Auscultation Training by Repetition

Mitral Regurgitation and Aortic Regurgitation - C403, #105

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waveform of heart or lung sound
Listen for 2-3 minutes
maneuver
Sitting leaning forward
torso
Diaphragm

Listening Tips

S1: Minimally reduced intensity.
Systole: Rectangular murmur, moderate intensity.
Diastole: Decrescendo murmur, moderate intensity.
Repetition Training - More Heart Sounds

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Lesson Text

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 tab 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).

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c403
CaseID105
CourseID28
CourseCaseOrder5
ID95