caa a22 4500 465783791 CHVBK 20180323112002.0 cr unu---uuuuu 170327e19900901xx s 000 0 eng 10.1007/BF02441970 doi (NATIONALLICENCE)springer-10.1007/BF02441970 Theoretical model for assessing haemodynamics in arterial networks which include bypass grafts [Elektronische Daten] [M. Helai, K. Watts, A. Marble, S. Sarwal] The paper presents a theoretical model which can be used to simulate a vascular network which includes loops and bypass grafts, a feature not possible with previous models. Using the linearised Navier-Stokes equations, the linearised equation of a uniform thick-walled viscoelastic tube, and the equation of continuity, the model is applied to a vascular network which includes a bypass graft. This method represents each segment of an artery or graft by a four-terminal-network whose A, B, C, D parameters are functions of the frequency and physical characteristics of the segment. The model predicts the flow and pressure waveforms at any point in the human arterial network very accurately when compared with data obtained from normal patients, patients with arterial stenoses and for hypertensive patients. The model also gives results which are in close agreement with hydraulic experimental data for the input impedance of systems with bypass loops. IFMBE, 1990 Arterial model nationallicence Bypass graft nationallicence Network analysis nationallicence Transfer function nationallicence Vascular impedance nationallicence Wave propagation nationallicence Helai M. Department of Mechanical Engineering, Technical University of Nova Scotia, PO Box 1000, B3J 2X4, Halifax, Nova Scotia, Canada aut Watts K. Department of Mechanical Engineering, Technical University of Nova Scotia, PO Box 1000, B3J 2X4, Halifax, Nova Scotia, Canada aut Marble A. Department of Electrical Engineering, Technical University of Nova Scotia, PO Box 1000, B3J 2X4, Halifax, Nova Scotia, Canada aut Sarwal S. Department of Applied Mathematics, Technical University of Nova Scotia, PO Box 1000, B3J 2X4, Halifax, Nova Scotia, Canada aut Medical and Biological Engineering and Computing Kluwer Academic Publishers 28/5(1990-09-01), 465-473 0140-0118 28:5<465 1990 28 11517 https://doi.org/10.1007/BF02441970 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02441970 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Helai M. Department of Mechanical Engineering, Technical University of Nova Scotia, PO Box 1000, B3J 2X4, Halifax, Nova Scotia, Canada aut NATIONALLICENCE 700 1- Watts K. Department of Mechanical Engineering, Technical University of Nova Scotia, PO Box 1000, B3J 2X4, Halifax, Nova Scotia, Canada aut NATIONALLICENCE 700 1- Marble A. Department of Electrical Engineering, Technical University of Nova Scotia, PO Box 1000, B3J 2X4, Halifax, Nova Scotia, Canada aut NATIONALLICENCE 700 1- Sarwal S. Department of Applied Mathematics, Technical University of Nova Scotia, PO Box 1000, B3J 2X4, Halifax, Nova Scotia, Canada aut NATIONALLICENCE 773 0- Medical and Biological Engineering and Computing Kluwer Academic Publishers 28/5(1990-09-01), 465-473 0140-0118 28:5<465 1990 28 11517 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer