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Related Experiment Videos

"Deep-forehead" temperature correlates well with blood temperature.

T Harioka1, T Matsukawa, M Ozaki

  • 1Department of Anesthesia, Shimada Municipal Hospital, Japan.

Canadian Journal of Anaesthesia = Journal Canadien D'Anesthesie
|October 14, 2000
PubMed
Summary

Deep-forehead temperature measurement offers excellent accuracy and precision comparable to core body temperature monitoring methods. This non-invasive technique provides clinically sufficient results for surgical patients.

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Area of Science:

  • Anesthesiology
  • Surgical Monitoring
  • Medical Thermometry

Background:

  • Accurate core body temperature monitoring is crucial during surgery.
  • Traditional methods like rectal, esophageal, and tympanic membrane temperatures have limitations.
  • Non-invasive alternatives are sought for improved patient care and monitoring efficiency.

Purpose of the Study:

  • To assess the accuracy and precision of deep-forehead temperature measurements.
  • To compare deep-forehead temperature with established core temperature indicators: blood, rectal, esophageal, and tympanic membrane temperatures.
  • To determine the clinical acceptability of deep-forehead temperature for surgical settings.

Main Methods:

  • A study involving 41 patients undergoing lengthy abdominal and thoracic surgeries.

Related Experiment Videos

  • Deep-forehead temperature measured with a Coretemp thermometer.
  • Comparison against pulmonary artery blood temperature as the reference standard, alongside rectal, esophageal, and tympanic membrane temperatures.
  • Statistical analysis using correlation, regression, and Bland and Altman methods.

    • Main Results:

    • Deep-forehead temperature demonstrated strong correlation (r2=0.85) with blood temperature.
    • Bias for deep-forehead temperature was 0.0°C, matching tympanic membrane temperature and outperforming rectal and esophageal.
    • Precision (standard deviation of difference) was 0.3°C, comparable to rectal temperature measurements.

    Conclusions:

    • Deep-forehead temperature measurement exhibits excellent accuracy and clinically sufficient precision.
    • It is a viable alternative to rectal, esophageal, and tympanic membrane temperature monitoring in surgical patients.
    • This non-invasive method provides reliable core temperature data comparable to established core temperature sites.