Auscultation in Primary Care

Aortic Regurgitation (Decrescendo Diastolic Murmur) C31

Virtual Auscultation

patient torso with stethoscope chestpiece

The patient's position should be sitting leaning forward.

Lesson

This is an example of a decrescendo murmur starting early in diastole. The first and second heart sounds are normal. The decrescendo murmur is high-pitched. The anatomy video shows an enlarged left ventricle with normal contractility. You can see regurgitant flow from the aorta into the left ventricle which causes the murmur.

Waveform

Heart Sounds Video

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