EVALUATION OF THE EFFECTIVENESS OF A COMMERCIAL COOLING COLLAR IN REDUCING BODY TEMPERATURE DURING HEAT STRESS: THEORETICAL MODELING OF BODY TEMPERATURE DISTRIBUTION

Title	EVALUATION OF THE EFFECTIVENESS OF A COMMERCIAL COOLING COLLAR IN REDUCING BODY TEMPERATURE DURING HEAT STRESS: THEORETICAL MODELING OF BODY TEMPERATURE DISTRIBUTION
Author	Eginton, Michael Louis
Advisors	Zhu, Liang
Program	Engineering, Mechanical
UMBC Department	Mechanical Engineering
Document Type	thesis
Sponsors	University of Maryland, Baltimore County (UMBC)
Keywords	Engineering, Mechanical (0548); Engineering, General (0537)
Date Issued	2008-02-21; *
Abstract	Heat stroke results in an elevation of body temperature and neurological abnormalities which may lead to multiple-organ damage, permanent neurological damage, and even death. In order to effectively reduce the risk of permanent damage, one must rapidly decrease the body temperature. One method which shows potential and lacks in-depth research is the use of a cooling collar. To evaluate this method's effectiveness on cooling the body tissue, a three-dimensional vascular model of the neck and a two-dimensional continuum model of the body using the Pennes bioheat equation, were developed. The vascular model evaluated thermal interaction between the neck tissue and the embedded common carotid artery, vertebral artery, internal and external jugular veins, and cervical spine. The temperature decay along the major blood vessels varied between 0.1°C and 0.5°C when the cooling collar was 0°C at the neck skin surface. Depending on the cooling collar temperature, up to 37 W of heat was removed from the arterial and venous blood in the neck region. The calculated heat removal rate due to blood cooling in the neck and the temperature distribution at the interface between the neck and torso were then substituted into the Pennes bioheat equation (a continuum model) to assess the cooling rate of the body temperature. The results indicate the cooling collar has the potential to decrease the average volumetric body temperature by as much as 0.69°C/hour. The cooling collar's relatively small size and portable nature can provide critical and timely treatment before more complicated methods can be applied.
Identifier	1134
Format	application:pdf
Language	en
Collection	UMBC Theses and Dissertations
Rights Statement	This item may be protected under Title 17 of the U.S. Copyright Law. It is made available by UMBC for non-commercial research and education. For permission to publish or reproduce, please see http://aok.lib.umbc.edu/specoll/repro.php or contact Special Collections at speccoll(at)umbc.edu.

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EVALUATION OF THE EFFECTIVENESS OF A COMMERCIAL COOLING COLLAR IN REDUCING BODY TEMPERATURE DURING HEAT STRESS: THEORETICAL MODELING OF BODY TEMPERATURE DISTRIBUTION

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