Manual pressure distension of the human saphenous vein changes its biomechanical properties—implication for coronary artery bypass grafting

Zhao, Jingbo; Andreasen, Jan Jesper; Yang, Jimin; Rasmussen, Bodil Steen; Liao, Donghua

doi:10.1016/j.jbiomech.2006.10.014

Cited by 31 publications

(27 citation statements)

References 37 publications

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“…Our results of the opening angle simulations showed that we should anticipate value higher than 01. However, one can find higher values in observations of Zhao et al (2007). It is clear that the uniform stress or strain hypothesis for saphenous veins should be addressed in future research and proven experimentally.…”

Section: Discussionmentioning

confidence: 91%

“…Artery rings cut radially spring open to release these stresses; this is the socalled opening angle method (Chuong and Fung, 1986;Rachev and Greenwald, 2002;Holzapfel et al, 2000). Zhao et al (2007) examined the biomechanical properties of human saphenous veins at supra-physiologic pressures using the distension experiment and were able to measure the zero-stress state of vein tissue by radially cutting open their specimens. They observed the residual opening angle around 1201.…”

Section: Discussionmentioning

confidence: 99%

“…In contrast to the work done on arteries, there have been only a few papers describing the multi-axial mechanical response of veins within the framework of nonlinear elasticity (Desch and Weizsäcker, 2007;Cacho et al, 2007;McGilvray et al, 2010;Sokolis, 2013;Zhao et al, 2007). Probably, the most comprehensive study of mechanical properties of saphenous veins has been provided by Donovan et al (1990).…”

Section: Introductionmentioning

confidence: 99%

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Constitutive modeling of human saphenous veins at overloading pressures

Vesely¹,

Horny²,

Chlup³

et al. 2015

Journal of the Mechanical Behavior of Biomedical Materials

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In the present study, inflation tests with free axial extension of 15 human vena saphena magna were conducted ex vivo to obtain data suitable for multi-axial constitutive modeling at overloading conditions (pressures up to approximately 15kPa). Subsequently the data were fitted with a hyperelastic, nonlinear and anisotropic constitutive model based on the theory of the closed thick-walled tube. It was observed that initial highly deformable behavior (up to approximately 2.5kPa) in the pressure-circumferential stretch response is followed by progressive large strain stiffening. Contrary to that, samples were much stiffer in longitudinal direction, where the observed stretches were in the range 0.98-1.03 during the entire pressurization in most cases. The effect of possible residual stress was evaluated in a simulation of the intramural stress distribution with the opening angle prescribed to 0°, 10°, 20°, 30°, 40°, and 50°. The result suggests that the optimal opening angle making the stress distribution through the wall thickness uniform is about 40°. The material parameters presented here are suitable for use in mechanobiological simulations describing the adaptation of the autologous vein wall after bypass surgery.

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Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Constitutive modeling of human saphenous veins at overloading pressures

Vesely¹,

Horny²,

Chlup³

et al. 2015

Journal of the Mechanical Behavior of Biomedical Materials

View full text Add to dashboard Cite

show abstract

“…Using these techniques, it is not necessary to cut open blood vessels for testing, and Helm (2008) has recently shown that cylindrical vessel segments can be subjected to physiological pressures, and the resulting deformations used to determine the elastomechanical properties. This method is an extremely attractive option for investigating the pressure dependence of vessel properties, which has been demonstrated by Stooker et al (2003), and Zhao et al (2007), among others, and which was not evaluated in the current work.…”

Section: Resultsmentioning

confidence: 99%

Elastomechanical properties of bovine veins

Rossmann¹

2010

Journal of the Mechanical Behavior of Biomedical Materials

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“…For this one requires to develop a constitutive relation for these veins [1,2]. These constitutive relations would help determine how the graft material has to be handled by the surgeons so that the vein does not get damaged [3]. Because of these needs mechanical tests on GSV has been performed [3][4][5][6][7] but to the knowledge of the authors a constitutive relation for the same has not been reported.…”

Section: Introductionmentioning

confidence: 99%

Mechanical Properties of Human Saphenous Vein

Paranjothi

Saravanan

Krishnakumar

et al. 2011

Conference Proceedings of the Society for Experimental Mechanics Series

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Details about custom built experimental set up to perform inflation tests at constant length on blood vessels are presented. Using this displacement controlled set up we can apply and measure pressures up to 100 kPa and axial loads ranging up to 100 N. The surface deformation is determined from tracking twelve markers in 3D space using 2 CCD cameras. Discarded vein tissue from patients undergoing Coronary bypass surgery were collected and stored at 4 o C in normal saline and experiments were completed within 24 hours from harvest. Inflation tests at different axial stretch ratios on saphenous vein were conducted. Results show that the deformation of the vein is not axially symmetric. These suggest that the vein is inhomogeneous and/or residually stressed not only in the radial direction, but also in the circumferential and/or axial direction. The loading and unloading path is not different, suggesting that the vein is being subjected to non-dissipative process. Checking for the incompressibility condition, results show that the vein is compressible. These results have implications in the development of constitutive models for the vein.

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Manual pressure distension of the human saphenous vein changes its biomechanical properties—implication for coronary artery bypass grafting

Cited by 31 publications

References 37 publications

Constitutive modeling of human saphenous veins at overloading pressures

Constitutive modeling of human saphenous veins at overloading pressures

Elastomechanical properties of bovine veins

Mechanical Properties of Human Saphenous Vein

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