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Computational study of stented aortic arch aneurysms.

Aike Qiao1, Youjun Liu, Yu Chang

  • 1Beijing Univ. of Technol.

Conference Proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference
|February 7, 2007
PubMed
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Endovascular stents effectively treat aortic arch aneurysms with blebs by reducing blood flow, pressure, and wall shear stress. This promotes thrombus formation and lowers rupture risk, improving patient outcomes.

Area of Science:

  • Cardiovascular research
  • Biomedical engineering
  • Computational fluid dynamics

Background:

  • Aortic arch aneurysms with blebs present complex hemodynamic challenges.
  • Incomplete understanding of hemodynamics in stented aortic arch aneurysms with blebs.

Purpose of the Study:

  • To analyze and compare hemodynamics in stented versus non-stented aortic arch aneurysm models.
  • To evaluate the efficacy of endovascular stents in managing these conditions.

Main Methods:

  • Computational fluid dynamics (CFD) simulations were employed.
  • Hemodynamic parameters including pressure and wall shear stress were analyzed.

Main Results:

  • Stented aneurysm models exhibited significantly diminished intra-aneurysmal flow activity.

Related Experiment Videos

  • Reduced pressure and wall shear stress were observed within the bleb region of stented models.
  • These hemodynamic changes favor intra-aneurysmal thrombus development.

    • Conclusions:

    • Endovascular stenting is an effective treatment strategy for aortic arch aneurysms with blebs.
    • Stenting attenuates aneurysm rupture risk by favorably altering hemodynamics.
    • Further research into stented aneurysm hemodynamics is warranted.