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Dissection Properties of Aneurysmal and Nonaneurysmal Human Ascending Thoracic Aorta: Preliminary Results

[+] Author Affiliations
Salvatore Pasta

University of Pittsburgh, Pittsburgh, PARiMED Foundation, Palermo, Italy

Julie A. Philippi, Thomas G. Gleason, David A. Vorp

University of Pittsburgh, Pittsburgh, PA

Paper No. SBC2010-19520, pp. 9-10; 2 pages
doi:10.1115/SBC2010-19520
From:
  • ASME 2010 Summer Bioengineering Conference
  • ASME 2010 Summer Bioengineering Conference, Parts A and B
  • Naples, Florida, USA, June 16–19, 2010
  • Conference Sponsors: Bioengineering Division
  • ISBN: 978-0-7918-4403-8
  • Copyright © 2010 by ASME

abstract

Ascending thoracic aortic aneurysm (ATAA) is among the most devastating forms of cardiovascular disease, causing a significant mortality despite current medical and surgical treatments [1]. Moreover these therapies themselves are associated with great risk of mortality or morbidity, complicated by the advanced age of the typical patient, and high surgical costs. The mechanics of spontaneous aortic dissection is not fully understood. It is generally believed that aortic dissection initiates as an intimal tear in which a separation of wall layers produces the formation of a ‘false’ lumen. The dissection may propagate axially and/or circumferentially due to blood flow and pressure. Dissection may lead to several possible complications. For example, the septum between the false lumen and true lumen may fracture, resulting in embolism and ischemic damage. Another possibility is that the thinned and weakened residual outer aortic wall may fail, resulting in rapid blood loss and tamponade.

Copyright © 2010 by ASME

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