Mechanical Evaluation of Stenting for Saccular Abdominal Aortic Aneurysm Using Fluid Structure Interaction Analysis

Area of Science:

• Cardiovascular Science
• Biomedical Engineering
• Medical Physics

Background:

• Hemodynamic factors are critical in the development of abdominal aortic aneurysms.
• Understanding blood flow alterations is key to effective aneurysm treatment.

Purpose of the Study:

• To analyze hemodynamic changes in a stented saccular abdominal aortic aneurysm model.
• To evaluate the impact of stenting on improving hemodynamic factors within abdominal aortic aneurysms.

Main Methods:

• Computational fluid dynamics (CFD) analysis of a saccular abdominal aortic aneurysm model.
• Simulation of hemodynamic parameters before and after stent implantation.

Main Results:

• Stenting significantly reduced wall shear stress (WSS) within the aneurysm.
• Mean flow velocity, energy loss, and pressure loss coefficient were decreased post-stenting.
• Hemodynamics around the saccular abdominal aortic aneurysm were improved by the stent.

Conclusions:

• Stenting positively alters hemodynamics in abdominal aortic aneurysms.
• The findings support stenting as a potential new treatment modality for abdominal aortic aneurysms.
• Further clinical investigation is warranted to confirm these hemodynamic benefits.