Hemodynamics analysis of a stented aortic bifurcation / 生物医学工程学杂志
Journal of Biomedical Engineering
;
(6): 1250-1254, 2009.
Article
in Chinese
| WPRIM
| ID: wpr-244650
ABSTRACT
In the treatment of aortic arch dissections involving left subclavian artery (LSA), a double stent implantation is sometimes required to treat the disease of each branch. In this study, aortic arch and LSA were modeled by using Pro/engineer wildfire3. 0. Two deployed stents were inserted in the aortic arch and LSA. There are 3 kinds of model according to the stent struts protruding into the inlet of the collateral branch, and the healthy aortic arch model without any stent was provided as a reference case. We used computational fluid dynamics (CFD) to investigate the flows in the model stents and focused on the changes of blood speed and wall shear stress caused by the implanted stents of different models. The results showed that the stent strcuts protruding into the inlet of LSA induced the conspicuous decrease of blood speed and the emergence of large-scale low shear stress,which would cause thrombogenesis, neointimal hyperplasia and result in in-stent restenosis, so it would be judicious to use dedicated bifurcated stents for treatment of bifurcation lesions.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Aorta
/
Aortic Aneurysm
/
Stress, Mechanical
/
Subclavian Artery
/
General Surgery
/
Stents
/
Prosthesis Implantation
/
Shear Strength
/
Hemodynamics
/
Aortic Dissection
Limits:
Humans
Language:
Chinese
Journal:
Journal of Biomedical Engineering
Year:
2009
Type:
Article
Similar
MEDLINE
...
LILACS
LIS