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Separation of arterial pressure into solitary waves and windkessel flow

Abstract : A simplified model of arterial blood pressure intended for use in model-based signal processing applications is presented. The main idea is to decompose the pressure into two components: a travelling wave describes the fast propagation phenomena predominating during the systolic phase and a windkessel flow represents the slow phenomena during the diastolic phase. Instead of decomposing the blood pressure pulse into a linear superposition of forward and backward harmonic waves, as in the linear wave theory, a nonlinear superposition of travelling waves matched to a reduced physical model of the pressure, is proposed. Very satisfactory experimental results are obtained by using forward waves, the N- soliton solutions of a Korteweg-de Vries equation in conjunction with a two-element windkessel model. The parameter identifiability in the practically important 3- soliton case is also studied. The proposed approach is briefly compared with the linear one and its possible clinical relevance is discussed.
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https://hal.inria.fr/inria-00000914
Contributor : Taous-Meriem Laleg-Kirati <>
Submitted on : Thursday, March 30, 2006 - 3:10:12 PM
Last modification on : Wednesday, April 14, 2021 - 12:12:36 PM
Long-term archiving on: : Friday, November 25, 2016 - 10:25:41 AM

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  • HAL Id : inria-00000914, version 2

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Taous-Meriem Laleg, Emmanuelle Crépeau, Michel Sorine. Separation of arterial pressure into solitary waves and windkessel flow. MCBMS'06, Sep 2006, Reims, France. ⟨inria-00000914v2⟩

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