Title: Hydrodynamic characterisation of ventricular assist devices
Authors: Vandenberghe, Servaas ×
Segers, P
Meyns, Bart
Verdonck, P #
Issue Date: Jul-2001
Publisher: Wichtig editore
Series Title: International journal of artificial organs vol:24 issue:7 pages:470-477
Abstract: A new mock circulatory system (MCS) was designed to evaluate and characterise the hydraulic performance of ventricular assist devices (VADs). The MCS consists of a preload section and a multipurpose afterload section, with an adjustable compliance chamber (C) and peripheral resistor (Rd as principal components. The MCS was connected to a pulse duplicator system for validation, simulating a wide range of afterload conditions. Both pressure and flow were measured, and the values of the different components calculated. The data perfectly fits a 4-element electrical analogon (EA). The MCS was further used to assess the hydrodynamic characteristics of the Medos VAD as an example of a displacement pump. Data was measured for various MCS settings and at different pump rates, yielding device specific pump function graphs for water and pig blood. Our data demonstrate (i) flow sensitivity to preload and afterload and (ii) the effect of test fluid on hemodynamic performance.
ISSN: 0391-3988
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Clinical Cardiac Surgery
ESAT- TELEMIC, Telecommunications and Microwaves
× corresponding author
# (joint) last author

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