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Cardiac Conditions Associated with Sudden Death
Commotio Cordis
Sounds
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This is an example of commotio cordis as heard at the mitral valve area.
This condition is caused by blunt force trauma to the chest such as a baseball batter being hit in the chest by a pitch. Severe damage to the right and left ventricles and mitral and tricuspid valves may result.
In the example we are showing, the trauma is limited to the mitral valve leaflets. Rupture of a chordae tendinae has occurred resulting in a systolic murmur.
The first half of the murmur is rectangular. It is followed by a decrescendo late systolic component. This is caused by rapid filling of the left atrium due to torrential mitral regurgitation.
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The recommended auscultation position for the stethoscope is the
Mitral
position. For this sound, use stethoscope's
Diaphragm
.
The recommended patient position is
Supine
Phonocardiogram
This waveform plots sound amplitude on the vertical axis against time on the horizontal axis.
Heart Animation
Lessons
1
Hypertrophic Cardiomyopathy
2
Aortic Stenosis - Severe 2
3
Arrhythmogenic RV Dysplasia
4
Mitral Valve Prolapse (Click with Late Systolic Murmur)
5
Myocarditis
6
Commotio Cordis
7
Ebstein's Anomaly
Practice Drill
Listening Tips
A synopsis of important sound features and timing for this abnormality.
Systole:
Rectangular murmur in first half of systole then decrescendo.
CaseID
116
CourseID
30
CourseCaseOrder
6
ID
108