Second Heart Sound - Fixed Splitting

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This example shows fixed splitting of the second heart sound. The separation of the two components of the second heart sound remains unchanged through inspiration and expiration at sixty milliseconds in this example.

Fixed splitting of the second heart sound (along with murmurs) indicates the presence of an atrial septal defect, a congenital heart defect in which the intra-atrial septum is incomplete resulting in a hole between the left and right atria.

The murmurs have been eliminated in this lesson so that you can concentrate on the fixed splitting of the second heart sound.

Second Heart Sound - Fixed Splitting
The recommended auscultation position for the stethoscope is the Pulmonic position. For this sound, use stethoscope's Diaphragm.


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

CaseID120
CourseID31
CourseCaseOrder8
ID118