| In-vivo measurements of blood flow velocity profiles in canine ilio-femoral anastomotic bypass grafts. | |
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MedLine Citation:
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PMID: 9083846 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In-vivo velocity profiles were recorded with a 20 MHz 80-channel pulsed Doppler ultrasound velocimeter in canine end-to-side ilio-femoral anastomotic grafts. The geometries were obtained from casts of the anastomotic region, and flow rates were measured with electromagnetic flow probes. Three cases reported here include a "standard" geometry, which was similar to previously studied in vitro models, a stenosed geometry, and a case with below average flow rate. Observed flow features include separation at the hood and toe, movement of the floor stagnation point, and skewed profiles in the proximal outflow segment. Out-of-plane curvature and lateral displacement of the anastomosis inlet appear to have a strong effect on the flow fields. In addition, compliance affects the instantaneous flow rates within the proximal and distal branches. |
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Authors:
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S A Jones; D P Giddens; F Loth; C K Zarins; F Kajiya; I Morita; O Hiramatsu; Y Ogasawara; K Tsujioka |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S.; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Journal of biomechanical engineering Volume: 119 ISSN: 0148-0731 ISO Abbreviation: J Biomech Eng Publication Date: 1997 Feb |
Date Detail:
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Created Date: 1997-05-29 Completed Date: 1997-05-29 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 7909584 Medline TA: J Biomech Eng Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 30-8 Citation Subset: IM |
Affiliation:
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Department of Biomedical Engineering, Johns Hopkins University, Baltimore, MD 21218, USA. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Anastomosis, Surgical Animals Blood Flow Velocity* Compliance Constriction, Pathologic / ultrasonography Disease Models, Animal Dogs Femoral Artery / surgery, ultrasonography* Femoral Vein / transplantation* Iliac Artery / surgery, ultrasonography* Jugular Veins / transplantation* Models, Cardiovascular* Vascular Patency |
| Grant Support | |
ID/Acronym/Agency:
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HL15062-19/HL/NHLBI NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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