ATI RN
ATI Fundamentals Exam Special Unit ADN Questions
Extract:
Question 1 of 5
A nurse auscultates heart sounds. When the nurse hears S2, which valves is the nurse hearing close?
Correct Answer: D
Rationale: The correct answer is D: Aortic and Pulmonic. S2 represents the closure of the aortic and pulmonic valves during the cardiac cycle. After the ventricles contract, the aortic and pulmonic valves close to prevent the backflow of blood into the ventricles. The other choices are incorrect because S2 specifically corresponds to the closure of the aortic and pulmonic valves, not the mitral or tricuspid valves. Option A (Aortic and Mitral) is incorrect because the mitral valve closes during S1, not S2. Option B (Mitral and Pulmonic) is incorrect because the pulmonic valve closes during S2, but the mitral valve does not. Option C (Mitral and Tricuspid) is incorrect because the tricuspid valve closes during S1, not S2.
Question 2 of 5
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Question 3 of 5
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Question 4 of 5
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Question 5 of 5
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