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Related Experiment Videos

Supernumerary mitral valve producing subaortic stenosis

J Hatem, R M Sade, A Taylor

    Chest
    |April 1, 1981
    PubMed
    Summary
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    A rare heart defect involving fibromyxomatous tissue obstructing blood flow from the left ventricle was identified in a child. This malformation represents an extreme form of endocardial cushion defects, impacting aortic valve function.

    Area of Science:

    • Cardiology
    • Pediatric Cardiology
    • Congenital Heart Disease

    Background:

    • Subaortic stenosis is a significant cause of left ventricular outflow tract obstruction in children.
    • Endocardial cushion tissue malformations can lead to complex congenital heart defects.

    Observation:

    • A ten-year-old girl presented with severe subaortic stenosis.
    • An unusual fibromyxomatous tissue structure was noted beneath the aortic valve.

    Findings:

    • The observed tissue mimicked a valve, causing obstruction during ventricular systole.
    • This represents an extreme manifestation of obstructive endocardial cushion malformations.

    Implications:

    • Highlights the spectrum of endocardial cushion malformations.

    Related Experiment Videos

  • May inform surgical approaches for complex subaortic stenosis.
  • Emphasizes the importance of detailed anatomical assessment in pediatric cardiac cases.