Click to review heart sound.

This split S₁ is due to:

• A

  Asynchronous tricuspid valve closure and pulmonic valve opening.

   

• B

  Asynchronous tricuspid valve closure and right atrial contraction.

   

• C

  Asynchronous tricuspid valve closure and mitral valve closure.

   

INCORRECT

Pulmonic valve opening is normally inaudible.

Try again.

INCORRECT

Right atrial contraction is normally inaudible.

Select again.

CORRECT

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