Second Heart Sound with Fixed Splitting

Unlock lessons, quizzes and more.

Sign Up
This example shows fixed splitting of the second heart sound. The second heart sound remains unchanged through inspiration and expiration at sixty milliseconds.

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. In a later lesson you will hear the fixed splitting of S2 along with the murmurs of Atrial Septal Defect.
Second Heart Sound with 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

Lessons
left button        right button



Listening Tips
A synopsis of important sound features and timing for this abnormality.
S2: Fixed splitting throughout respiratory cycle.
CaseID46
CourseID24
CourseCaseOrder3
ID34

This website is only for medical professional education. Contact a healthcare provider for medical care.

mededu company logo 2021 © Clinical Skills Education LLC. All Rights Reserved.