Abdominal Aortic Aneurysm (AAA) is a dilation of the aorta of at least 50% increase in diameter, or an aortic diameter over 3 cm. If left untreated, an AAA will increase in size until rupture of the aortic wall causes a life threatening hemorrhage . The current criterion for a repair procedure is a maximum diameter of the AAA of at least 5.5 cm. However, the diameter is not adequate for some small AAAs that rupture early . Therefore, multiple studies have focused on and published data on patient-specific wall stress analyses. Fillinger et al. (2002) found higher peak wall stresses in ruptured AAAs than in electively repaired AAAs .
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99 Percentile Wall Stress and Not Peak Stress Correlates With AAA Diameter
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Speelman, L, Bosboom, EMH, Hellenthal, FAMVI, Schurink, GWH, Jacobs, MJHM, & van de Vosse, FN. "99 Percentile Wall Stress and Not Peak Stress Correlates With AAA Diameter." Proceedings of the ASME 2008 Summer Bioengineering Conference. ASME 2008 Summer Bioengineering Conference, Parts A and B. Marco Island, Florida, USA. June 25–29, 2008. pp. 199-200. ASME. https://doi.org/10.1115/SBC2008-191986
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