Document Detail


In vitro evaluation of prosthetic heart valves: anomalies and limitations.
MedLine Citation:
PMID:  7116789     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
The in vitro evaluation of fifteen commercially available prosthetic heart valves is described. The group comprised both mechanical and bioprosthetic valves. The experimental studies were carried out in a steady flow circuit which included a flexible valve test section, the geometry of which was modelled on the aortic anatomy. The fluidic performance of the valves was examined over a range of flows and in particular, the phenomenon of "pressure recovery" distal to the valve was studied in depth. A number of theoretical parameters which might be used to define valve performance were evaluated but none was found to be ideal. The conclusions of the study emphasise the limitations of such in vitro testing and the danger of extrapolating such experimental data to the possible valve performance in vivo.
Authors:
W B Tindale; M M Black; T R Martin
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Clinical physics and physiological measurement : an official journal of the Hospital Physicists' Association, Deutsche Gesellschaft für Medizinische Physik and the European Federation of Organisations for Medical Physics     Volume:  3     ISSN:  0143-0815     ISO Abbreviation:  Clin Phys Physiol Meas     Publication Date:  1982 May 
Date Detail:
Created Date:  1982-12-02     Completed Date:  1982-12-02     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  8209031     Medline TA:  Clin Phys Physiol Meas     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  115-30     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Aortic Valve / physiology
Bioprosthesis*
Heart Valve Prosthesis*
Hemodynamics
Humans
Models, Cardiovascular
Prosthesis Design
Rheology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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