Affiliation:
1. Section on Clinical Biophysics, Cardiology Branch, National Heart Institute, National Institutes of Health Bethesda, Maryland 20014
Abstract
Static anisotropic elasticity was studied in the middle descending thoracic aorta of 14 living dogs. Special transducers were used to measure radius and longitudinal stress at several pressures in situ in an isolated vessel segment. From these data, moduli describing elastic properties of the vessel wall were calculated. Results indicate that (1) at a physiologic pressure of 154 cm H
2
O (extension ratio of 1.52 circumferentially) the mean values for the incremental elastic moduli in the radial, circumferential, and longitudinal directions were 5480, 7510, and 10,100 g/cm
2
, respectively; (2) these moduli increased with an increase in intravascular pressure; and (3) the longitudinal modulus decreased when the vessel was studied in vitro (from the removal of longitudinal tethering).
Publisher
Ovid Technologies (Wolters Kluwer Health)
Subject
Cardiology and Cardiovascular Medicine,Physiology
Reference24 articles.
1. FRY D. L.: Certain chemo-rheologic considerations regarding the blood vascular interface with particular reference to coronary artery disease. Circulation 40 (suppl. IV): IV-38 1969.
2. TICKNER E. G. AND SACKS A. H.: Theoretical and Experimental Study of the Elastic Behavior of the Human Brachial and other Human and Canine Arteries. Vidya Rep. No. 162 1964.
3. The Elastic Symmetry of Arterial Segments in Dogs
4. LEE J. S. FRASHER W. C JR. AND FUNG Y. C. B.: Two-dimensional finite-deformation experiments on dog's arteries and veins. Rep. No. AFOSR 67-1980 Bioengineering Univ. Calif. San Diego Aug. 1967.
5. CAREW T. E. VAISHNAV R. N. AND PATEL D. J.: Compressibility of the arterial Circulation Res. 23: 61 1968.
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