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Insight into normal mitral and tricuspid annular dynamics in pediatrics: a real-time three-dimensional echocardiographic study.

Authors
  • Nii, Masaki1
  • Roman, Kevin S
  • Macgowan, Christopher K
  • Smallhorn, Jeffrey F
  • 1 Division of Cardiology, The Hospital for Sick Children, The University of Toronto, Faculty of Medicine, Toronto, Ontario, Canada. , (Canada)
Type
Published Article
Journal
Journal of the American Society of Echocardiography : official publication of the American Society of Echocardiography
Publication Date
Aug 01, 2005
Volume
18
Issue
8
Pages
805–814
Identifiers
PMID: 16084332
Source
Medline
License
Unknown

Abstract

MV area change differs from adults, which may be explained by a more compliant myocardium in children. Greater lateral forces on TV prevent it from becoming circular, thus, preserving valve competency. Both valves show a bending motion, which becomes most prominent during isovolumic relaxation continuing into early diastole for the TV, suggesting a relationship with torsional forces within the ventricles.

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