Title

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

Document Type

Article

Publication Date

1-1-1989

Department

Mechanical Engineering

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 cm beat . 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. © 1989. 3 -1

DOI

10.1016/0021-9290(89)90184-X

First Page

51

Last Page

65

Publication Title

Journal of Biomechanics

Comments

At the time of publication, Richard T. Schoephoerster was affiliated with University of Iowa.

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