IntroductionNormal Body Core Temperatures [1] [2] Show
Skin Temperature In contrast to the core temperature, the skin temperature (shell), falls and rises with the temperature of the surroundings. Issues of ConcernThermoregulatory Impairment [3] Hypothermia
Heat Illness Spectrum
CellularHeat Production [3] [4] [5] Heat production is a function of metabolism.
Heat Loss The rate at which heat is lost is determined almost entirely by:
DevelopmentBrown Fat
Organ Systems InvolvedAnterior Hypothalamic-Preoptic Area in Thermostatic Detection of Temperature
Posterior Hypothalamus Integrates the Peripheral and Central Temperature Sensory Signals
Detection of Temperature by Receptors in the Deep Body Tissues
Detection of Temperature by Receptors in the Skin
FunctionInsulator System of the Body [6] [7]
Blood Flow to the Skin from the Body Core Imparts Heat Transfer
Effect of the environmental temperature on heat conductance from the body core to the skin
Basic Physics the Loss of Heat from the Skin Surface Heat dissipated by radiation, evaporation, and conduction. Evaporation and conduction of the air are accelerated by convection. Evaporation Is a Necessary Cooling Mechanism at High Air Temperatures
Clothing Reduces Conductive and Convective Heat Loss
MechanismTemperature-Decreasing Mechanisms
Temperature-Increasing Mechanisms
Related TestingSetPoint for Temperature Control
Artificial Hypothermia
PathophysiologySweating and its Regulation by the Autonomic Nervous System
Mechanism of Sweat Secretion
Precursor Secretion
Reabsorption
Hypothalamic Stimulation of Shivering
Sympathetic "Chemical" Excitation of Heat Production
Clinical SignificanceHeat Stroke [3] [9]
Treatment for Heat Stroke [3] [9] After following the standard ATLS resuscitation protocol (airway, breathing, circulation), the next step is to cool the body to reduce core body temperature rapidly. Whole-body cooling units on-site should be utilized. As long as the patient is stable, the rapid cooling protocol takes priority even before starting transportation to the local emergency department. Review QuestionsReferences1.Heikens MJ, Gorbach AM, Eden HS, Savastano DM, Chen KY, Skarulis MC, Yanovski JA. Core body temperature in obesity. Am J Clin Nutr. 2011 May;93(5):963-7. [PMC free article: PMC3076651] [PubMed: 21367952] 2.Hoffmann ME, Rodriguez SM, Zeiss DM, Wachsberg KN, Kushner RF, Landsberg L, Linsenmeier RA. 24-h core temperature in obese and lean men and women. Obesity (Silver Spring). 2012 Aug;20(8):1585-90. [PubMed: 22240727] 3.Noonan B, Bancroft RW, Dines JS, Bedi A. Heat- and cold-induced injuries in athletes: evaluation and management. J Am Acad Orthop Surg. 2012 Dec;20(12):744-54. [PubMed: 23203934] 4.Kurz A. Physiology of thermoregulation. Best Pract Res Clin Anaesthesiol. 2008 Dec;22(4):627-44. [PubMed: 19137807] 5.Sallis R, Chassay CM. Recognizing and treating common cold-induced injury in outdoor sports. Med Sci Sports Exerc. 1999 Oct;31(10):1367-73. [PubMed: 10527306] 6.Keen ML, Miller KC, Zuhl MN. Thermoregulatory and Perceptual Effects of a Percooling Garment Worn Underneath an American Football Uniform. J Strength Cond Res. 2017 Nov;31(11):2983-2991. [PubMed: 28858055] 7.Cappaert TA, Stone JA, Castellani JW, Krause BA, Smith D, Stephens BA., National Athletic Trainers' Association. National Athletic Trainers' Association position statement: environmental cold injuries. J Athl Train. 2008 Oct-Dec;43(6):640-58. [PMC free article: PMC2582557] [PubMed: 19030143] 8.Ray S, Sharma S, Maheshwari A, Aneja S, Kumar A. Heat stroke in an infant with hypohidrotic ectodermal dysplasia: brain magnetic resonance imaging findings. J Child Neurol. 2013 Apr;28(4):538-40. [PubMed: 23358631] 9.American College of Sports Medicine. Armstrong LE, Casa DJ, Millard-Stafford M, Moran DS, Pyne SW, Roberts WO. American College of Sports Medicine position stand. Exertional heat illness during training and competition. Med Sci Sports Exerc. 2007 Mar;39(3):556-72. [PubMed: 17473783] 10.Howe AS, Boden BP. Heat-related illness in athletes. Am J Sports Med. 2007 Aug;35(8):1384-95. [PubMed: 17609528] What do you call to the excessive low body temperature characterized by?Hypothermia is a medical emergency that occurs when your body loses heat faster than it can produce heat, causing a dangerously low body temperature. Normal body temperature is around 98.6 F (37 C). Hypothermia (hi-poe-THUR-me-uh) occurs as your body temperature falls below 95 F (35 C).
What condition is characterized by the excessive rise in body temperature Brainly?Hyperthermia is an abnormally high body temperature — or overheating. It's the opposite of hypothermia, when your body is too cold.
What does mean hypothermia?What is hypothermia? Hypothermia is caused by prolonged exposures to very cold temperatures. When exposed to cold temperatures, your body begins to lose heat faster than it's produced. Lengthy exposures will eventually use up your body's stored energy, which leads to lower body temperature.
What temperature is hyperthermia?Hyperthermia is actually an umbrella term. It refers to several conditions that can occur when your body's heat-regulation system can't handle the heat in your environment. You're said to have severe hyperthermia if your body temperature is above 104°F (40°C).
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