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Atrial Septal Defect
- C402, #110
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play
pause
Listen for 2-3 minutes
Supine
Diaphragm
Listening Tips
Systole:
Diamond shaped, brief, early murmur.
S2:
Fixed splitting.
Diastole:
Diamond shaped, brief, early murmur.
Repetition Training - Intermediate Heart Sounds
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Lesson Text
This is an auscultation example of an atrial septal defect as heard at the pulmonic position.
Atrial Septal Defect is a congenital condition associated with abnormal blood flow between the left atrium and the right atrium.
Before birth there is a large connection between right and left atria. During development of the fetus the connection gradually disappears. However, in some cases the opening persists and is known as an atrial septal defect.
Both the first and second heart sounds are split. The second heart sound splitting is fixed at 80 milliseconds.
There is a brief diamond shaped murmur in early systole and another brief diamond shaped murmur in early diastole
In the anatomy tab you see an enlarged right atrium and right ventricle.
You see turbulent blood flow across the tricuspid valve between the right atrium and the right ventricle (the diastolic murmur). This is caused by blood flow from the left atrium into the right atrium through the atrial septal defect.
There is further turbulent flow into the pulmonary artery causing the systolic murmur.
Comments on this beta version will be welcomed. Send to: comments@easyauscultation.com
soundID
88
maneuver
Supine
Title
Atrial Septal Defect
Position
Pulmonic
realSoundID
5106
caseID
110
S1
Split
Systole
Diamond shaped, brief, early murmur
S2
Fixed splitting
Diastole
Diamond shaped, brief, early murmur
features
lung sounds
False
chestpiece
Diaphragm
c402
CaseID
110
CourseID
29
CourseCaseOrder
3
ID
100