Hydrodynamic performance of a prototype bioprosthetic valve derived from the pulmonary valve of phoca groenlandica
Biological valves offer significant advantages over mechanical valves, and for this reason, we studied the possibility of using a new animal source such as that of Phoca groenlandica. Four aortic and four pulmonary leaflets were cut radially and their uniaxial tensile testing was evaluated. Three pr...
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ftnkunivathens:oai:lib.uoa.gr:uoadl:2981597 2024-02-11T10:07:57+01:00 Hydrodynamic performance of a prototype bioprosthetic valve derived from the pulmonary valve of phoca groenlandica Agathos, E.A. Shen, M. Styrc, W. Giannakopoulou, S. Lachanas, E. Tomos, P. 2012-01-01 https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:2981597 Αγγλικά English eng uoadl:2981597 https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:2981597 scientific_publication_article Επιστημονική δημοσίευση - Άρθρο Περιοδικού Scientific publication - Journal Article 2012 ftnkunivathens 2024-01-18T18:13:03Z Biological valves offer significant advantages over mechanical valves, and for this reason, we studied the possibility of using a new animal source such as that of Phoca groenlandica. Four aortic and four pulmonary leaflets were cut radially and their uniaxial tensile testing was evaluated. Three prototype pulmonary valves of Phoca groenlandica preserved in buffered glutaraldehyde solution 0.625% at pH 7.4 were mounted on a 19, 21, and 27 mm novel support system (stent) with heart shape commissural posts covered with polytetrafluoroethylene. The valves were tested in a steady flow system, the peak pressure gradients (PPGs) were measured, and the effective orifice areas (EOAs) were calculated for the flows of 3, 4, 5, 6, and 8 L/min. There were five different measurements for each flow variant. Aortic and pulmonary leaflets present no statistically significant difference in failure strength (p = 0.93). The PPGs across the valves for the flow of 3, 4, 5, 6, and 8 L/min for all three tested valves were low and the corresponding calculated EOAs were large. The new bioprosthetic valve derived from the pulmonary valve of Phoca groenlandica mounted on this novel support system presented a satisfactory hydrodynamic performance in a steady flow system. More research is needed before it can be considered suitable for human cardiac valve replacement. Copyright © 2012 by the American Society for Artificial Internal. Article in Journal/Newspaper Phoca groenlandica Pergamos - Library and Information Center of National and Kapodistrian University of Athens Stent ENVELOPE(156.333,156.333,-81.250,-81.250) |
institution |
Open Polar |
collection |
Pergamos - Library and Information Center of National and Kapodistrian University of Athens |
op_collection_id |
ftnkunivathens |
language |
English |
description |
Biological valves offer significant advantages over mechanical valves, and for this reason, we studied the possibility of using a new animal source such as that of Phoca groenlandica. Four aortic and four pulmonary leaflets were cut radially and their uniaxial tensile testing was evaluated. Three prototype pulmonary valves of Phoca groenlandica preserved in buffered glutaraldehyde solution 0.625% at pH 7.4 were mounted on a 19, 21, and 27 mm novel support system (stent) with heart shape commissural posts covered with polytetrafluoroethylene. The valves were tested in a steady flow system, the peak pressure gradients (PPGs) were measured, and the effective orifice areas (EOAs) were calculated for the flows of 3, 4, 5, 6, and 8 L/min. There were five different measurements for each flow variant. Aortic and pulmonary leaflets present no statistically significant difference in failure strength (p = 0.93). The PPGs across the valves for the flow of 3, 4, 5, 6, and 8 L/min for all three tested valves were low and the corresponding calculated EOAs were large. The new bioprosthetic valve derived from the pulmonary valve of Phoca groenlandica mounted on this novel support system presented a satisfactory hydrodynamic performance in a steady flow system. More research is needed before it can be considered suitable for human cardiac valve replacement. Copyright © 2012 by the American Society for Artificial Internal. |
format |
Article in Journal/Newspaper |
author |
Agathos, E.A. Shen, M. Styrc, W. Giannakopoulou, S. Lachanas, E. Tomos, P. |
spellingShingle |
Agathos, E.A. Shen, M. Styrc, W. Giannakopoulou, S. Lachanas, E. Tomos, P. Hydrodynamic performance of a prototype bioprosthetic valve derived from the pulmonary valve of phoca groenlandica |
author_facet |
Agathos, E.A. Shen, M. Styrc, W. Giannakopoulou, S. Lachanas, E. Tomos, P. |
author_sort |
Agathos, E.A. |
title |
Hydrodynamic performance of a prototype bioprosthetic valve derived from the pulmonary valve of phoca groenlandica |
title_short |
Hydrodynamic performance of a prototype bioprosthetic valve derived from the pulmonary valve of phoca groenlandica |
title_full |
Hydrodynamic performance of a prototype bioprosthetic valve derived from the pulmonary valve of phoca groenlandica |
title_fullStr |
Hydrodynamic performance of a prototype bioprosthetic valve derived from the pulmonary valve of phoca groenlandica |
title_full_unstemmed |
Hydrodynamic performance of a prototype bioprosthetic valve derived from the pulmonary valve of phoca groenlandica |
title_sort |
hydrodynamic performance of a prototype bioprosthetic valve derived from the pulmonary valve of phoca groenlandica |
publishDate |
2012 |
url |
https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:2981597 |
long_lat |
ENVELOPE(156.333,156.333,-81.250,-81.250) |
geographic |
Stent |
geographic_facet |
Stent |
genre |
Phoca groenlandica |
genre_facet |
Phoca groenlandica |
op_relation |
uoadl:2981597 https://pergamos.lib.uoa.gr/uoa/dl/object/uoadl:2981597 |
_version_ |
1790606812072902656 |