Effect of prosthetic mitral valve geometry and orientation on flow dynamics in a model human left ventricle

K. B. Chandran, R. Schoephoerster, K. C. Dellsperger

Research output: Contribution to journalArticle

32 Scopus citations

Abstract

Pulsatile flow dynamics through bileaflet (St Jude and Duromedics), tilting disc (Bjork-Shiley and Omniscience), caged ball (Starr-Edwards), pericardial (Edwards) and porcine (Carpentier-Edwards) mitral valves in a model human left ventricle (LV) were studied. The model human ventricle, obtained from an in situ diastolic casting, was incorporated into a mock circulatory system. Measurements were made at various heart rates and flow rates. These included the transvalvular pressure drop and regurgitation in percent and cm3 beat-1. The effect of valve geometry and the orientation of the valve with respect to the valve annulus was analyzed using a flow visualization technique. Qualitative flow visualization study indicates certain preferred orientations for the tilting disc and bileaflet valve prostheses in order to obtain a smooth washout of flow in the LV chamber.

Original languageEnglish (US)
Pages (from-to)51-57,59-65
JournalJournal of Biomechanics
Volume22
Issue number1
DOIs
StatePublished - 1989

ASJC Scopus subject areas

  • Biophysics
  • Orthopedics and Sports Medicine
  • Biomedical Engineering
  • Rehabilitation

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