Pressure Changes Induced by Whole Body Acceleration Shocks

[+] Author and Article Information
E. Belardinelli, M. Ursino, G. Fabbri

Department of Electronics, Computer Science and Systems, I-40136, Bologna, Italy

A. Cevese, F. Schena

Institute of Human Physiology, I-37134, Verona, Italy

J Biomech Eng 113(1), 27-29 (Feb 01, 1991) (3 pages) doi:10.1115/1.2894081 History: Received January 12, 1990; Revised November 02, 1990; Online March 17, 2008


In the present paper pressure changes induced by sudden body acceleration are studied “in vivo” on the dog and compared to the results obtainable with a recently developed mathematical model. A dog was fixed to a movable table, which was accelerated by a compressed air piston for less than 1 s. Acceleration was varied by changing the air pressure in the piston. Pressure was measured during the experiment at different points along the vascular bed. However, only data obtained in the carotid artery and abdominal aorta are presented here. The results demonstrated that impulse body accelerations cause significant pressure peaks in the vessel examined (about + 25 mmHg in the carotid artery with body acceleration of g/2). Moreover, pressure changes are rapidly damped, with a time constant of about 0.1s. From the present results it may be concluded that, according to the prediction of the mathematical model, body accelerations such as those occurring in normal life can induce pressure changes well beyond the normal pressure value.

Copyright © 1991 by The American Society of Mechanical Engineers
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