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Decreased Body Temperature

Decreased Body Temperature

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 sustained extreme cold exposure, and severe...

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:

Mechanism of heat transfer

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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...

Increased Body Temperature

Increased Body Temperature

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 response to an infection or illness.

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Masonry in Cold and Hot Weather Conditions

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In cold weather, masonry construction requires specific precautions to ensure mortar does not freeze before curing, as this can significantly weaken its strength and watertightness. Mortar temperature should be maintained between 60°F and 80°F to support proper hydration and curing. Below 40°F, mortar water must be heated, but should not exceed 120°F as high temperatures can reduce mortar's compressive and bond strength.
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Related Experiment Video

Updated: May 13, 2026

Esophageal Heat Transfer for Patient Temperature Control and Targeted Temperature Management

Esophageal Heat Transfer for Patient Temperature Control and Targeted Temperature Management

Published on: November 21, 2017

A touch of cooling may help.

Akram M Zaaqoq, Sachin Yende

Critical Care (London, England)

|March 9, 2013

Summary

External cooling to control fever in septic shock is safe and reduces vasopressor needs and early mortality. This intervention improved shock reversal and decreased day 14 mortality in patients requiring mechanical ventilation and sedation.

Area of Science:

Critical Care Medicine
Infectious Diseases
Cardiovascular Medicine

Background:

Fever control may improve vascular tone and decrease oxygen consumption in septic shock.
However, fever can also play a role in combating infection.

Purpose of the Study:

To determine if external cooling to achieve normothermia reduces vasopressor requirements in patients with septic shock.

Main Methods:

A multicenter randomized controlled trial involving 200 febrile patients with septic shock requiring vasopressors, mechanical ventilation, and sedation.
Patients were randomized to either external cooling to maintain normothermia (36.5-37.8°C) for 48 hours or no cooling.

Main Results:

External cooling did not significantly decrease the percentage of patients with a 50% vasopressor dose reduction at 48 hours (72% vs. 61%).

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However, cooling significantly reduced the need for vasopressor dose increases (34% vs. 52%) and increased shock reversal (86% vs. 73%).

Day 14 mortality was significantly lower in the cooling group (19% vs. 34%).

Conclusions:

Fever control using external cooling is a safe intervention for septic shock.
External cooling effectively decreases vasopressor requirements and reduces early mortality in septic shock patients.