Document Detail


Anisotropic elasticity and strength of glutaraldehyde fixed bovine pericardium for use in pericardial bioprosthetic valves.
MedLine Citation:
PMID:  8126028     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Uniaxial tensile tests were performed on glutaraldehyde fixed bovine pericardial strips prepared from chemically modified pericardial samples. These samples originated from an area which demonstrated anisotropic mechanical properties in the native material and which is suitable for the construction of leaflets for pericardial bioprostheses. After glutaraldehyde fixation the tissue had retained its anisotropicity in stiffness and strength in two orthogonal directions. In the range of the functional stresses for a heart valve leaflet (< 1 MPa) the unconstrained fixation regime had modified the initial anisotropic elastic behavior into a more isotropic one. The implications of these findings are that leaflets manufactured from bovine pericardium can be made to resemble, to a degree, the well known anisotropy found in two orthogonal directions in natural human heart valve leaflets, or porcine bioprosthetic heart valve leaflets.
Authors:
P Zioupos; J C Barbenel; J Fisher
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of biomedical materials research     Volume:  28     ISSN:  0021-9304     ISO Abbreviation:  J. Biomed. Mater. Res.     Publication Date:  1994 Jan 
Date Detail:
Created Date:  1994-04-12     Completed Date:  1994-04-12     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0112726     Medline TA:  J Biomed Mater Res     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  49-57     Citation Subset:  IM    
Affiliation:
Department of Biology, University of York, UK.
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MeSH Terms
Descriptor/Qualifier:
Animals
Anisotropy
Bioprosthesis*
Cattle
Elasticity
Female
Fixatives
Glutaral
Heart Valve Prosthesis*
Pericardium / chemistry*
Tensile Strength
Chemical
Reg. No./Substance:
0/Fixatives; 111-30-8/Glutaral

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


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