Key result
Arterial pre-stretch enhances blood pressure pulse propagation in mathematical modeling.
Why the study?
The influence of initial stretch on wave propagation in thin-walled liquid-filled arteries was not fully understood.
Wave propagation through a thin-walled cylindrical orthotropic viscoelastic initially stressed tube filled with a Newtonian fluid is discussed. Special attention is drawn to the influence of the initial stretch on the wave propagation. It is shown that initial stretching of real arteries enhances the propagation of blood pressure pulses in mammalian arteries. The dispersion equation for the initial-value problem of a semi-infinite tube is also derived. It is shown that the speed of propagation and the attenuation vary with the distance from the support. The results obtained for the axial wave mode provide an explanation for the experimental observations, which is not possible with the results obtained for the infinite tube.
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Gerard D. C. Kuiken (1984) studied this question. Initial stretching was evaluated on Wave propagation speed and attenuation. Initial stretching of a mathematical model of mammalian arteries enhances the propagation of blood pressure pulses, with speed and attenuation varying with distance from the support.
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