Abstract
Insertion of a stent-graft into an aneurysm, especially abdominal aortic aneurysms (AAAs), is a very attractive surgical intervention; however, it is not without major postoperative complications, such as endoleaks. An endoleak is the transient accumulation of blood in the AAA cavity, which is formed by the stent-graft and AAA walls. Of the four blood pathways, a type I endoleak constitutes the major one. Thus, focusing on both proximal and distal type I endoleaks, i.e., the minute net influx of blood past the attachment points of a stent-graft into the AAA cavity, the transient three-dimensional interactions between luminal blood flow stent-graft wall, leakage flow, and AAA wall are computationally simulated. For different type I endoleak scenarios and inlet pressure wave forms, the impact of type I endoleaks on cavity pressure, wall stress, and stent-graft migration force is analyzed. The results indicate that both proximal type I-a and distal type I-b endoleaks may cause cavity pressures close to a patient's systemic pressure; however, with reduced pulsatility. As a result, the AAA-wall stress is elevated up to the level of a nonstented AAA and, hence, such endoleaks render the implant useless in protecting the AAA from poss...Continue Reading
References
Feb 7, 2001·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·J AlbertiniB R Hopkinson
Apr 18, 2000·Journal of Biomechanics·M L Raghavan, D A Vorp
Sep 30, 2000·Journal of Vascular Surgery·O C VelazquezR M Fairman
Feb 24, 2001·Annals of Biomedical Engineering·M S OlufsenJ Larsen
May 22, 2001·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·I V MohanUNKNOWN EUROSTAR COLLABORATORS
Jun 21, 2001·Annals of Vascular Surgery·M J ThubrikarF Robicsek
Jul 20, 2001·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·J N AlbertiniB R Hopkinson
Nov 9, 2001·Journal of Vascular Surgery·J C ParodiM L Schermerhorn
Jul 20, 2002·Journal of Biomechanics·D Lee, J Y Chen
Mar 29, 2003·Journal of Vascular Surgery·Manish MehtaR Clement Darling
Jun 24, 2003·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·G ParlaniP Cao
Oct 16, 2003·Journal of Vascular Surgery·Arno TeutelinkJan D Blankensteijn
Nov 7, 2003·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·S M VolodosPeter Bell
Dec 5, 2003·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·M GawendaJ Brunkwall
Feb 26, 2004·Journal of Vascular Surgery·W Anthony LeeThomas S Huber
May 29, 2004·Journal of Biomechanics·L MorrisT McGloughlin
Jun 12, 2004·Journal of Vascular Surgery·Nuno V DiasBjörn Sonesson
Sep 8, 2004·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·A ChaudhuriM Adiseshiah
Sep 8, 2004·Lancet·R M GreenhalghUNKNOWN EVAR trial participants
Nov 9, 2004·European Journal of Vascular and Endovascular Surgery : the Official Journal of the European Society for Vascular Surgery·J A S BrookesC C R Bishop
Dec 16, 2004·Annals of Vascular Surgery·Sergio M SampaioPeter Gloviczki
May 3, 2005·Medical Engineering & Physics·Zhonghua Li, Clement Kleinstreuer
Aug 27, 2005·Journal of Biomechanical Engineering·Z Li, C Kleinstreuer
Nov 5, 2005·Biomechanics and Modeling in Mechanobiology·Z LiM Farber
Sep 19, 2006·Journal of Medical Engineering & Technology·Z Li, C Kleinstreuer
Mar 17, 2007·Annual Review of Biomedical Engineering·C KleinstreuerM A Farber
Citations
Mar 18, 2009·Cardiovascular and Interventional Radiology·Zhonghua Sun, Thanapong Chaichana
May 23, 2006·Biomedical Engineering Online·James H LeungYun Xu
Oct 8, 2009·Biomedical Engineering Online·David S MolonyTim M McGloughlin
Aug 6, 2008·Medical & Biological Engineering & Computing·Kerem PekkanAjit P Yoganathan
Jan 1, 2009·The British Journal of Radiology·P R Hoskins, D Hardman
Apr 2, 2013·Journal of Vascular Surgery·Andrew EnglandRichard G McWilliams
Nov 28, 2006·Journal of Biomechanics·Hai Yao, Wei Yong Gu
Dec 21, 2012·International Journal for Numerical Methods in Biomedical Engineering·Florian StefanovLiam Morris
Oct 14, 2005·Journal of Biomechanics·Z Li, C Kleinstreuer
Jul 28, 2015·Journal of Vascular Surgery·Andrew EnglandUNKNOWN Collaborators
Sep 30, 2014·Journal of Biomechanics·Peng ZhangXiaoyan Deng
Feb 18, 2011·Journal of Vascular Surgery·Ali F AburahmaJoseph Habib
Aug 30, 2008·Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists·Timothy J CorbettTim M McGloughlin
Jul 1, 2009·Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists·Michael M M D Lawrence-BrownDavid B Hartley
Jul 5, 2011·Journal of Biomechanics·Xiaohong Wang, Xiaoyang Li
Sep 24, 2016·Computational and Mathematical Methods in Medicine·Yueh-Hsun LuChia-Yuan Chen
Oct 25, 2016·Medical Engineering & Physics·Florian StefanovLiam Morris
Feb 22, 2012·Vascular and Endovascular Surgery·Efstratios GeorgakarakosChristos V Ioannou
Mar 30, 2011·Vascular and Endovascular Surgery·Albeir Y MousaAli F Aburahma
Nov 26, 2009·Annals of Biomedical Engineering·Jacopo BiasettiFausto Labruto
Apr 28, 2011·Journal of Endovascular Therapy : an Official Journal of the International Society of Endovascular Specialists·Efstratios GeorgakarakosAsterios N Katsamouris
Mar 13, 2009·Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine·K H FraserP R Hoskins