Essential Heart Sounds

Mid-Systolic Click

This lesson presents a mid-systolic click. It was auscultated at the mitral valve area. The first and second heart sounds are normal. The second heart sound is unsplit and no murmur is present so that you can concentrate on the systolic click. A mid-systolic click is often followed by a late systolic murmur of mitral valve leaflet prolapse. Use the 'Visual' tab to see the mitral valve posterior leaflet prolapse. The mid-systolic click is produced by the sudden prolapse of the leaflet.

Listen

patient torso with stethoscope chestpiece

The patient's position should be supine.

Visualize

Observe

Play the animation and observe that the mitral valve posterior leaflet prolapses. The mid-systolic click is produced by the sudden prolapse of the leaflet.

Authors and Reviewers

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