Abdominal aortic aneurysm (AAA) is a progressive dilation of the infrarenal aorta and results in a significant alteration in local hemodynamic environment [1]. While an aneurysmal diameter of 5.5cm is typically classified as being of high risk, recent studies have demonstrated that maximum wall stress could be a better indicator of an AAA rupture than maximum diameter [2]. The wall stress is greatly influenced by the blood pressure, aneurysm diameter, shape, wall thickness and the presence of thrombus. The work done by Finol et al. suggested that hemodynamic pressure variations have an insignificant effect on AAA wall stress and that primarily the shape of the aneurysm determines the stress distribution. They noted that for peak wall stress studies the static pressure conditions would suffice as the in vivo conditions. Wang et al have developed an isotropic hyperelastic constitutive model for the intraluminal thrombus (ILT). Such models have been used to study the stress distributions in patient specific AAAs [3, 4].
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ASME 2008 Summer Bioengineering Conference
June 25–29, 2008
Marco Island, Florida, USA
Conference Sponsors:
- Bioengineering Division
ISBN:
978-0-7918-4321-5
PROCEEDINGS PAPER
Porohyperelastic Simulation of Abdominal Aortic Aneurysms
Avinash Ayyalasomayajula,
Avinash Ayyalasomayajula
The University of Arizona, Tucson, AZ
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Bruce R. Simon,
Bruce R. Simon
The University of Arizona, Tucson, AZ
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Jonathan P. Vande Geest
Jonathan P. Vande Geest
The University of Arizona, Tucson, AZ
Search for other works by this author on:
Avinash Ayyalasomayajula
The University of Arizona, Tucson, AZ
Bruce R. Simon
The University of Arizona, Tucson, AZ
Jonathan P. Vande Geest
The University of Arizona, Tucson, AZ
Paper No:
SBC2008-193147, pp. 673-674; 2 pages
Published Online:
March 13, 2014
Citation
Ayyalasomayajula, A, Simon, BR, & Vande Geest, JP. "Porohyperelastic Simulation of Abdominal Aortic Aneurysms." Proceedings of the ASME 2008 Summer Bioengineering Conference. ASME 2008 Summer Bioengineering Conference, Parts A and B. Marco Island, Florida, USA. June 25–29, 2008. pp. 673-674. ASME. https://doi.org/10.1115/SBC2008-193147
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