Effects of Transmural Pressure and Muscular Activity on Pulse Waves in Arteries

Propagation of small amplitude harmonic waves through a viscous incompressible fluid contained in an initially stressed elastic cylindrical tube is considered as a model of the pulse wave propagation in arteries. The nonlinearity and orthotropy of the vascular material is taken into account. Muscula...

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Bibliographic Details
Published in:Journal of biomechanical engineering 1980-05, Vol.102 (2), p.119-123
Main Author: Rachev, A. I.
Format: Article
Language:English
Subjects:
Aorta, Abdominal - physiology
Arteries - physiology
Blood Circulation
Elasticity
Humans
Models, Cardiovascular
Muscle, Smooth - physiology
Muscles - physiology
Pressure
Stress, Mechanical
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Summary:Propagation of small amplitude harmonic waves through a viscous incompressible fluid contained in an initially stressed elastic cylindrical tube is considered as a model of the pulse wave propagation in arteries. The nonlinearity and orthotropy of the vascular material is taken into account. Muscular activity is introduced by means of an “active” tension in circumferential direction of the vessel. The frequency equation is obtained and it is solved numerically for the parameters of a human abdominal aorta. Conclusions concerning pressure-dependence, age-dependence, and muscular activation-dependence of the wave characteristics are drawn which are in accord with available experimental data.
ISSN:0148-0731
1528-8951
DOI:10.1115/1.3138207