Mitral Regurgitation and Aortic Regurgitation | #105

This is an auscultation example of moderate regurgitation of both the aortic and mitral valves. The first heart sound is minimally decreased due to minimal closure of the mitral valve leaflets in early systole. The second heart sound is normal. There is a rectangular murmur which takes up most of systole and a decrescendo murmur which takes up most of diastole. Both murmurs are of moderate intensity. The combination of the two murmurs creates a to-and-fro sound character. In the anatomy video you see an enlarged left atrium and left ventricle. You see regurgitant turbulent flow into the left atrium from the left ventricle (the systolic murmur) and regurgitant turbulent flow from the aorta into the left ventricular outflow tract (the diastolic murmur).

Auscultation Audio

auscultation sound from lesson
waveform

Technique

Patient position
The patient's position should be sitting leaning forward.

Auscultation Tips

S1:Minimally reduced intensity
Systole:Rectangular murmur, moderate intensity
Diastole:Decrescendo murmur, moderate intensity

Sound Wave



Observe Cardiac Animation

Play the animation and take note of an enlarged left atrium and left ventricle. Observe regurgitant turbulent flow into the left atrium from the left ventricle (the systolic murmur) and regurgitant turbulent flow from the aorta into the left ventricular outflow tract (the diastolic murmur).
Authors and Sources

Authors and Reviewers


Sources

Return to Reference Guide Index Page
Mitral Regurgitation and Aortic Regurgitation | #105

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