Regional differences in vein wall dynamics under arterial hemodynamic conditions: comparison with arteries

Artificial Organs
Yanina ZócaloR Armentano

Abstract

Factors that explain the different results among veins, and causes of the superior performance of vein grafts for small arterial reconstructions, remain unclear. The aim was to compare the biomechanical behavior of veins and arteries from different regions and sizes under arterial conditions. In vitro pressure and diameter were measured in four different veins and three different ovine arteries. A diameter-pressure transfer function was designed, and compliance, viscous, and inertial indexes, and viscous energy and buffering function were calculated. Regional differences in vein mechanical behavior and energy dissipation were found. Veins and arteries vary in mechanical properties and buffering, but the differences were lesser when considering the smallest artery. The differences among veins' viscosity, compliance, and energy dissipation, but not in the buffering capability, could be related to different performances of veins when used as arterial grafts. The major biomechanical matching could contribute to explain veins with better results in small arteries reconstruction.

References

Jan 1, 1990·Journal of Biomechanics·S A BerceliH S Borovetz
Oct 8, 1999·Journal of Vascular Surgery·T R Kohler, T R Kirkman
Dec 4, 2001·Critical Reviews in Biomedical Engineering·F H SilverD J Foran
Sep 16, 2003·Annals of Biomedical Engineering·Frederick H SilverDavid J Foran
Oct 19, 2004·Journal of Applied Physiology·Daniel Bia SantanaRicardo Luis Armentano

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Citations

Mar 9, 2007·Artificial Organs·Paul S Malchesky
Apr 1, 2010·Circulation Journal : Official Journal of the Japanese Circulation Society·Edmundo Cabrera FischerRicardo Armentano
Jan 24, 2012·The Journal of Vascular Access·Efstratios I GeorgakarakosMiltos K Lazarides
Jun 6, 2015·The Journal of Vascular Access·Peter Balaz, Martin Björck
Dec 24, 2008·Physiological Measurement·Maria GuerrisiNicola Toschi
Jan 22, 2008·ASAIO Journal : a Peer-reviewed Journal of the American Society for Artificial Internal Organs·Edmundo I Cabrera FischerRicardo L Armentano
Jul 3, 2007·American Journal of Physiology. Heart and Circulatory Physiology·Wei ZhangGhassan S Kassab

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