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Author Question: Upon auscultation, the nurse hears a whooshing sound at the fifth intercostal space. The nurse ... (Read 76 times)

berenicecastro

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on: Jul 23, 2018
Upon auscultation, the nurse hears a whooshing sound at the fifth intercostal space. The nurse recognizes that this sound is
 
  a. The beginning of the systolic phase.
  b. The opening of the aortic valve.
  c. S3, the third heart sound.
  d. Regurgitation of the mitral valve.

Question 2

The P wave is represented by which portion of the conduction system?
 
  a. SA node
  b. AV node
  c. Bundle of HIS
  d. Purkinje network


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elizabethrperez

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Reply #1 on: Jul 23, 2018
Answer to Question 1

ANS: D
A whooshing sound at the fifth intercostal space is a murmur; a prolapsed valve allows regurgitation that is heard as a whooshing sound. The systolic phase begins with ventricular filling and closing of the aortic valve, which is heard as the first heart sound, S1. The third heart sound, S3, is heard with heart failure.

Answer to Question 2

ANS: A
The SA node initiates electrical conduction through the atria. The AV node conducts down through the bundle of HIS and the Purkinje network to cause ventricular contraction.


berenicecastro

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Reply 2 on: Jul 23, 2018
YES! Correct, THANKS for helping me on my review

yeungji

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Reply 3 on: Yesterday
Excellent

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