| Flow changes in the aorta associated with the deployment of a AAA stent graft. | |
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MedLine Citation:
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PMID: 12649014 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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The purpose of this study was to investigate the hemodynamic implications of a proximal shift in the aortic bifurcation that results from abdominal aortic aneurysm (AAA) stent graft deployment. A flow model was constructed in which an anatomically accurate model of the aorta was subjected to physiologic pulsatile flow. The model included the celiac, superior mesenteric, left and right renal arteries. The aortic bifurcation, leading to the right and left iliac arteries was included, as well as the lumbar curvature. Flow simulations were performed under resting and mild exercise conditions with and without a Cordis AAA stent graft deployed. Flow patterns were visualized with dye injection and recorded onto video. The flow rates through the iliac and renal arteries were continuously monitored using ultrasonic flowmeters. Flow visualization revealed that flow disturbances at the level of the renal arteries were slightly increased with the deployment of the stent graft. The orientation of the endolegs within the aorta had no perceptible effect on these disturbances. Under mild exercise conditions, very little flow disturbance was observed. In conclusion, there are slight changes in flow disturbance near the renal arteries due to stent graft deployment, but these changes would not be expected to have significant clinical implications. |
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Authors:
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P W Walsh; S Chin-Quee; J E Moore |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Medical engineering & physics Volume: 25 ISSN: 1350-4533 ISO Abbreviation: Med Eng Phys Publication Date: 2003 May |
Date Detail:
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Created Date: 2003-03-21 Completed Date: 2003-11-12 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 9422753 Medline TA: Med Eng Phys Country: England |
Other Details:
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Languages: eng Pagination: 299-307 Citation Subset: IM |
Affiliation:
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Biomedical Engineering Institute, Florida International University, Miami, Florida 33199, USA. |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aorta
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physiopathology*,
surgery* Aortic Aneurysm, Abdominal / physiopathology*, surgery* Blood Flow Velocity Blood Vessel Prosthesis Equipment Failure Analysis / methods* Exercise Humans Pulsatile Flow Renal Artery / physiopathology*, surgery Reproducibility of Results Sensitivity and Specificity Stents* |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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