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Anatomic basis for mitral valve modelling

K S Kunzelman1, R P Cochran, E D Verrier

  • 1Division of Cardiothoracic Surgery, University of Washington, Seattle 98195.

The Journal of Heart Valve Disease
|September 1, 1994
PubMed
Summary
This summary is machine-generated.

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This study compared human and porcine mitral valve anatomy, finding minimal differences. The porcine mitral valve is a suitable model for further research into mitral valve function and repair.

Area of Science:

  • Cardiovascular Anatomy
  • Comparative Morphology
  • Surgical Anatomy

Background:

  • Growing interest in mitral valve repair and replacement necessitates a deeper understanding of mitral valve anatomy.
  • Previous studies have laid groundwork, but comparative analysis between species remains crucial.

Purpose of the Study:

  • To conduct a detailed comparative review of the functional anatomy of the mitral valve system in humans and pigs.
  • To identify similarities and differences in mitral valve structure to validate the porcine model for research.

Main Methods:

  • Detailed anatomical measurements of intact and excised mitral apparatus in human and porcine specimens.
  • Measurement of annular dimensions, leaflet dimensions (length, height, area), commissural heights, and chordal lengths and distribution.

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  • Planimetric analysis for leaflet area calculation.

    • Main Results:

    • Annular length significantly increased upon valve excision in both species.
    • Posterior leaflet area was consistently larger than anterior leaflet area.
    • Leaflet area exceeded the calculated orifice area; chordal length showed no significant difference, but distribution varied (porcine 8:1, human 5:1 ratio of origins to insertions).

    Conclusions:

    • The porcine mitral valve exhibits significant anatomical similarities to the human mitral valve.
    • The porcine model is validated as appropriate for further investigation of the mitral valve system.
    • Findings support the use of porcine models in research aiming to improve mitral valve repair and replacement techniques.