Impact of different heart rates and arterial elastic moduli on pulse wave velocity in arterial system model

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The article describes the analysis of a pulse wave propagating through arteries towards periphery. For this analysis the model of arterial system based on the electromechanical analogy was used. Using the theory of transmission lines we estimated phase and group velocity of the arterial pulse wave. Both types of velocities were compared and dispersive properties of the selected arterial segments were evaluated. Pulse wave velocity corresponding to group velocity was calculated. We performed simulations for different heart rates and for different arterial elastic moduli. An increase in the heart rate causes that phase and group velocities converge to the same values. The higher magnitude of the arterial elastic module has the impact in the form of the increase in the both types of pulse wave velocities indicating the pathological state of the arterial system – arteriosclerosis.

Keywords:
arterial system, group velocity, modelling, phase velocity, pulse wave

Autoři: Stefan Borik; Ivo Cap
Působiště autorů: University of Zilina, FEE, Dept. of Electromagnetic and Biomedical Engineering, Zilina, Slovakia
Vyšlo v časopise: Lékař a technika - Clinician and Technology No. 4, 2014, 44, 25-27
Kategorie: Původní práce

Souhrn

Keywords:
arterial system, group velocity, modelling, phase velocity, pulse wave

Zdroje

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