Core Body Temperature Measurement
Core Body Temperature Measurement - Related Videos
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Surgical Implantation of Temperature Telemetric Monitoring System in Mouse Model: A Surgical Procedure to Implant Temperature Telemetric Device to Measure Mouse Core Body Temperature
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In this video, we describe a surgical procedure to implant a temperature telemetric device in a mouse model to continuously measure its core body temperature.
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Equipments Used to Measure Body Temperature
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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,...
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Implantation of Radiotelemetry Transmitters Yielding Data on ECG, Heart Rate, Core Body Temperature and Activity in Free-moving Laboratory Mice
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Cited by 56 •
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A surgical technique for implantation of commercially available telemetry transmitters used for continuous measurement of biopotential (one-lead ECG), heart rate, core body temperature and locomotor activity in freely moving mice is shown. Recommendations and protocols for post-operative care and pain relief, improving recovery, well being and survival rate are also presented.
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Body Temperature
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2024
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...
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Body Temperature
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2024
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 (97–99°F), remaining relatively stable...
FAQs
Readings can differ because each site has a different relationship to internal temperature. Esophageal, rectal, bladder, ear, and gastrointestinal measurements are influenced by local blood flow, probe placement, and surrounding conditions. Consequently, clinicians should interpret a value in relation to its anatomical source and measurement circumstances rather than treating every site as interchangeable.
Probe placement directly affects whether the device samples a location that accurately reflects internal temperature. Environmental conditions can also influence measurements, while variation in blood flow changes the relationship between a local site and the body’s thermal state. Careful attention to these factors improves interpretation and helps distinguish a true thermal change from a site-related difference.
Continuous sensors provide a time-resolved view rather than isolated readings. This makes rapid temperature changes visible during anesthesia, intensive care, or controlled temperature management, where a single measurement could miss an important trend. The resulting pattern can support closer monitoring of thermoregulation and help clinicians recognize changing thermal status as it develops.
Clinicians may measure at the esophagus, rectum, bladder, ear, or gastrointestinal tract. These locations serve as measurement sites that approximate internal temperature, but they do not necessarily produce identical values. The appropriate interpretation therefore depends on knowing where the sensor is positioned and recognizing that anatomical location is part of the measurement result.
First identify the measurement site and consider probe placement, local blood flow, and environmental conditions. Then interpret the value in the clinical situation, including possible fever, hypothermia, infection, or altered thermoregulation. This approach reduces the risk of assigning clinical meaning to a number without accounting for how and where it was obtained.
It supports several distinct clinical tasks: recognizing fever and hypothermia, evaluating infection and thermoregulatory disturbances, and monitoring patients during surgery or critical care. Measurements also contribute to assessment of heat-related illness and controlled temperature management. In these settings, the value is useful not only as a single vital sign but also as a basis for tracking change.