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Ex Vivo and in Silico Study of Human Common Carotid Arteries Pressure Response in Physiological and Inverted State

Abstract

Arterial walls are a multilayer structures with nonlinear material characteristics. Furthermore, residual stresses exist in unloaded state (zero-pressure condition) and they affect arterial behavior. To investigate these phenomena a number of theoretical and numerical studies were performed, however no experimental validation was proposed and realized yet. We cannot get rid of residual stresses without damaging the arterial segment. In this paper we propose a novel experiment to validate a numerical model of artery with residual stresses. The inspiration for our study originates from experiments made by Dobrin on dogs’ arteries (1999). We applied the idea of turning the artery inside out. After such an operation the sequence of layer is reversed and the residual stresses are re-ordered. We performed several pressure-inflation tests on human Common Carotid Arteries (CCA) in normal and inverted configurations. The nonlinear responses of arterial behavior were obtained and compared to the numerical model. Computer simulations were carried out using the commercial software which applied the finite element method (FEM). Then, these results were discussed.

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Fabrication of Plga/Hap and Plga/Phb/Hap Fibrous Nanocomposite Materials for Osseous Tissue Regeneration

implant fixation: Mechanical and histological studies in dogs. Acta Orthopead. 64, 1-58 [15] Vallet-Regi, M., Gonzalez-Calbet, J.M., (2004). Calcium phosphates as substitution of bone tissues. Prog. Solid State Ch. 32, 1-31 [16] Illić, V., Šaponjić, Z., Vodnik, V., Potkonjak, B., Jovančić, P., Nedeljković, J., Radetić, M., (2009). The influence of silver content on antimicrobial activity and color of cotton fabrics functionalized with Ag nanoparticles. Carbohyd.Polym. 78, 564-569 [17] Yates, C.C., Whaley, D., Babu, R

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Segmental intracellular, interstitial, and intravascular volume changes during simulated hemorrhage and resuscitation: A case study

, Hansen S et al. (2003) Cardiovascularregulation in the period preceding vasovagal syncope inconscious humans. J Physiol. 549:299-311. https://doi.org/10.1113/jphysiol.2002.036715 10.1113/jphysiol.2002.036715 Julu PO Cooper VL Hansen S et al 2003 Cardiovascularregulation in the period preceding vasovagal syncope inconscious humans J Physiol 549 299 311 https://doi.org/10.1113/jphysiol.2002.036715 4 Vatner SF. (1974) Effects of hemorrhage on regional bloodflow distribution in dogs and primates. J Clin. Invest. 54:225- 235. https://doi.org/10

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Measurement of cerebral blood flow autoregulation with rheoencephalography: a comparative pig study

.1097/01.CCM.0000181732.37319.DF Muench E Bauhuf C Roth H Horn P Phillips M Marquetant N Quintel M Vajkoczy P Effects of positive end-expiratory pressure on regional cerebral blood flow, intracranial pressure, and brain tissue oxygenation Crit Care Med 2005 33 10 23672372 https://doi.org/10.1097/01.CCM.0000181732.37319.DF Pearce WJ, D'Alecy LG. Hemorrhage-induced cerebral vasoconstriction in dogs. Stroke. 1980;11(2):190-197. https://doi.org/10.1161/01.STR.11.2.190 10.1161/01.STR.11.2.190 6768171 Pearce WJ D'Alecy LG

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Impedance Ratio Method for Urine Conductivity-Invariant Estimation of Bladder Volume

] revealed a linear dependence of extracorporal impedance and bladder volume in dogs, which could be reproduced in humans [ 6 ]. Recently, both our group [ 7 ] and He et al. [ 8 ] presented the extension of the extracorporal bioimpedance approach to multi-electrode electrical impedance tomography measurements (EIT). It is expected that 3D multi-electrode measurements can help to reduce distorting influences and provide more accurate bladder volume estimates than a single tetrapolar measurement could do. One issue with extracorporal bioimpedance for bladder volume

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Impedance cardiography: Pulsatile blood flow and the biophysical and electrodynamic basis for the stroke volume equations

perfusing dogs. Med Biol Eng Comput 1976;14:373–8. 10.1007/BF02476113 Ito H Yamakoshi KI Yamada A Physiological and fluid-dynamic investigations of the transthoracic impedance plethysmography method for measuring cardiac output. Part II-Analysis of the transthoracic impedance wave by perfusing dogs Med Biol Eng Comput 1976 14 373 8 26 Yamakoshi KI, Ito H, Yamada A, et al. Physiological and fluid-dynamic investigations of the transthoracic impedance plethysmography method for measuring cardiac output: Part 1-A fluid-dynamic approach using an

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Studies in Rheoencephalography (REG)

ethyl apovincaminate on the cerebral circulation. Studies in patients with obliterative cerebral arterial disease Arzneimittelforschung 1976 26 1945 7 116 Imamoto T, Tanabe M, Shimamoto N, Kawazoe K, Hirata M. Cerebral circulatory and cardiac effects of vinpocetine and its metabolite, apovincaminic acid, in anesthetized dogs. Arzneimittelforschung. 1984;34:161-9. 6539108 Imamoto T Tanabe M Shimamoto N Kawazoe K Hirata M Cerebral circulatory and cardiac effects of vinpocetine and its metabolite, apovincaminic acid, in anesthetized dogs

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