Second Heart Sound - Physiologically Split #1

During normal breathing, the timing between the aortic and pulmonic components of the second heart sound varies. This causes the second heart sound to be split.

Maximum splitting occurs at peak inspiration. In the example you are hearing the splitting of the second heart sound is 60 milliseconds at peak inspiration and zero splitting at peak expiration.

Second Heart Sound - Physiologically Split #1
The recommended auscultation position for the stethoscope is the Pulmonic position. For this sound, use stethoscope's Bell.


maneuver
The recommended patient position is Supine

Phonocardiogram

waveform
This waveform plots sound amplitude on the vertical axis against time on the horizontal axis.

Heart Animation

Lessons
left button        right button



Listening Tips
A synopsis of important sound features and timing for this abnormality.
S2: Splitting widest at peak inspiration.
CaseID34
CourseID22
CourseCaseOrder3
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