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How can you differentiate between S1 and S2 heart sounds?

How can you differentiate between S1 and S2 heart sounds?

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Answer #1

The S1 different between S1 & S2 are as such:

S1:

  • It is the first sound of the heart known as " lub" , generated by closure of Mittral & tricuspid valve.
  • It represents systole in conduction of heart.
  • Itis slower than S2 sound.

S2:

  • It is known as "dub".
  • It is generated by ventricular contraction.
  • It is caused by aortic & pulmonic valves
  • It represents diastole and it is louder than S1
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