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Mitral Regurgitation and Aortic Regurgitation

Virtual Auscultation

patient torso with stethoscope chestpiece
patient position during auscultation

The patient's position should be sitting leaning forward.

Lesson

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).

Waveform





Heart Sounds Video

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 Reviewers

Authored by Dr. Jonathan Keroes, MD and David Lieberman, Developer, Virtual Cardiac Patient. Medically reviewed by Dr. Barbara Erickson, PhD, RN, CCRN. Last Update: 11/28/2021


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