Explanation

Answer: D - The electrical impulse in the heart begins at the Sinoatrial node, which is the pacemaker of the heart and coordinates normal sinus rhythm. It is located near the entrance of the superior vena cava in the right atrium.

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CCRN Critical Care Nursing

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CCRN Critical Care Nursing

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