Document Detail

Flow on the symmetry plane of a total cavo-pulmonary connection.
MedLine Citation:
PMID:  11955499     Owner:  NLM     Status:  MEDLINE    
The flow inside a total cavo-pulmonary connection, a bypass operation of the right heart adopted in the presence of congenital malformation, is here studied for a specific geometry which has been recently introduced in clinics. The analysis has been performed by preliminary experimental observation and a novel Navier-Stokes formulation on the symmetry plane. This method, once some basic hypotheses are verified, allows to reproduce the flow on the symmetry plane of a three-dimensional field by using an extension of the two-dimensional approach. The analysis has confirmed the existence of a central vortex showing that it is not a real vortex (i.e. a place with accumulation of vorticity) but, rather, a weakly dissipative recirculating zone. It is surrounded by a shear layer that becomes spontaneously unsteady at moderately high Reynolds number. The topological changes and energy dissipation have been analysed in both cases of unbalanced and of balanced pulmonary artery and caval flows.
G Bolzon; G Pedrizzetti; M Grigioni; L Zovatto; C Daniele; G D'Avenio
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Journal of biomechanics     Volume:  35     ISSN:  0021-9290     ISO Abbreviation:  J Biomech     Publication Date:  2002 May 
Date Detail:
Created Date:  2002-04-16     Completed Date:  2003-08-05     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0157375     Medline TA:  J Biomech     Country:  United States    
Other Details:
Languages:  eng     Pagination:  595-608     Citation Subset:  IM    
Dipartimento Ingregneria Civile, Universitá di Trieste, Piazzale Europa 1, 34127 Trieste, Italy.
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MeSH Terms
Blood Flow Velocity
Computer Simulation
Heart Bypass, Right*
Heart Defects, Congenital / surgery
Hemorheology / methods*
Models, Cardiovascular
Regional Blood Flow

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