Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Computer simulation: a diagnostic method in comparative studies of valve prostheses

M S Engelman, S E Moskowitz, J B Borman

    The Journal of Thoracic and Cardiovascular Surgery
    |March 1, 1980
    PubMed
    Summary
    This summary is machine-generated.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Unilateral flail chest is seldom a lethal injury.

    Emergency medicine journal : EMJ·2006
    Same author

    Sorin Bicarbon bileaflet valve: a 10-year experience.

    European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery·2002
    Same author

    Nicorandil decreases postischemic actin oxidation.

    Free radical biology & medicine·2001
    Same author

    Novel synthetic selectively degradable vascular prostheses: a preliminary implantation study.

    The Journal of surgical research·2001
    Same author

    Estrogen induces nitric oxide-mediated vasodilation of human mammary arteries in vitro.

    Nitric oxide : biology and chemistry·1999
    Same author

    Bicarbon valve -- European multicenter clinical evaluation.

    European journal of cardio-thoracic surgery : official journal of the European Association for Cardio-thoracic Surgery·1998

    Computer simulations revealed the Björk-Shiley heart valve offers superior laminar flow compared to Starr-Edwards valves. This artificial heart valve design results in fewer eddies and lower pressure gradients, improving hemodynamic performance.

    Area of Science:

    • Biomedical Engineering
    • Cardiovascular Science
    • Computational Fluid Dynamics

    Background:

    • Artificial heart valves are crucial for treating valvular heart disease.
    • Hemodynamic performance of prosthetic valves significantly impacts patient outcomes.
    • Previous comparisons often relied on physical simulators, which have limitations.

    Purpose of the Study:

    • To compare the flow characteristics of Starr-Edwards and Björk-Shiley artificial heart valves.
    • To evaluate hemodynamic performance in both mitral and aortic positions using computer simulation.
    • To demonstrate the utility of computational modeling in prosthetic valve assessment.

    Main Methods:

    • Utilized computer simulation to model blood flow through mechanical heart valves.

    Related Experiment Videos

  • Employed a mathematical model treating blood as a non-Newtonian fluid.
  • Calculated pressure and velocity distributions and visualized flow patterns in 2D.

    • Main Results:

    • The Björk-Shiley valve demonstrated a more favorable laminar flow pattern in both mitral and aortic positions.
    • Fewer flow eddies were observed with the Björk-Shiley prosthesis.
    • Smaller pressure and velocity gradients were computed across the Björk-Shiley occluder.

    Conclusions:

    • Computer simulation is a valuable tool for comparing artificial heart valve hemodynamics.
    • The Björk-Shiley valve exhibits superior flow characteristics compared to the Starr-Edwards valve.
    • Computational methods offer advantages over physical simulators for prosthetic valve testing.