Direct In-Vivo Measurements of the Elastic Properties of Canine Trachea

[+] Author and Article Information
D. C. Winter

Physiological Fluid Mechanics Laboratory, Department of Mechanical Engineering, University of Houston, Houston, Tex. 77004

R. L. Pimmel

Department of Electrical Engineering, University of Missouri, Columbia, Mo. 65211

B. F. Lewis

Division of Pulmonary Diseases, Department of Medicine, University of North Carolina, Chapel Hill, N.C. 27514

J Biomech Eng 104(4), 311-313 (Nov 01, 1982) (3 pages) doi:10.1115/1.3138364 History: Received October 12, 1981; Revised June 08, 1982; Online June 15, 2009


The specific compliance of the tracheas of seven anesthetized dogs were measured in vivo under control conditions and with the cervical vagi cut and then stimulated. Specific compliances ranged from 7.9 to 12.2 × 10−6 (dynes/cm2 )−1 for the control measurements and were not significantly different after vagotomy. Stimulation of the vagi reduced the compliance of the trachea by 40–70 percent. These results agree with other reported in-vivo results but the specific compliance values are noticeably less than the values reported for excised trachea.

Copyright © 1982 by ASME
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