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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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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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Frost Action on Concrete01:27

Frost Action on Concrete

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Concrete structures in cold climates, such as those along roadsides, can retain moisture. This moisture makes them susceptible to frost-related damage when temperatures fall below freezing. Adding moisture worsens the damage during temperature fluctuations, leading to repeated freezing and thawing. De-icing salts, spread over these structures to melt ice, add to the freeze-thaw cycle, and draw even more moisture into the concrete.
This freeze-thaw cycle primarily causes surface scaling, where...
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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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Masonry in Cold and Hot Weather Conditions01:21

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.
Other key practices include keeping masonry units...
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Cold Weather Concreting01:27

Cold Weather Concreting

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When freshly poured concrete is exposed to freezing temperatures before it has set, the water within the concrete can freeze. This expansion disrupts the setting process, delays chemical reactions necessary for hardening, and increases the volume of pores within the hardened concrete, which weakens its overall structure. If the concrete manages to reach an appreciable strength before it freezes, the damage can be somewhat mitigated.
To counteract the negative impacts of cold weather, ensuring...
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Warning: Tourniquets Risk Frostbite in Cold Weather.

John F Kragh, Daniel K O'Conor

    Journal of Special Operations Medicine : a Peer Reviewed Journal for SOF Medical Professionals
    |February 28, 2023
    PubMed
    Summary
    This summary is machine-generated.

    Tourniquet use in cold environments increases frostbite risk by reducing blood flow and hindering natural vasodilation. Medical professionals should be aware of this association when treating casualties in freezing conditions.

    Keywords:
    bleeding control and preventioncomplicationfirst aidfreezing cold injuryprehospital carewounds and injuries

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    Area of Science:

    • Emergency Medicine
    • Environmental Health
    • Trauma Surgery

    Background:

    • Future conflicts may occur in extreme cold, increasing the relevance of frostbite risk with tourniquet use.
    • Historically, tourniquet use in cold has been associated with severe frostbite, potentially leading to amputation.

    Purpose of the Study:

    • To investigate the association between first-aid tourniquet application and frostbite risk.
    • To review existing information on tourniquet use and cold injury.

    Main Methods:

    • Literature review of historical cases, animal experiments, and human studies.
    • Analysis of physiological responses to cold exposure and tourniquet application.

    Main Results:

    • Tourniquet use was found to increase frostbite development in animal models.
    • Human studies support an association between tourniquet use and frostbite.
    • Reduced blood flow from tourniquets may exacerbate cold injury by limiting tissue perfusion and preventing cold-induced vasodilation.

    Conclusions:

    • An association exists between tourniquet use and frostbite, though not direct cause and effect.
    • Tourniquet use can accelerate limb cooling in cold environments, heightening frostbite risk.
    • Medical providers are cautioned about the increased risk of frostbite when using tourniquets in temperatures below 0°C (32°F).