Mitral Regurgitation and Aortic Regurgitation Lesson #696

patient thorax when auscultating by stethoscope

patient position during auscultation
The patient was sitting leaning forward during auscultation.

Description

A moderate regurgitation of both the aortic and mitral valves is presented in this lesson. 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. A rectangular murmur takes up most of systole, awhile 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 cardiac animation video, observe an enlarged left atrium and left ventricle. Also notice the 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).

Phonocardiogram

Anatomy

Mitral Regurgitation and Aortic Regurgitation

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





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