Accession Number : ADB160699

Title :   Noninvasive Measurement of Core Temperature. Phase 1.

Descriptive Note : Final rept. 15 Aug 88-15 Feb 89,

Corporate Author : TOPICAL TESTING INC SALT LAKE CITY UT

Personal Author(s) : Fisher, John H.

Report Date : 23 FEB 1989

Pagination or Media Count : 45

Abstract : Topical Testing proposes the development of a noninvasive device to monitor core temperature by sampling the maximal temperature of the respiratory air during expiration. Phase I development used a fast rise-time thermocouple to monitor the temperature of the expired air of an anesthetized animal model and investigate which parameters most greatly affect the expired air temperature at various stages of hypothermia. The Phase I goal of testing a working prototype has been achieved in which the critical parameters that influence the expired air temperature have been determined and controlled such that under most experimental conditions the error in estimation of core temperature is less than 1 C over a range of hypothermic temperatures. The Phase II goal will be development of a portable unit suitable to measure core temperature under field conditions. The proposed system will enhance the ability of the military to operate in low temperature environments by being able to monitor whether their troops are becoming hypothermic. It will be able to monitor temperature quickly in a noninvasive manner without the removal of clothing.

Descriptors :   *TEMPERATURE, AIR, ANESTHESIA, ANIMALS, ATMOSPHERIC TEMPERATURE, CLOTHING, CORES, ENVIRONMENTS, ESTIMATES, FIELD CONDITIONS, HYPOTHERMIA, LOW TEMPERATURE, MEASUREMENT, MODELS, PARAMETERS, PORTABLE EQUIPMENT, PROTOTYPES, REMOVAL, RESPIRATORY SYSTEM, SAMPLING.

Subject Categories : Medicine and Medical Research

Distribution Statement : APPROVED FOR PUBLIC RELEASE