| Numerical and experimental models of post-operative realistic flows in stenosed coronary bypasses. | |
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MedLine Citation:
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PMID: 11448697 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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By means of both experimental and finite element methods, we simulated three-dimensional unsteady flows through coronary bypass anastomosis. The host artery includes a stenosis shape located at two different distances of grafting. The inflow rates are issued from in vivo measurements in patients who had undergone coronary bypass surgery a few days before. We provide a comparison between experimental and numerical velocity profiles coupled with the numerical analysis of spatial and temporal wall shear stress evolution. The interaction between the graft and coronary flows has been demonstrated. The phase inflow difference can partly be responsible for specific flow phenomena: jet deflection towards a preferential wall or feedback phenomenon that causes the flapping of the post-stenotic jet during the cardiac cycle. In conclusion, we showed the sensitivity of these typical flows to distance of grafting, inflows waveforms but also to their phase difference. |
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Authors:
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C Bertolotti; V Deplano; J Fuseri; P Dupouy |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Journal of biomechanics Volume: 34 ISSN: 0021-9290 ISO Abbreviation: J Biomech Publication Date: 2001 Aug |
Date Detail:
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Created Date: 2001-07-12 Completed Date: 2001-10-18 Revised Date: 2009-11-11 |
Medline Journal Info:
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Nlm Unique ID: 0157375 Medline TA: J Biomech Country: United States |
Other Details:
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Languages: eng Pagination: 1049-64 Citation Subset: IM |
Affiliation:
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IRPHE UMR no 6594/ESM2 Laboratoire de Biomécanique Cardiovasculaire Technopôle de Château Gombert, 13451 Cedex 20, Marseille, France. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Blood Flow Velocity Constriction, Pathologic / physiopathology Coronary Artery Bypass* Hemorheology Humans Models, Biological Vascular Patency* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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