Simulations of the blood flow in the arterio-venous fistula for haemodialysis

• Autorzy: Jodko D. , Obidowski D. , Reorowicz P. , Jóźwik K.

Identyfikatory

DOI

10.5277/abb140109

• Języki publikacji: EN

Abstrakty

EN

The Ciminio-Brescia arterio-venous fistula is a preferred vascular access for haemodialysis, but it is often associated with the development of vascular complications, due to changes in hemodynamic conditions. Computational fluid dynamics methods were involved to carry out seven simulations of the blood flow through the fistula for the patient specific (geometrical) case and various boundary conditions. The geometrical data, obtained from the angio-computed tomography, were used to create a 3-dimensional CAD model of the fistula. The blood flow patterns, blood velocity and the wall shear stress, thought to play a key role in the development of typical complications (stenoses, thromboses, aneurysms, etc.), have been analyzed in this study. The blood flow is reversed locally downstream the anastomosis (where the artery is connected to the vein) and downstream the stenosis in the cannulated vein. Blood velocity reaches abnormal value in the anastomosis during the systolic phase of the cardiac cycle (2.66 m/s). The wall shear stress changes in this place during a single cycle of the heart operation from 27.9 to 71.3 Pa (average 41.5 Pa). The results are compared with data found in the literature.

Słowa kluczowe

EN

a-v fistula; blood flow; computational fluid dynamics CFD; vascular access

PL

przepływ krwi; numeryczna mechanika płynów; hemodializa

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Acta of Bioengineering and Biomechanics
• Rocznik: 2014
• Tom: Vol. 16, no. 1
• Strony: 69--74
• Opis fizyczny: Bibliogr. 8 poz., rys., wykr.

Twórcy

autor

Jodko D.

• Łódź University of Technology, Institute of Turbomachinery, Łódź, Poland

autor

Obidowski D.

• Łódź University of Technology, Institute of Turbomachinery, Łódź, Poland

autor

Reorowicz P.

• Łódź University of Technology, Institute of Turbomachinery, Łódź, Poland

autor

Jóźwik K.

• Łódź University of Technology, Institute of Turbomachinery, Łódź, Poland

Bibliografia

• [1] SIVANESAN S., HOW T.V., BLACK R.A., BAKRAN A., Flow patterns in the radiocephalic arteriovenous fistula: an in vitro study, J. Biomech., 1999, Vol. 32, 915–925.
• [2] WIESE P., NONNAST-DANIEL B., Colour Doppler ultrasound in dialysis access, Nephrol. Dial. Transplant., 2004, Vol. 19, 1956–1963.
• [3] NIEMANN A.K., UDESEN J., THRYSOE S., Can sites prone to flow induced vascular complications in a-v fistulas be assessed using computational fluid dynamics?, J. Biomech., 2010, Vol. 43, 2002–2009.
• [4] JÓŹWIK K., OBIDOWSKI D., Numerical simulations of the blood flow through vertebral arteries, J. Biomech., 2010, Vol. 43, 177–185.
• [5] JODKO D., Simulation of the blood flow in the fistula for haemodialysis, Łódź University of Technology, Master Thesis (in Polish), 2011.
• [6] BOCHENEK A., REICHER M., Human Anatomy, Vol. III, Warsaw, PZWL, 1974.
• [7] JOHNSTON B.M., JOHNSTON P.R., CORNEY S., KILPATRICK D., Non-Newtonian blood flow in human right coronary arteries: steady state simulations, J. Biomech., 2004, Vol. 37, 709–720.
• [8] SHIN S., DO-YOUNG KEUM, Measurement of blood viscosity using mass-detecting sensor, J. Biomech., 2002, Vol. 17, 383–388.