Viscoelastic properties of the autologous bypass grafts: A comparative study among the small saphenous vein and internal thoracic artery

Arezoo Khosravi; Milad Salimi Bani; Hossein Bahreinizad; Alireza Karimi

doi:10.1016/j.artres.2017.06.007

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Volume 19, Issue C, September 2017, Pages 65 - 71

Viscoelastic properties of the autologous bypass grafts: A comparative study among the small saphenous vein and internal thoracic artery

Authors

Arezoo Khosravi^a, Milad Salimi Bani^b^{, *}, Hossein Bahreinizad^c, Alireza Karimi^d

^aAtherosclerosis Research Center, Baqiyatallah University of Medical Science, Tehran 15897, Iran

^bSchool of Mechanical Engineering, Iran University of Science and Technology, Tehran 16887, Iran

^cMechanical Engineering Department, Sahand University of Technology, Tabriz, Iran

^dDepartment of Mechanical Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan

^*Corresponding author. School of Mechanical Engineering, Iran University of Science and Technology, Tehran 16887, Iran. E-mail address: miladsalimibani@gmail.com (M. Salimi Bani).

Corresponding Author

Milad Salimi Bani

Received 25 April 2017, Revised 6 June 2017, Accepted 9 June 2017, Available Online 22 July 2017.

DOI: 10.1016/j.artres.2017.06.007 How to use a DOI?
Keywords: Small saphenous vein; Internal thoracic artery; Dynamic mechanical analysis; Viscoelastic properties; Bypass grafts
Abstract: Internal thoracic artery (ITA) and small saphenous vein (SSV) are two viable conduits for coronary artery bypass grafts. The aim of this study was to investigate the viscoelastic behavior of the small saphenous vein and internal thoracic artery under compressive and tensile loadings at body temperature. The dynamic mechanical analysis was used to measure the viscoelastic properties of the ITA and SSV at both the desired temperature and load frequency range. Storage modulus, loss modulus as well as phase angle of both the blood vessels were measured at the temperature of 37 ± 1 °C and under a sinusoidal load with the frequency range of 1–2 Hz. The mean storage and loss modulus of the SSV were both higher than that of the ITA. Furthermore, the SSV showed a higher stiffness and internal friction compared to those values under the tensile load. While ITA was stiffer under the tensile load, no considerable difference was observed among the compressive and tensile loss modulus. A more intense viscous behavior was observed under the radial direction. The results also revealed that the SSV has much higher stiffness whereas less viscous behavior compared to the ITA, especially in the radial direction. The results may have implications not only for understanding of the viscoelastic time-dependent mechanical behavior of the ITA and SSV but also for tissue engineering applications to make scaffolds according to the real time-dependent viscoelastic mechanical properties of these arteries and veins.
Open Access: This is an open access article distributed under the CC BY-NC license.

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Journal: Artery Research
Volume-Issue: 19 - C
Pages: 65 - 71
Publication Date: 2017/07/22
ISSN (Online): 1876-4401
ISSN (Print): 1872-9312
DOI: 10.1016/j.artres.2017.06.007 How to use a DOI?
Open Access: This is an open access article distributed under the CC BY-NC license.

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ris enw bib

TY  - JOUR
AU  - Arezoo Khosravi
AU  - Milad Salimi Bani
AU  - Hossein Bahreinizad
AU  - Alireza Karimi
PY  - 2017
DA  - 2017/07/22
TI  - Viscoelastic properties of the autologous bypass grafts: A comparative study among the small saphenous vein and internal thoracic artery
JO  - Artery Research
SP  - 65
EP  - 71
VL  - 19
IS  - C
SN  - 1876-4401
UR  - https://doi.org/10.1016/j.artres.2017.06.007
DO  - 10.1016/j.artres.2017.06.007
ID  - Khosravi2017
ER  -

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