Cited by 72Non-Invasive Vital Sign MonitoringThermal Regulation in MedicineThermoregulation and physiological responses

Thermometry and interpretation of body temperature

Open access
Chen, Wenxi·2019·Biomedical Engineering Letters

Abstract

This article reviews the historical development and up-to-date state of thermometric technologies for measuring human body temperature (BT) from two aspects: measurement methodology and significance interpretation. Since the first systematic and comprehensive study on BT and its relation to human diseases was conducted by Wunderlich in the late 19th century, BT has served as one of the most fundamental vital signs for clinical diagnosis and daily healthcare. The physiological implication of BT set point and thermoregulatory mechanisms are briefly outlined. Influential determinants of BT measurement are investigated thoroughly. Three types of BT measurement, i.e., core body temperature, surface body temperature and basal body temperature, are categorized according to its measurement position and activity level. With the comparison of temperature measurement in industrial fields, specialties in technological and biological aspects in BT measurement are mentioned. Methodologies used in BT measurement are grouped into instrumental methods and mathematical methods. Instrumental methods utilize results of BT measurements directly from temperature-sensitive transducers and electronic instrumentations by the combination of actual and predictive measurement, invasive and noninvasive measurement. Mathematical methods use several numerical models, such as multiple regression model, autoregressive model, thermoregulatory mechanism-based model and the Kalman filter-based method to estimate BT indirectly from some relevant vital signs and environmental factors. Thermometry modalities are summarized on the dichotomies into invasive and noninvasive, contact and noncontact, direct and indirect, free and restrained, 1-D and n-D. Comprehensive interpretation of BT has an equal importance as the measurement of BT. Two modes to apply BT are classified into real-time applications and long-term applications. With rapid advancement in IoT infrastructure, big data analytics and AI platforms, prospects for future development in thermometry and interpretation of BT are discussed.

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Crossref · 10.1007/s13534-019-00102-2

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  • The body temperature of an animal is closely related to its basal metabolic rate.

    “The body temperature of an animal is closely related to its basal metabolic rate (Chen, 2019).”

    From Body temperatures of <i>Manis pentadactyla</i> and <i>Manis javanica</i> (2021) · cites this paper as Chen, 2019

    Section 1.1 links human body temperature to metabolic activity, stating that body temperature reflects thermal energy generated by metabolism. It does not specifically discuss basal metabolic rate or establish this relationship for animals generally. (LLM, conf=0.84)

    Experimental — accuracy not yet measured
  • The low body temperatures in pangolins are possibly due to the low metabolic rates of the species.

    “The low body temperatures in pangolins are possibly due to the low metabolic rates of species.”

    From Body temperatures of <i>Manis pentadactyla</i> and <i>Manis javanica</i> (2021) · cites this paper as Chen, 2019

    Section 1.1 (page unavailable) links human body temperature to heat generated by metabolism, supporting the general physiological connection. The paper does not address pangolins or establish that their low body temperatures may result from low metabolic rates; searches for pangolins and species-specific metabolic rates found no such passage. (LLM, conf=0.77)

    Experimental — accuracy not yet measured
  • Indirect core body temperature evaluation can achieve a high accuracy of ±0.03 °C.

    “From these data, the internal core body temperature is evaluated with a high accuracy of ±0.03 °C [129,140,146,147,148,149].”

    From The Current State of Optical Sensors in Medical Wearables (2022) · cites this paper as [140]

  • Core temperature changes are affected by circadian rhythms.

    “Core temperature changes are affected by circadian rhythms.”

    From The Current State of Optical Sensors in Medical Wearables (2022) · cites this paper as [140]

  • Continuous measurement of core body temperature can determine the patient's circadian cycle.

    “From continuous measurements of core body temperature, we can determine the circadian cycle of the patient.”

    From The Current State of Optical Sensors in Medical Wearables (2022) · cites this paper as [140]

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Research works printed but not linked: 4

  1. Tagawa T, Tamura T, Oberg AP. Biomedical sensors and instru- ments. Boca Raton: CRC Press; 2011.
  2. Wikipedia. Human body temperature. https ://en.wikip edia.org/ wiki/Human _body_tempe ratur e#cite_note-pmid1 87880 94-2. Accessed 5 Dec 2018.
  3. Asayama M. Guideline for the prevention of heat disorder in Japan. Global Environ Res. 2009;13(1):19-25.
  4. Huang M, Chen W, Nemoto T. Core temperature rhythm of bed- ridden patients with sequelae of cerebral infarction in the 49th annual conference of Japanese society of medical and biomedical engineering. Osaka, Japan. 2010.

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Authors
Chen, W.
Affiliations
University of Aizu (JP)
Corresponding author
Chen, Wenxi
Venue
Biomedical Engineering Letters
Published
2019-02
Volume
9
Issue
1
Pages
3-17
ISSN
  • 2093-985X (ISSN-L)
  • 2093-9868
OpenAlex
W2912226957
Cited by
72
References
57
Citations by year
2026: 4 · 2025: 12 · 2024: 18 · 2023: 7 · 2022: 16 · 2021: 6 · 2020: 6 · 2019: 3
FWCI
0.62
Type
journal article
Language
en
Open access
Locations
  • Biomedical Engineering Letters (publishedVersion, other-oa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
Funders
University of Aizu (2018-P-14)
Topics
  • Physical Sciences › Engineering › Biomedical Engineering › Non-Invasive Vital Sign Monitoring
  • Health Sciences › Medicine › Critical Care and Intensive Care Medicine › Thermal Regulation in Medicine
  • Health Sciences › Medicine › Physiology › Thermoregulation and physiological responses
Keywords
body temperature measurement, temperature measurement, core body temperature, skin temperature, basal body temperature, thermoregulation, body temperature set point, non-invasive temperature measurement, Kalman filter, autoregressive models, multiple regression model, vital signs, Internet of Things, artificial intelligence, big data analytics

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