A nurse auscultates heart sounds. When the nurse hears S2, which ...

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A nurse auscultates heart sounds. When the nurse hears S2, which valves is the nurse hearing close?
 
  a. Aortic and mitral
  b. Mitral and tricuspid
  c. Aortic and pulmonic
  d. Mitral and pulmonic

Question 2

A nurse is teaching the patient with mitral valve problems about the valves in the heart. Starting on the right side of the heart, describe the sequence of the blood flow through these valves.
 
  1. Mitral
  2. Aortic
  3. Tricuspid
  4. Pulmonic
  a. 1, 3, 2, 4
  b. 4, 3, 2, 1
  c. 3, 4, 1, 2
  d. 2, 4, 1, 3

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Answer to Question 1

ANS: C
As the ventricles empty, the ventricular pressures decrease, allowing closure of the aortic and pulmonic valves, producing the second heart sound, S2. The mitral and tricuspid produce the first heart sound, S1. The aortic and mitral do not close at the same time. The mitral and pulmonic do not close at the same time.

Answer to Question 2

ANS: C
The blood flows through the valves in the following direction: tricuspid, pulmonic, mitral, and aortic.

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TYSM