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Related Concept Videos

Body Temperature01:25

Body Temperature

3.7K
The body's temperature, measured in degrees, is determined by the balance between heat production and dissipation to the surrounding environment. For instance, if exercising vigorously, the body will produce more heat, causing sweat and dissipating that heat. Despite extreme environmental conditions and physical exertion, the human temperature-control system maintains a constant core body temperature (the temperature of deep tissues, which are the tissues located beneath the skin and other...
3.7K
Body Temperature01:07

Body Temperature

1.8K
Body temperature reflects the equilibrium between heat production and heat loss within the body. Most heat is generated by metabolically active tissues, particularly the liver, heart, brain, kidneys, and endocrine organs. At rest, skeletal muscles contribute 20–30% of total heat production, but during vigorous exercise, this can increase up to 30–40 times.
The average body temperature is approximately 37°C (98.6°F) and typically ranges from 36.1–37.2°C...
1.8K
Assessing Body Temperature - Oral01:14

Assessing Body Temperature - Oral

2.0K
Here are the steps to accurately measure oral temperature using an electronic thermometer:
Step 1:
Start by practicing proper hand hygiene to prevent the spread of microorganisms.
Step 2:
Take the thermometer out of the charging unit, switch it on, and wait for the ready sign.
Step 3:
Gently slide the probe cover until a click is heard. This simple action prevents cross-contamination and ensures the correct placement of the probe cover.
Step 4:
Instruct the patient to open their mouth and place...
2.0K
Assessing Body Temperature - Rectal01:27

Assessing Body Temperature - Rectal

16.4K
Rectal temperature measurement is considered the most precise method for assessing core body temperature and typically registers higher than oral temperature. For adults, the rectal thermometer should be inserted 1 to 1.5 inches into the rectum to obtain the most accurate reading.
Follow these steps for rectal temperature assessment:
Step 1: Perform hand hygiene and don clean gloves to prevent cross-infection.
Step 2: Position the patient in a side-lying position to better visualize the rectal...
16.4K
Assessing Body Temperature - Temporal Artery01:19

Assessing Body Temperature - Temporal Artery

1.6K
Here is a stepwise guide to assessing the body temperature at the temporal artery using a temporal artery thermometer
Step 1: Perform hand hygiene and don a fresh pair of gloves to prevent cross-infection and ensure patient safety.
Step 2: Explain the procedure to the patient to establish trust. Clear communication establishes trust with the patient, ensures they understand what to expect, promotes cooperation, and enhances comfort during the procedure.  
Step 3: Assess the patient's...
1.6K
Equipments Used to Measure Body Temperature01:13

Equipments Used to Measure Body Temperature

2.1K
Body temperature can be assessed using various devices and measured in Celsius or Fahrenheit.
Glass-bulb Thermometer:
Glass-bulb thermometers are hollow glass tubes with a bulb tip containing liquid such as ethanol or mercury. Historically, glass bulb mercury thermometers were the standard device to measure body temperature. Today, mercury thermometers are prohibited in many countries due to the hazardous effects of mercury and the risk of exposure if the glass bulb breaks. In general,...
2.1K

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Related Experiment Video

Updated: Apr 27, 2026

Establishment of a Novel Ex Vivo Lung Perfusion System for Rat Lungs After Circulatory Death
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Establishment of a Novel Ex Vivo Lung Perfusion System for Rat Lungs After Circulatory Death

Published on: October 18, 2024

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Core body temperature control by total liquid ventilation using a virtual lung temperature sensor.

Mathieu Nadeau, Philippe Micheau, Raymond Robert

    IEEE Transactions on Bio-Medical Engineering
    |June 25, 2014
    PubMed
    Summary
    This summary is machine-generated.

    Total liquid ventilation (TLV) uses a virtual lung temperature sensor to accurately estimate core body temperature. This enables precise, rapid control of body temperature, comparable to extracorporeal circulation.

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    Area of Science:

    • Biomedical Engineering
    • Physiology
    • Respiratory Medicine

    Background:

    • Total liquid ventilation (TLV) involves filling lungs with perfluorocarbon (PFC) liquid for gas exchange.
    • The lungs act as a heat exchanger during TLV, causing rapid core body temperature fluctuations.
    • Accurate core body temperature monitoring and control are essential during TLV.

    Purpose of the Study:

    • Design and validate a virtual lung temperature sensor for noninvasive core temperature estimation.
    • Utilize the virtual sensor to achieve rapid and automatic core body temperature control during TLV.
    • Compare the speed of TLV-based temperature control with extracorporeal circulation.

    Main Methods:

    • Developed a virtual lung temperature sensor using expired PFC measurements.
    • Validated the virtual sensor in vitro and in vivo using newborn lambs.
    • Implemented a feedback controller with the Inolivent-5.0 liquid ventilator to modulate inspired PFC temperature.
    • Monitored core body temperatures using multiple invasive and noninvasive sensors in lambs.

    Main Results:

    • The virtual lung temperature sensor accurately estimated systemic arterial temperature.
    • TLV enabled precise and rapid control of core body temperature in lambs.
    • The speed of temperature control achieved with TLV was comparable to extracorporeal circulation.

    Conclusions:

    • A virtual lung temperature sensor provides a reliable method for noninvasive temperature monitoring during TLV.
    • Total liquid ventilation offers effective and rapid core body temperature regulation.
    • TLV presents a promising alternative to extracorporeal circulation for temperature management.