An Experimental and Theoretical Investigation of Hypothermia in Dogs

[+] Author and Article Information
G. W. Mauck, C. R. Smith, F. P. Incropera

School of Mechanical Engineering, Purdue University, West Lafayette, Ind.

W. E. Weirich

Department of Small Animal Clinics, School of Veterinary Medicine, Purdue University, West Lafayette, Ind.

J Biomech Eng 99(4), 195-202 (Nov 01, 1977) (8 pages) doi:10.1115/1.3426290 History: Received July 05, 1977; Online October 21, 2010


A technique for post surgical rewarming from clinical hypothermia, which utilizes a thoracic flush with heated saline solution, has been investigated experimentally and theoretically. The rewarming technique was used in conjunction with surface cooling for eighteen separate experiments using mongrel dogs, with the thermal response of the animals determined from thermocouple measurements at twelve strategic locations. Utilizing these measurements, temperature histories were established for the animals, from which representative cooling and rewarming rates have been determined. The rectal temperature was found to provide a suitable clinical reference temperature for monitoring the level of hypothermia, and the rewarming rates (from 10 to 22° C/hr) compare favorably with those obtained by other investigators using surface and extracorporeal rewarming methods. Reasonable agreement was obtained between the measured temperature histories and theoretical predictions obtained using a simple lumped parameter heat transfer model.

Copyright © 1977 by ASME
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