Hemodynamical aspects of endovascular repair for aortic arch aneurisms

Asaph Nardi, Idit Avrahami, Moshe Halak, Daniel Silverberg, Moshe Brand

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


The presented study is focused on the hemodynamics aspects of thoracic aortic aneurysm and approaches for restoring hemodynamics in the aortic arch. The study includes numerical investigation of the aortic arch hemodynamics of a healthy aorta, aorta with aneurysm, and of two endovascular repairing procedures. The first endovascular repair approach is the total aortic arch hybrid debranching. The second implantation uses chimney graft technique. The analysis includes the fluid dynamics in the aorta and branching arteries under time-dependent physiological conditions. The results show the effect of aneurysm on blood flow in the descending aorta and in aortic arch side branches. In the aneurysmatic case, the aneurysm provokes a highly disturbed flow and large recirculation regions, especially during diastole. Out of the two endovascular techniques, the hybrid procedure was found preferred from hemodynamics point of view, with less disturbed and recirculating regions. Although the chimney procedure requires less manufacturing times and cost, it is associated with higher risks rate, and therefore, it is recommended only for emergency cases. This study may shade light on the hemodynamic factors for these complications, and provide insights on ways to improve the procedure.

Original languageEnglish
Title of host publication13th Mediterranean Conference on Medical and Biological Engineering and Computing 2013 - MEDICON 2013
Place of PublicationCopenhagen
Number of pages4
VolumeVolume 1
ISBN (Electronic) 978-079184583-7, 0791845834
StatePublished - 25 Jul 2014
EventASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis, ESDA 2014 - Copenhagen, Denmark
Duration: 25 Jul 201427 Jul 2014

Publication series

NameIFMBE Proceedings
ISSN (Print)1680-0737


ConferenceASME 2014 12th Biennial Conference on Engineering Systems Design and Analysis, ESDA 2014


  • Aortic arch aneurism
  • CFD
  • Chimney vs. hybrid techniques
  • Endovascular repair
  • Aortic arch
  • Hybrid procedure
  • Hybrid techniques
  • Numerical investigations
  • Physiological condition
  • Recirculation regions
  • Repairing procedures
  • Blood vessels
  • Chimneys
  • Arches
  • Computational fluid dynamics
  • Hemodynamics
  • Repair


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