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Diastolic Murmurs

Aortic Regurgitation - Mild Sounds

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This is an example of mild aortic regurgitation which can be caused by a bicuspid (thickened) aortic valve.

The first heart sound is diminished due to premature closure of the mitral valve leaflets.

An aortic ejection click follows the first heart sound by 75 milliseconds.

S2 is normal.

Systole is silent.

A high pitched decrescendo murmur occupying the first half of diastole can be heard starting immediately after the second heart sound.

The murmur is best heard at Erb's Point and can be accentuated by having the patient sitting up and leaning forward holding his breath after expiration.

In the animation you can see the turbulent blood flow from the aorta into the left ventricle during early diastole. You can see the minimally thickened aortic valve leaflets.



Aortic Regurgitation - Mild
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The recommended auscultation position for the stethoscope is the Erbs-Point position. For this sound, use stethoscope's Diaphragm.


maneuver
The recommended patient position is Sitting leaning forward

Phonocardiogram

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

Heart Animation

Lessons
1Aortic Regurgitation - Mild checkmark
2Pulmonic Regurgitation - Mild
3Mitral Stenosis - Mild
4Mitral Stenosis - Moderate
5Mitral Stenosis - Severe
6Tricuspid Stenosis - Moderate
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Practice Drill



Listening Tips
A synopsis of important sound features and timing for this abnormality.
S1: Can be soft.
Systole: Murmur may be present.
Diastole: Early diastole murmur.
CaseID94
CourseID27
CourseCaseOrder1
ID83



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This website is only for medical professional education. Contact a healthcare provider for medical care. Copyright 2011-2020 © MedEdu LLC. All Rights Reserved. About | Privacy Policy | Email

  • mededu company logo
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  • email share