Mitral Valve Prolapse Lesson #708
The patient was supine during auscultation.
Description
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.
Phonocardiogram
Anatomy
Mitral Valve Prolapse
Authors and Sources
Authors and Reviewers
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Heart sounds by Dr. Jonathan Keroes, MD and David Lieberman, Developer, Virtual Cardiac Patient.
- Lung sounds by Diane Wrigley, PA
- Respiratory cases: William French
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David Lieberman, Audio Engineering
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Heart sounds mentorship by W. Proctor Harvey, MD
- Special thanks for the medical mentorship of Dr. Raymond Murphy
- Reviewed by Dr. Barbara Erickson, PhD, RN, CCRN.
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Last Update: 11/10/2021
Sources
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Heart and Lung Sounds Reference Library
Diane S. Wrigley
Publisher: PESI -
Impact Patient Care: Key Physical Assessment Strategies and the Underlying Pathophysiology
Diane S Wrigley & Rosale Lobo - Practical Clinical Skills: Lung Sounds
- Essential Lung Sounds
Diane S. Wrigley, PA-C
Published by MedEdu LLC - PESI Faculty - Diane S Wrigley
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Case Profiles in Respiratory Care 3rd Ed, 2019
William A.French
Published by Delmar Cengage - Essential Lung Sounds
by William A. French
Published by Cengage Learning, 2011 - Understanding Lung Sounds
Steven Lehrer, MD
- Clinical Heart Disease
W Proctor Harvey, MD
Clinical Heart Disease
Laennec Publishing; 1st edition (January 1, 2009) -
Heart and Lung Sounds Reference Guide
PracticalClinicalSkills.com
