Dynamic behaviour of a dacron aortic graft

Eleonora Tubaldi, Giovanni Ferrari, Prabakaran Balasubramanian, Marco Amabili

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Woven Dacron grafts are still considered the clinical standard practice in thoracic vascular reconstruction in the case of aortic aneurysm and acute dissection. Despite its characteristics of biocompatibility and durability, very little is known about the dynamic response of Dacron grafts and about their side effects on the heart workload and cardiovascular system. In this study, physiological blood flow conditions are imposed in a Dacron graft via a specifically-developed mock circulatory loop. The effects of different physiological pulsation-per-minute rates are investigated. Since the Dacron prosthesis is extremely stiffer circumferentially and compliant axially with respect to an aortic segment of the same length, bending oscillations are preferred by the graft. This leads to a very significant different dynamic behavior with respect to the replaced human aortic portion altering cardiovascular pressure and blood flow dynamics and eventually causing long-term implant complications.

Original languageEnglish (US)
Title of host publicationBiomedical and Biotechnology Engineering
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791859407
DOIs
StatePublished - Jan 1 2019
EventASME 2019 International Mechanical Engineering Congress and Exposition, IMECE 2019 - Salt Lake City, United States
Duration: Nov 11 2019Nov 14 2019

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume3

Conference

ConferenceASME 2019 International Mechanical Engineering Congress and Exposition, IMECE 2019
CountryUnited States
CitySalt Lake City
Period11/11/1911/14/19

Keywords

  • Dynamics
  • Mock circulatory loop
  • Woven Dacron prosthesis

ASJC Scopus subject areas

  • Mechanical Engineering

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