Essential Heart Sounds

Pansystolic Murmur - Mitral Regurgitation

This lesson presents a pansystolic murmur. It is usually associated with mitral regurgitation. Notice that the first and second heart sounds are normal. A mid-frequency rectangular (constant intensity) murmur fills all of systole. Use the 'Visual' tab to play a video animation that shows an enlarged left ventricle and left atrium. The turbulent flow from the left ventricle into the left atrium creates the murmur.

Listen

patient torso with stethoscope chestpiece

The patient's position should be supine.

Visualize

Observe

In the cardiac animation, you can see the enlarged left ventricle and left atrium and turbulent flow from the left ventricle into the left atrium which creates the murmur.

Authors and Reviewers

Authored by Thomas O Brien
. Medically reviewed by Dr. Jonathan Keroes, MD
Last Update: 11/8/2021