A New Method for Monitoring Deep Body Temperature from the Skin Surface

1973 ◽  
Vol 44 (1) ◽  
pp. 81-86 ◽  
Author(s):  
R. H. Fox ◽  
A. J. Solman ◽  
R. Isaacs ◽  
A. J. Fry ◽  
I. C. MacDonald
Keyword(s):  
Body Temperature ◽  
Heat Flow ◽  
Skin Surface ◽  
The Body ◽  
Deep Body Temperature ◽  
New Device ◽  
Body Shell ◽  
Electronic Thermometer ◽  
A New Technique ◽  
Deep Body

1. A new technique for monitoring the deep body temperature is described. The technique depends on creating a zone of zero heat-flow across the body shell; this brings the deep body temperature to the skin surface where it is measured with a simple electronic thermometer. 2. The new device gives a temperature closely comparable with other methods for measuring the deep body temperature in the resting subject, and is simple to use and socially acceptable.

scholarly journals The Effects of Hyperbaric Exposure on Immediate and Delayed Changes in Core Temperature and Its Circadian Fluctuations

2017 ◽  
Vol 60 (3) ◽  
pp. 19-25
Author(s):  
Sławomir Kujawski ◽  
Joanna Słomko ◽  
Monika Zawadka-Kunikowska ◽  
Mariusz Kozakiewicz ◽  
Jacek J. Klawe ◽  
...  
Keyword(s):  
Body Temperature ◽  
Core Temperature ◽  
Core Body Temperature ◽  
The Body ◽  
Physiological Adaptation ◽  
Deep Body Temperature ◽  
Delayed Effects ◽  
Hyperbaric Exposure ◽  
Core Body ◽  
Deep Body

Abstract Changes observed in the core body temperature of divers are the result of a multifaceted response from the body to the change of the external environment. In response to repeated activities, there may be a chronic, physiological adaptation of the body’s response system. This is observed in the physiology of experienced divers while diving. The purpose of this study is to determine the immediate and delayed effects of hyperbaric exposure on core temperature, as well as its circadian changes in a group of three experienced divers. During compression at 30 and 60 meters, deep body temperature values tended to increase. Subsequently, deep body temperature values showed a tendency to decrease during decompression. All differences in core temperature values obtained by the group of divers at individual time points in this study were not statistically significant.

scholarly journals Assessment of body surface temperature in cetaceans: an iterative approach

2004 ◽  
Vol 64 (3b) ◽  
pp. 719-724 ◽  
Author(s):  
R. G. Silva
Keyword(s):  
Heat Transfer ◽  
Body Temperature ◽  
Surface Temperature ◽  
Marine Mammals ◽  
Skin Surface ◽  
Iterative Approach ◽  
Ambient Water ◽  
Deep Body Temperature ◽  
Body Surface Temperature ◽  
Deep Body

Heat transfer from skin surface to ambient water is probably the most important aspect of thermal balance in marine mammals, but the respective calculations depend on knowing the surface temperature (T S), the direct measurement of which in free animals is very difficult. An indirect iterative method is proposed for T S prediction in free cetaceans from deep body temperature, swimming speed, and temperature and thermodynamic properties of the water.

Hypothermia and its attempted control in newborn piglets

1990 ◽  
Vol 1990 ◽  
pp. 81-81
Author(s):  
R J Pattison ◽  
P R English ◽  
O MacPherson ◽  
J A Roden ◽  
M Birnie
Keyword(s):  
Body Temperature ◽  
The Body ◽  
Commercial Unit ◽  
Deep Body Temperature ◽  
Digital Thermometer ◽  
Newborn Piglets ◽  
Temperature Trends ◽  
Climatic Environment ◽  
Deep Body ◽  
Body Heat

The newborn piglet is prone to hypothermia because of the body heat which is lost in evaporating birth fluids from its surface and because the climatic environment provided for the piglet at birth can be sub-optimal. If deep body temperature drops by over 2°C from the norm of 39° C the pig suffers from reduced locomotor vigour and becomes, more lethargic (Stephens, 1971). Such disadvantages can make the piglet less effective in competing for a teat and colostrum and also more prone to be overlain by the dam (English and Morrison, 1983). Because of the possible consequences of hypothermia, therefore, there is a need to quantify piglet body temperature trends from birth in the variable conditions provided for farrowing and to develop improved approaches for reducing the problem.Studies in newborn piglets were conducted on a large commercial unit in which farrowing took place in pens with solid floored front creeps with underfloor heating, while the remainder of the pen floor was of woven wire. Mean temperatures (4 cm above floor level) in the front creep and the remainder of the pen were 22.6°C and 21.4°C respectively. Rectal temperature (at a depth of 4 cm) was recorded using a hand held digital thermometer in 168 piglets in 17 litters at 10 minute intervals in the first hour of life, at hourly intervals thereafter up to 10 hours and also at hourly intervals from 24 to 36 hours of age.

scholarly journals Changes of Body Temperature and Heat in Cardiac Surgical Patients

1985 ◽  
Vol 13 (1) ◽  
pp. 12-17 ◽  
Author(s):  
Colin A. Shanks ◽  
Leonard D. Wade ◽  
Ronald Meyer ◽  
Carolyn J. Wilkinson
Keyword(s):  
Body Temperature ◽  
Pulmonary Artery ◽  
Metabolic Rate ◽  
Subcutaneous Fat ◽  
Skin Surface ◽  
Exponential Relationship ◽  
Vasodilator Therapy ◽  
Deep Body Temperature ◽  
Skin Temperatures ◽  
Deep Body

Changes in body temperature were assessed in ten adult patients undergoing surgery involving cardiopulmonary bypass (CPB) and induced hypothermia. Intraoperatively, in comparable time intervals before CPB and after rewarming, the patients lost body heat. Between the time of induction of anaesthesia and CPB, the temperature of blood in the pulmonary artery fell 1.46 (SD 0.28°C); between CPB and the end of surgery the fall was 1.55 (SD 0.86°C). The extent of spontaneous hypothermia did not correlate with the amount of subcutaneous fat. Hypothermia was induced to obtain a stable deep body temperature of 27.2 (SD 1.3)°C, when mean skin temperature averaged 2°C higher. The CPB machine returned approximately 2000 kJ of heat in the rewarming period, to produce pulmonary artery and mean skin temperatures of 37.1 (SD 0.7)°C and 31.4 (SD 2.1)°C respectively. Intraoperative deep body temperatures demonstrated the expected exponential relationship with metabolic rate. Postoperatively, increase in metabolic rate was associated with rising deep body and skin temperatures. Low resistance to the flow of heat toward the skin surface was demonstrated by low postoperative values for thermal insulation, which may indicate good peripheral perfusion seen during continuing vasodilator therapy.

Thermal control of metabolic cold defence in pigeons columba livia

1998 ◽  
Vol 201 (6) ◽  
pp. 793-803 ◽  
Author(s):  
J E Østnes ◽  
C Bech
Keyword(s):  
Body Temperature ◽  
Skin Temperature ◽  
Cold Exposure ◽  
Columba Livia ◽  
The Body ◽  
Cold Sensitivity ◽  
Minor Importance ◽  
Circadian Cycle ◽  
Deep Body Temperature ◽  
Deep Body

Metabolic rate (MR) and various body temperatures were recorded in pigeons Columba livia during gradual lowering of the ambient temperature (Ta) and during cold exposure (-10 degrees C) for an entire circadian cycle. The aim was to study how changes in MR accorded with the observed body temperature displacements and our knowledge of regional cold sensitivity. When Ta was lowered from 28 to -10 degrees C, the threefold increase in MR was accompanied by a significant increase in deep-body and spinal cord temperatures. Cold exposure also resulted in a distinct rise in breast skin temperature, whereas the skin temperatures of the neck, back and leg decreased significantly. Thus, during acute cold exposure of pigeons, peripheral thermosensors seem to have the primary effect in mediating metabolic cold defence, while internal thermosensors are apparently of minor importance. By using differential weightings of various skin areas, cold-sensitivity values of between -3.9 and -14. 7 W kg-1 degrees C-1 were estimated. These values indicate a much higher skin thermosensitivity of birds than has been previously suggested. When cold-exposed for an entire circadian cycle, the pigeons usually maintained a low leg skin temperature. However, during these experiments, the pigeons showed regular distinct increases in leg skin temperature, obviously due to cold-induced vasodilatations (CIVDs). The flushing of cold peripheral blood through the body in connection with these CIVDs resulted in a decrease in deep-body temperature (Tb), to which the pigeons responded with a distinct increase in MR. From the concomitant changes in MR and Tb, a total body cold sensitivity of -8.0 W kg-1 degrees C-1 was calculated, a value that is close to the previously published cold-sensitivity value of pigeons. This shows that, at least under some naturally occurring conditions, internal thermosensors will provide a significant error signal in the control of metabolic cold defence. Furthermore, the results of our study show that the relative importance of various thermosensitive sites in the control of metabolic cold defence is contextual.

Evaluation of a newly developed monitor of deep body temperature

2002 ◽  
Vol 16 (4) ◽  
pp. 354-357 ◽  
Author(s):  
Michiaki Yamakage ◽  
Sohshi Iwasaki ◽  
Akiyoshi Namiki
Keyword(s):  
Body Temperature ◽  
Deep Body Temperature ◽  
Deep Body

Circadian rhythm abnormalities of deep body temperature in depressive disorders

1992 ◽  
Vol 26 (3) ◽  
pp. 191-198 ◽  
Author(s):  
Kazushi Daimon ◽  
Naoto Yamada ◽  
Tetsushi Tsujimoto ◽  
Saburo Takahashi
Keyword(s):  
Circadian Rhythm ◽  
Body Temperature ◽  
Depressive Disorders ◽  
Deep Body Temperature ◽  
Deep Body
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