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Related Experiment Videos

Flow in the early embryonic human heart: a numerical study.

C G DeGroff1, B L Thornburg, J O Pentecost

  • 1University of Colorado Health Sciences Center, The Childrens Hospital, 1056 E. 19th Avenue, B-100, Denver, CO 80218, USA.

Pediatric Cardiology
|March 13, 2003
PubMed
Summary

Early human embryonic heart models reveal distinct blood flow patterns, termed streaming. Alterations in heart shape significantly change fluid surface stresses, offering insights into abnormal heart development.

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Area of Science:

  • Cardiovascular Science
  • Biophysics
  • Developmental Biology

Background:

  • Computational fluid dynamics (CFD) offers detailed insights into blood flow within complex embryonic heart structures.
  • Understanding early embryonic heart hemodynamics is crucial for identifying factors contributing to congenital heart defects.

Purpose of the Study:

  • To demonstrate the existence of blood flow streaming in early human embryonic hearts (Stages 10 and 11).
  • To analyze how changes in fetal heart lumen shape affect fluid surface stresses.
  • To investigate the role of fluid dynamics in abnormal heart development.

Main Methods:

  • Digitization of Stage 10 and 11 human embryonic hearts from 2D images to create 3D models.
  • Application of CFD for steady and pulsatile flow solutions.

Related Experiment Videos

  • Simulation of altered heart lumen shapes and analysis of resulting shear stress changes.

    • Main Results:

    • Evidence of blood flow streaming was observed, with distinct flow paths in the cardiac lumen.
    • Significant changes in shear stress were detected in artificially reshaped embryonic heart lumens.
    • Streaming patterns persisted in both steady and pulsatile flow simulations.

    Conclusions:

    • Blood flow streaming is a characteristic feature of early embryonic heart development.
    • Embryonic heart lumen shape anomalies correlate with altered fluid shear stress distributions.
    • These fluid dynamic findings may elucidate the mechanisms underlying abnormal heart development.