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February 1, 1986Journal of Biomechanical Engineering

Two-Component Laser Velocimeter Measurements Downstream of Heart Valve Prostheses in Pulsatile Flow

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Population

In-vitro model of aorta with blood analog fluid

Comparison

Trileaflet aortic prosthetic valve vs Tilting disk aortic prosthetic valve

Design

Preclinical

Authors

WTW. G. TiedermanMSMarc SteinleWPWinfred M. Phillips

Discussion

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Overview

No immediate change to prosthetic valve selection; leaves open hemocompatibility questions for in-vivo validation.

Structured PICO

P
Population
In-vitro model of aorta with blood analog fluid
I
Intervention
Trileaflet aortic prosthetic valve
C
Comparator
Tilting disk aortic prosthetic valve
O
Outcome
Turbulent shear stresses downstream of the valvesurrogate

In-vitro measurements demonstrate that trileaflet valves generate higher peak turbulent shear stresses than tilting disk valves, though stresses decrease more rapidly downstream for the tilting disk valve.

Cite This Study

Tiederman et al. (1986) studied this question.

synapsesocial.com/papers/6a2090226832c8bccb4d1d63https://doi.org/10.1115/1.3138581
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Also Consider

Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Velocity and Shear Stress Distribution Downstream of Mechanical Heart Valves in Pulsatile Flow1989 · 33 citations
  2. 2Unsteady Fluid Dynamics of Several Mechanical Prosthetic Heart Valves Using a Two Component Laser Doppler Anemometer System1997 · 15 citations
  3. 319 mm Sized Bileaflet Valve Prostheses’ flow Field Investigated by Bidimensional Laser Doppler Anemometry (part II: Maximum Turbulent Shear Stresses)1997 · 19 citations
  4. 4Fluid Stresses in the Vicinity of Disk, Ball, and Tilting Disk Prosthetic Heart Valves From In-Vitro Measurements1977 · 23 citations
  5. 5Heart Motion-adapted MR Velocity Mapping of Blood Velocity Distribution Downstream of Aortic Valve Prostheses: Initial Experience2001 · 37 citations