Biomechanics of abdominal aortic aneurysm in the! presence of endoluminal thrombus: Experimental characterisation and structural static computational analysis

E. Di Martino, S. Mantero, F. Inzoli, G. Melissano, D. Astore, R. Chiesa, R. Fumero

Research output: Contribution to journalArticle

Abstract

Objectives: To evaluate the role played by biomechanical and geometrical parameters of endoluminal thrombus and of aortic wall on abdominal aortic aneurysm (AAA) behaviour. Materials and methods: Tensile tests on 21 AAA thrombus specimens from six patients undergoing AAA repair and numerical evaluation of aneurysmal aortic was stress and strain distribution. Parameters of the analysis were lumen eccentricity, thrombus Young's Modulus and the aortic wall constitute equation. Results: There was a linear stress/strain for all the thrombus specimens. The numerical analyses show the mechanical behaviour of AAA as a function of lumen eccentricity and biomechanical parameters. Conclusions: Well organised thrombus reduces the effect of the pressure load on the aneurysmal aortic wall.

Original languageEnglish
Pages (from-to)290-299
Number of pages10
JournalEuropean Journal of Vascular and Endovascular Surgery
Volume15
Issue number4
DOIs
Publication statusPublished - 1998

Keywords

  • Abdominal aortic aneurysm (AAA)
  • Aneurysm mathematical model
  • Endoluminal thrombus
  • Thrombus mechanical properties

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Radiology Nuclear Medicine and imaging
  • Surgery

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