Abstract
The input impedance of the aorta is a measure of the extent to which the arterial system opposes the ejection of blood by the left ventricle, and the same is true for the pulmonary artery and right ventricle. Arterial impedance, therefore, represents the load on the heart [4] and influences the ventricles in two ways: by affecting ventricular work and by determining the relationships between pressure and flow. The input impedance of an artery is calculated experimentally from the frequency components of observed pressure and flow waves and is expressed as a complex frequency spectrum.
The experimental work reported here was a collaborative effort of Drs. C.R. Conti, W.W. Nichols, P. Sipkema, W.E. Walker, and W.R. Milnor.
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References
McDonald, D.A.: Blood Flow in Arteries. 2nd edition, London: Arnold 1974
Milnor, W.R., Bergel, D.H., Bargainer, J.D.: Hydraulic power associated with pulmonary blood flow and its relation to heart rate. Circ. Res. 19, 467–480 (1966)
Milnor, W.R., Conti, CR., Lewis, K.B., O’Rourke, M.R.: Pulmonary arterial pulse wave velocity and impedance in man. Circ. Res. 25, 637–649 (1969)
Milnor, W.R.: Arterial impedance as ventricular afterload. Circ. Res. 36, 565–570 (1975)
Nichols, W.W., Conti, CR., Walker, W.E., Milnor, W.R.: Input impedance of the systemic circulation in man. Circ. Res. 40, 451–458 (1977)
Walker, W.E.: The influence of changes of aortic input impedance on the dynamics of left ventricular performance. Ph.D. Dissertation, Johns Hopkins University 1975
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© 1978 Springer-Verlag Berlin Heidelberg
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Milnor, W.R. (1978). Influence of Arterial Impedance on Ventricular Function. In: Bauer, R.D., Busse, R. (eds) The Arterial System. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-67020-6_20
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DOI: https://doi.org/10.1007/978-3-642-67020-6_20
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-08897-4
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