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Hemodynamic impact of helical designed graft versus straight conventional arterio-venous loop grafts

Koen Van Canneyt UGent, Gianluca De Santis UGent, Sunny Eloot UGent, Patrick Segers UGent and Pascal Verdonck UGent (2011) Cardiovascular fluid mechanics, book of abstracts. p.44-46
abstract
Four 3D-models of an arterio-venous graft, a connection between an artery and a vein as vascular access for hemodialysis, were studied: One model of a conventional straight loop graft, and the others with helical design. All models were meshed with a hexahedral, structured and conformal grid. The hypothesis that the helical design reduces intimal hyperplasia formation through the reduction of unfavorable hemodynamic conditions was studied by evaluating low time average wall shear stress (TAWSS), high oscillatory shear index (OSI) and high elative residence time (RRT) zones. In all cases of the helical design, the area of low TAWSS, high OSI and high RRT is reduced. The design with modest helicity already lowered the area with high OSI, while only the strong helical design lowered the areas with low TAWSS and high RRT. It can be concluded that the areas with unfavorable hemodynamic conditions at the upper wall of the venous anastomosis can be lowered by sufficient helicity but not fully eliminated.
Please use this url to cite or link to this publication:
author
organization
year
type
conference
publication status
published
subject
keyword
helicity, cfd, Vascular Access, graft
in
Cardiovascular fluid mechanics, book of abstracts
pages
44 - 46
publisher
Cagliari University, Faculty of Engineering
place of publication
Cagliari, Italy
conference name
Cardiovascular Fluid Mechanics (EUROMECH 529 - 2011) : from theoretical aspects to diagnostic and therapeutic support (CVFM - 2011)
conference location
Cagliari, Italy
conference start
2011-06-27
conference end
2011-06-29
language
English
UGent publication?
yes
classification
C1
copyright statement
I have retained and own the full copyright for this publication
id
1890913
handle
http://hdl.handle.net/1854/LU-1890913
date created
2011-08-19 13:18:07
date last changed
2011-08-24 11:28:28
@inproceedings{1890913,
  abstract     = {Four 3D-models of an arterio-venous graft, a connection between an artery and a vein as vascular access for hemodialysis, were studied: One model of a conventional straight loop graft, and the others with helical design. All models were meshed with a hexahedral, structured and conformal grid. The hypothesis that the helical design reduces intimal hyperplasia formation through the reduction of unfavorable hemodynamic conditions was studied by evaluating low time average wall shear stress (TAWSS), high oscillatory shear index (OSI) and high elative residence time (RRT) zones. In all cases of the helical design, the area of low TAWSS, high OSI and high RRT is reduced. The design with modest helicity already lowered the area with high OSI, while only the strong helical design lowered the areas with low TAWSS and high RRT. It can be concluded that the areas with unfavorable hemodynamic conditions at the upper wall of the venous anastomosis can be lowered by sufficient helicity but not fully eliminated.},
  author       = {Van Canneyt, Koen and De Santis, Gianluca and Eloot, Sunny and Segers, Patrick and Verdonck, Pascal},
  booktitle    = {Cardiovascular fluid mechanics, book of abstracts},
  keyword      = {helicity,cfd,Vascular Access,graft},
  language     = {eng},
  location     = {Cagliari, Italy},
  pages        = {44--46},
  publisher    = {Cagliari University, Faculty of Engineering},
  title        = {Hemodynamic impact of helical designed graft versus straight conventional arterio-venous loop grafts},
  year         = {2011},
}

Chicago
Van Canneyt, Koen, Gianluca De Santis, Sunny Eloot, Patrick Segers, and Pascal Verdonck. 2011. “Hemodynamic Impact of Helical Designed Graft Versus Straight Conventional Arterio-venous Loop Grafts.” In Cardiovascular Fluid Mechanics, Book of Abstracts, 44–46. Cagliari, Italy: Cagliari University, Faculty of Engineering.
APA
Van Canneyt, K., De Santis, G., Eloot, S., Segers, P., & Verdonck, P. (2011). Hemodynamic impact of helical designed graft versus straight conventional arterio-venous loop grafts. Cardiovascular fluid mechanics, book of abstracts (pp. 44–46). Presented at the Cardiovascular Fluid Mechanics (EUROMECH 529 - 2011) : from theoretical aspects to diagnostic and therapeutic support (CVFM - 2011), Cagliari, Italy: Cagliari University, Faculty of Engineering.
Vancouver
1.
Van Canneyt K, De Santis G, Eloot S, Segers P, Verdonck P. Hemodynamic impact of helical designed graft versus straight conventional arterio-venous loop grafts. Cardiovascular fluid mechanics, book of abstracts. Cagliari, Italy: Cagliari University, Faculty of Engineering; 2011. p. 44–6.
MLA
Van Canneyt, Koen, Gianluca De Santis, Sunny Eloot, et al. “Hemodynamic Impact of Helical Designed Graft Versus Straight Conventional Arterio-venous Loop Grafts.” Cardiovascular Fluid Mechanics, Book of Abstracts. Cagliari, Italy: Cagliari University, Faculty of Engineering, 2011. 44–46. Print.