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Variations of the area and shape of the left atrioventricular valve and its cusps and leaflets

Variations de la surface et de la forme de la valve atrioventriculaire gauche, de ses cuspides et languettes

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Summary

Measurement of the areas of the cusps and leaflets of the left atrioventricular valve (LAV) and a study of their shape were performed in 91 normal human hearts, to assess the range of variation and determine the most frequent morphologic pattern. The average areas were as follows: LAV, 904.9 mm2; anterior cusp, 447 mm2; posterior cusp, 457 mm2; anterolateral leaflet, 118.6 mm2; intermediate leaflet, 212.7 mm2; and posteromedial leaflet, 126 mm2. The commonest shape of the leaflets of the posterior cusp, proved to be rectangular.

Résumé

La mesure de la surface des cuspides et des languettes de la valve atrioventriculaire gauche (LAV) et l'étude de leur forme ont été réalisées sur 91 coeurs humains normaux pour évaluer l'éventail des variations et déterminer la disposition morphologique la plus fréquente. Les surfaces moyennes furent les suivantes : LAV 904,9 mm2 ; cuspide antérieure 447 mm2; cuspide postérieure 457 mm2; languette antéro-latérale 118,6 mm2; languette intermédiaire 212,7 mm2; languette postéro-médiale 126 mm2. La forme la plus répandue pour les languettes de la cuspide postérieure s'est avérée être rectangulaire.

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Authors and Affiliations

  1. Department of Anatomy, Faculty of Health Sciences, University of Brasil, Cidade Universitaria, Asa Norte, 70910, Brasilia, DF, Brasil

    AJC Bezerra

  2. Department of Anatomy, V-P OSEC, Faculdade de Medicina, S. Amaro, SP, Brasil

    LJA DiDio

  3. Department of Morphology, Escola Paulista de Medicina, Sao Paulo, SP, Brasil

    JC Prates

Authors
  1. AJC Bezerra
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  2. LJA DiDio
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  3. JC Prates
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Bezerra, A., DiDio, L. & Prates, J. Variations of the area and shape of the left atrioventricular valve and its cusps and leaflets. Surg Radiol Anat 16, 277–280 (1994). https://doi.org/10.1007/BF01627682

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  • DOI: https://doi.org/10.1007/BF01627682

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