Analysis of blood pressure wave in the human common carotid artery on the basis of non-invasive ultrasonic examinations
Abstract
The aim of the study was the examination of the forward and reflected blood pressure waves in the common carotid artery on the basis of non-invasive ultrasonic examinations. The study concerned the effect of stenosis of the internal carotid artery caused by atherosclerosis on the mean reflection coefficient modulus and the time delay between the reflected blood pressure wave and the forward blood pressure wave. The investigations were carried out on a group of healthy persons (30 cases) and on a group of sick persons (17 cases) with stenosis or occlusion of the internal carotid artery.Keywords:
forward and reflected blood pressure waves, vascular input impedance, common carotid artery, ultrasoundReferences
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[2] D.H. Bergel, The dynamic elastic properties of the arterial wall, J. Physiol., 156, 458–469 (1961).
[3] J.C. Bramwell and A.V. Hill, The velocity of the pulse wave in man, Proc. Roy. Soc. London, s. B, 93, 298–306 (1922).
[4] J.M. De Bray and B. Glatt, Quantification of atheromatous stenosis in the extracranial internal carotid artery, Cerebrovasc Dis., 5, 414–426 (1995).
[5] U. Gessner, Vascular input impedance, [in:] Cardiovascular Fluid Dynamics, D.H. Bergel [Ed.], Academic Press, London and New York, vol. 1, chapter 10, 315–349 (1972).
[6] B.S. Gow, D. Schonfeld and D.J. Patel, The dynamic elastic properties of canine left circumflex coronary artery, J. Biomechanics, 7, 389–395 (1974).
[7] B.S. Gow and C.D. Hadfield, The elasticity of canine and human coronary arteries with reference to postmortem changes, Circ. Res., 45, 588–594 (1979).
[8] B.M. Learoyd and M.G. Taylor, Alterations with age in the viscoelastic properties of human arterial walls, Circ. Res., 18, 278–292 (1966).
[9] D.A. McDonald, Blood flow in arteries, E. Arnold Ltd., London 1960.
[10] T. Powałowski and B. Pensko, A noninvasive ultrasonic method for the elasticity evaluation of the carotid arteries and its application in the diagnosis of the cerebro-vascular system, Archives of Acoustics, 13, 1-2, 109–126 (1988).
