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Related Concept Videos

Homeostatic Imbalances in Body Temperature01:19

Homeostatic Imbalances in Body Temperature

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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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Increased Body Temperature01:25

Increased Body Temperature

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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...
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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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Factors Affecting Body Temperature01:28

Factors Affecting Body Temperature

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As a nurse, it is vital to understand the factors affecting body temperature to monitor variations and effectively evaluate deviations from regular.
Factors may  include:
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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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Requirements for Human Life01:26

Requirements for Human Life

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The Earth and its atmosphere have provided humans with air, water, and food, but these are not the only requirements for survival. Humans also require a specific range of temperature and pressure that the Earth and its atmosphere provides.
Oxygen
Atmospheric air is only about 20 percent oxygen, but that oxygen is a key component of the chemical reactions that keep the body alive, including the reactions that produce ATP. Brain cells are susceptible to a lack of oxygen because they require a...
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A Preclinical Model of Exertional Heat Stroke in Mice
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How Blackouts during Heat Waves Amplify Mortality and Morbidity Risk.

Brian Stone1, Carina J Gronlund2,3, Evan Mallen1

  • 1School of City & Regional Planning, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.

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Extreme heat and electrical grid failures together more than double heat-related deaths. This highlights the urgent need for grid resilience and urban cooling strategies like tree canopy to protect public health.

Keywords:
climate changecompound climatextreme heat eventheat-related mortalityinfrastructure failureinfrastructure failure eventsurban heat management

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Area of Science:

  • Environmental science
  • Public health
  • Urban planning

Background:

  • Extreme heat events and electrical grid failures are increasing.
  • These events compound risks to population health during extreme weather.

Purpose of the Study:

  • To assess how concurrent electrical grid failures during heat waves affect heat-related mortality and morbidity.
  • To estimate personal-level heat exposure changes accounting for indoor and outdoor environments.

Main Methods:

  • Combined simulated heat exposure data from historical heat waves in three U.S. cities.
  • Developed a novel method for estimating hourly, individually experienced temperatures.
  • Accounted for both outdoor and indoor building exposures.

Main Results:

  • Concurrent grid failures during heat waves more than doubled estimated heat-related mortality.
  • Medical attention was required for 3% (Atlanta) to over 50% (Phoenix) of urban populations.
  • Impacts were observed across present and future time periods.

Conclusions:

  • Enhanced electrical grid resilience is crucial for mitigating heat-related health impacts.
  • Increased tree canopy and high albedo roofing can reduce heat exposure during compound events.
  • Proactive urban planning is essential for climate adaptation and infrastructure failure preparedness.