| Flow study of an extracardiac connection with persistent left superior vena cava. | |
| | |
MedLine Citation:
|
PMID: 16580435 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
BACKGROUND: Numerous studies have sought to optimize the design of total cavopulmonary connections with a single superior vena cava. This study was directed to the 2% to 4.5% of the population with dual superior venae cavae, investigating the flow fields associated with such total cavopulmonary connection anatomies. Additionally, it demonstrates the potential use of computational designs and simulations as surgical planning tools. METHODS: A 3-dimensional model of a total cavopulmonary connection with bilateral superior venae cavae was reconstructed from a patient's magnetic resonance images and investigated experimentally and numerically to assess the power losses and flow structures within the connection. On the basis of these results, a virtual operation was performed in the computer to improve the original connection design. The modified anatomy was studied numerically. RESULTS: Because of a smooth connection with an extracardiac conduit and no major dimension mismatch between the baffle and the connecting vessels, the original anatomy yielded smooth flow fields, low power losses, and few disturbances. However, a large offset between the inferior vena cava and the left superior vena cava resulted in flow stasis and unbalanced hepatic flow distribution. Shifting the inferior vena cava and positioning it between the 2 superior venae cavae resulted in a 7% decrease in power losses and eliminated the associated flow stasis regions in the main pulmonary artery segment. CONCLUSIONS: This study demonstrates the potential use of computer-aided design and numeric simulations for surgical planning. It shows that locating the inferior vena cava between the superior venae cavae may lead to better-balanced lung perfusion. This may require suturing the right and left superior venae cavae closer to each other during the hemi-Fontan or Glenn stage. |
| | |
Authors:
|
Diane A de Zélicourt; Kerem Pekkan; James Parks; Kirk Kanter; Mark Fogel; Ajit P Yoganathan |
Related Documents
:
|
9717995 - Central venous pressure and its effect on blood loss during liver resection. 8560415 - The effect of desmopressin on reducing blood loss in cardiac surgery--a meta-analysis o... 18331175 - Reductions in blood loss with a bipolar sealer in total hip arthroplasty. 15934985 - Intraoperative blood loss during living donor liver transplantation: an analysis of 635... 6646905 - Hemodynamics in experimental hypernatremic dehydration with special reference to indivi... 17077105 - Subthalamic stimulation modulates cortical control of urinary bladder in parkinson's di... |
Publication Detail:
|
Type: Case Reports; Journal Article; Research Support, N.I.H., Extramural |
Journal Detail:
|
Title: The Journal of thoracic and cardiovascular surgery Volume: 131 ISSN: 1097-685X ISO Abbreviation: J. Thorac. Cardiovasc. Surg. Publication Date: 2006 Apr |
Date Detail:
|
Created Date: 2006-04-03 Completed Date: 2006-06-06 Revised Date: 2007-11-14 |
Medline Journal Info:
|
Nlm Unique ID: 0376343 Medline TA: J Thorac Cardiovasc Surg Country: United States |
Other Details:
|
Languages: eng Pagination: 785-91 Citation Subset: AIM; IM |
Affiliation:
|
Wallace H. Coulter Department of Biomedical Engineering, Georgia Institute of Technology and Emory University, Atlanta, Ga 30332-0535, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Anastomosis, Surgical Child Computer-Aided Design Fontan Procedure* / methods Humans Liver / blood supply Lung / blood supply Magnetic Resonance Imaging Male Regional Blood Flow Vascular Resistance Vena Cava, Inferior / surgery* Vena Cava, Superior / abnormalities* |
| Grant Support | |
ID/Acronym/Agency:
|
HL67622/HL/NHLBI NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Selective management of the left ventricular outflow tract for repair of interrupted aortic arch wit...
Next Document: Neurodevelopmental outcome after early repair of a ventricular septal defect with or without aortic ...