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First Heart Sound (Markedly Split) | #40

If the splitting of the first heart sound is large (about 50 milliseconds), it is an indication of an abnormal condition called Right Bundle Branch Block. The splitting is most clearly heard at the tricuspid area. In the mitral valve area, the mitral component is louder. At 50 milliseconds, the splitting of the first heart sound is clearly audible.

Auscultation Audio

auscultation sound from lesson
waveform

Technique

Patient position
The patient's position should be supine.

Auscultation Tips

S1:Splitting.
Features:Auscultate this sound over tricuspid and mitral areas

Sound Wave



Observe Cardiac Animation

Authors and Sources

Authors and Reviewers


Sources

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First Heart Sound (Markedly Split) | #40



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