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Mitral Valve Prolapse Lesson

Virtual Auscultation

patient torso with stethoscope chestpiece

patient position during auscultation
The patient's position is supine.

Lesson

The mitral valve prolapse murmur is medium pitched with a diamond shaped waveform. This murmur begins immediately after a mid systolic click and continues to the end of systole.

The intensity of the murmur increases and its starting point begins earlier in systole as left ventricular volume decreases (going from supine to standing). The intensity of the murmur and its starting position move later in systole as the volume increases (by raising the legs while in the supine position). The mid-systolic click also moves in tandem with the murmur.

On the cardiac animation video, observe that the murmur is caused by the prolapse of the posterior mitral valve leaflet. The murmur is illustrated by turbulent flow from the left ventricle into the left atrium.

Waveform




Heart Sounds Video



Authors and Sources

Authors and Reviewers

Sources

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