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Related Concept Videos

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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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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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.
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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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Thermoregulation01:26

Thermoregulation

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The human body has a sophisticated thermoregulation system that employs negative feedback mechanisms to maintain an optimal core temperature. When the core temperature drops, peripheral and central thermoreceptors send signals to the hypothalamus, activating the heat-promoting center. This center triggers several responses aimed at increasing the core temperature. First, vasoconstriction reduces the flow of warm blood from internal organs to the skin so that the heat is not lost from the skin,...
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Esophageal Heat Transfer for Patient Temperature Control and Targeted Temperature Management
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Hypothermia in the Combat Trauma Population.

Steven G Schauer1,2,3, Michael D April3,4, Andrew D Fisher5,6

  • 1U.S. Army Institute of Surgical Research, JBSA Fort Sam Houston, Texas, USA.

Prehospital Emergency Care
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Hypothermia in combat trauma patients is linked to worse survival. Current prehospital warming methods appear inadequate, with intubation increasing hypothermia risk.

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Area of Science:

  • Trauma Care
  • Military Medicine
  • Physiology

Background:

  • Hypothermia is a critical complication in major trauma, associated with coagulopathy and reduced survival.
  • The MARCH algorithm includes hypothermia prevention, but its effectiveness in combat settings needs evaluation.
  • Defining hypothermia based on outcomes is crucial for understanding its impact in military casualties.

Purpose of the Study:

  • To define hypothermia in combat trauma casualties using an outcomes-based approach.
  • To identify clinical variables associated with hypothermia in this population.
  • To assess the effectiveness of current prehospital warming interventions.

Main Methods:

  • Secondary analysis of the Department of Defense Trauma Registry data.
  • Utilized receiver operating characteristic (ROC) curve and Youden's index to define hypothermia based on mortality risk.
  • Employed multivariable regression modeling to identify associated clinical variables and intervention effectiveness.

Main Results:

  • Identified an optimal hypothermia threshold of 36.2°C, with 14% of casualties falling below this.
  • Hypothermia was associated with significantly lower survival to discharge (91% vs. 98%).
  • Prehospital intubation and blood product administration were associated with hypothermia; warming interventions showed no association with reduced risk.

Conclusions:

  • Hypothermia in combat trauma is associated with adverse outcomes.
  • Prehospital intubation is strongly linked to hypothermia development.
  • Current prehospital warming strategies appear insufficient to mitigate hypothermia risk.