| Numerical investigation of blood flow in a sequential aorto-coronary bypass graft model. | |
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MedLine Citation:
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PMID: 17945605 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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Sequential grafting technique is adopted when one or more of the coronary arteries are blocked or severely narrowed. The objective of this study was to understand the influence of the anastomosis configuration on the blood flow in the three-dimensional coronary artery bypass graft (CABG) model. The finite volume technique was employed to model the 3-D blood flow pattern to determine the velocity and WSS distributions. This study presents the flow-field distributions of the velocity and WSS at two instances of the cardiac cycle, one during start of ejection (t=0.0 s) and the other during early diastole (t=0.32 s). Our results reveal that maximum wall shear stress was observed at the toe of the end-to side anastomosis. The smooth flow patterns observed in the side-to-side anastomosis region resulted in an almost uniform variation of WSS. The present work indicates that a side-to-side anastomosis would result in a better graft patency than an end-to-side anastomosis. |
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Authors:
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Meena S; Dhanjoo N Ghista; Leok Poh Chua; Tan Yong Seng |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference Volume: 1 ISSN: 1557-170X ISO Abbreviation: Conf Proc IEEE Eng Med Biol Soc Publication Date: 2006 |
Date Detail:
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Created Date: 2007-10-23 Completed Date: 2008-03-19 Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 101243413 Medline TA: Conf Proc IEEE Eng Med Biol Soc Country: United States |
Other Details:
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Languages: eng Pagination: 875-8 Citation Subset: IM |
Affiliation:
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Media Division, Institute for Infocomm Research, Nanyang Technological University, Singapore. meena@i2r.a-star.edu.sg |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Aorta
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physiology*,
surgery* Blood Flow Velocity / physiology* Blood Pressure / physiology Computer Simulation Coronary Artery Bypass* Coronary Vessels / physiology*, surgery* Humans Models, Cardiovascular* Pulsatile Flow / physiology Shear Strength |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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