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Mitral Valve Prolapse Lesson #708

patient thorax when auscultating by stethoscope

patient position during auscultation
The patient was supine during auscultation.


This mitral valve prolapse murmur is medium pitched and diamond-shaped, beginning immediately after a mid systolic click and continuing until the end of systole.

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

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



Mitral Valve Prolapse

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