Title: The concept of Vascular Impedance revisited

Authors: Alberto Jose Kohen, Nikola Krouchkov, Max E. Valentinuzzi

Addresses: Facultad de Ingenieria (FI), Instituto de Ingenieria Biomedica (IIBM), Universidad de Buenos Aires (UBA), Av. Paseo Colon 850, (1063) City of Buenos Aires, C1063ACV, Argentina. ' Facultad de Ingenieria (FI), Instituto de Ingenieria Biomedica (IIBM), Universidad de Buenos Aires (UBA), Av. Paseo Colon 850, (1063) City of Buenos Aires, C1063ACV, Argentina. ' Facultad de Ingenieria (FI), Instituto de Ingenieria Biomedica (IIBM), Universidad de Buenos Aires (UBA), Av. Paseo Colon 850, (1063) City of Buenos Aires, C1063ACV, Argentina

Abstract: The concept of Vascular Impedance (VI) comes from Electrical Engineering, where the ratio of two sinusoidal waves define the impediment opposed by a circuit to the passage of current. VI instead starts with two complex temporal waves (blood pressure and flow), from which their simple harmonics are separated out to produce a number of impedance moduli and angles. Electrical engineers often react with doubt; this is experienced in lectures to that audience. The objective herein, addressed to potential disbelievers, is to revisit and mathematically sustain the VI concept. A second objective recalls its potentialities.

Keywords: aortic impedance; blood flow; blood pressure; convolution; discrete methods; Fourier expansion; vascular impedance.

DOI: 10.1504/IJBET.2011.041125

International Journal of Biomedical Engineering and Technology, 2011 Vol.6 No.2, pp.208 - 215

Received: 08 May 2021
Accepted: 12 May 2021

Published online: 09 Jul 2011 *

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