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Mitral Valve Prolapse 708 Lesson

patient thorax when auscultating by stethoscope

patient position during auscultation
The patient was supine during auscultation.

Description

On this page, we present mitral valve prolapse which is amurmur t]at 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 708


Authors and Sources

Authors and Reviewers

Sources

  • 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
  • PESI Faculty - Diane S Wrigley
  • 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




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