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Anatomic study of the tricuspid valve in children

L R Gerola1, N Wafae, M C Vieira

  • 1Department of Morphology, Federal University of São Paulo, Brasil.

Surgical and Radiologic Anatomy : SRA
|August 9, 2001
PubMed

Insights

This study analyzed the anatomy of the pediatric right atrioventricular valve, finding variations in cusp number and morphometrics. Three cusps were most common, with distinct characteristics for anterior, septal, and posterior valve components.

Area of Science:

  • Pediatric Cardiology
  • Cardiac Anatomy
  • Congenital Heart Disease

Background:

  • The right atrioventricular valve's anatomy in infants is crucial for understanding congenital heart defects.
  • Previous studies have not fully detailed the morphometric variations in this valve in young children.

Purpose of the Study:

  • To conduct an detailed anatomic study of the right atrioventricular valve in children under one year of age.
  • To characterize cusp number, morphometrics, papillary muscles, tendinous cords, and fibrous ring dimensions.

Main Methods:

  • Conservative dissection of the heart valve in pediatric specimens.
  • Quantitative analysis of cusp base width, depth, papillary muscle count, tendinous cord count, and fibrous ring diameter.
  • Regional analysis of the fibrous ring (anterior, posterior, septal) for cusp localization.

Main Results:

  • The number of cusps ranged from two to four, with three cusps being the most frequent.
  • Anterior and septal cusps exhibited larger bases and more tendinous cords compared to posterior and anterolateral cusps.
  • Significant variability was observed in the posterior region, with undeveloped tissue noted in 35.7% of cases.

Conclusions:

  • The right atrioventricular valve in infants displays considerable morphometric variability.
  • Understanding these variations is essential for diagnosing and managing congenital heart conditions affecting this valve.

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