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Related Concept Videos

Methods of reducing fever01:22

Methods of reducing fever

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The signs and symptoms of fever include hot and dry skin, flushed face, thirst, muscle aches, anorexia, headache, tachycardia, tachypnea, and fatigue. Elevated body temperature is reduced using two methods: pharmacological and nonpharmacological. Proper identification and treatment of the root cause of a fever is of utmost importance.
Pharmacological Methods of Reducing Fever:
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Decreased Body Temperature01:29

Decreased Body Temperature

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A decreased body temperature can occur in patients with hypothermia and frostbite. Heat loss with extended cold exposure overpowers the body's ability to create heat, resulting in hypothermia. Core temperature readings help classify hypothermia. Mild hypothermia is temperatures between 32 °C (89.6 °F) and 35°C (95 °F) and is caused by impaired thermoregulation. Moderate hypothermia is temperatures between 28 C (82.4 °F) and 32 °C (89.6 °F) caused by...
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Mechanisms of Heat Transfer01:14

Mechanisms of Heat Transfer

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Heat transfer between the human body and its environment occurs through four main mechanisms: conduction, convection, radiation, and evaporation.
Conduction, accounting for approximately 3% of body heat loss at rest, is the process of exchanging heat between molecules of two materials in direct contact. This can result in both heat loss and gain. For instance, when the body is submerged in water, which conducts heat 20 times more effectively than air, it can either lose or gain significant...
2.0K
Mechanism of heat transfer01:19

Mechanism of heat transfer

2.2K
Understanding heat transfer mechanisms is essential for understanding how our bodies maintain balance in different environmental conditions. When the environment is thermoneutral, the body is in a state of balance, neither using nor releasing energy to maintain its core temperature. However, when the environment is not thermoneutral, the body employs four heat transfer mechanisms to maintain homeostasis: conduction, convection, evaporation, and radiation. These mechanisms facilitate heat...
2.2K
Increased Body Temperature01:25

Increased Body Temperature

7.6K
A body temperature above  38°C  (100.4 °F) is known as fever or pyrexia, and a person with fever is termed 'febrile.' Typically, the hypothalamus, a part of the brain that acts as the body's thermostat, regulates body temperature through a thermoregulatory setpoint. It receives signals from cold and warm thermal receptors throughout the body and adjusts the body's temperature accordingly. Fever occurs when this hypothalamic setpoint is altered, usually in...
7.6K
Homeostatic Imbalances in Body Temperature01:19

Homeostatic Imbalances in Body Temperature

4.4K
Hyperthermia occurs when the body's temperature becomes unusually high, often due to heat exposure, intense physical activity, or certain illnesses. This condition can create a dangerous cycle where elevated body temperature increases the metabolic rate, generating more heat and potentially leading to organ failure and brain damage. A severe form of hyperthermia, called heat stroke, can raise body temperature to life-threatening levels. Fever, on the other hand, is a controlled form of...
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Related Experiment Video

Updated: Mar 30, 2026

Esophageal Heat Transfer for Patient Temperature Control and Targeted Temperature Management
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Esophageal Heat Transfer for Patient Temperature Control and Targeted Temperature Management

Published on: November 21, 2017

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Cooling Methods in Heat Stroke.

Flavio G Gaudio1, Colin K Grissom2

  • 1Division of Emergency Medicine, New York Presbyterian Hospital - Weill Cornell Medical Center, New York, New York.

The Journal of Emergency Medicine
|November 4, 2015
PubMed
Summary
This summary is machine-generated.

Rapid cooling is crucial for heat stroke survival. Ice-water immersion is effective for exertional heat stroke, while evaporative cooling is preferred for nonexertional heat stroke.

Keywords:
conductive coolingevaporation and convection coolingexertional heat strokeheat stroke treatmentnonexertional heat stroke

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A Preclinical Model of Exertional Heat Stroke in Mice
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Area of Science:

  • Emergency Medicine
  • Environmental Health
  • Thermoregulation

Background:

  • Heat stroke presents a significant mortality risk, affecting both young and elderly individuals.
  • Over 3300 deaths in the U.S. (2006-2010) were linked to heat stroke.
  • Distinguishing between exertional and nonexertional heat stroke is vital for treatment.

Purpose of the Study:

  • To review and synthesize evidence on primary cooling techniques for heat stroke management.
  • To address the ongoing debate regarding optimal cooling methods in heat stroke patients.

Main Methods:

  • Review of existing literature and case series on heat stroke cooling therapies.
  • Analysis of cooling method efficacy in different heat stroke subtypes (exertional vs. nonexertional).

Main Results:

  • Ice-water immersion demonstrates high efficacy and zero fatality in exertional heat stroke cases.
  • Evaporative plus convective cooling is often favored for nonexertional heat stroke in the elderly.
  • Augmentation with ice packs or chilled IV fluids can supplement primary cooling methods.

Conclusions:

  • While rapid cooling is essential, optimal methods vary by heat stroke type.
  • Evidence from large clinical trials is limited; case series provide the best data.
  • Certain methods like ice packs to specific areas, cooling blankets, and external devices are not recommended as primary treatments.