The accuracy and precision of body temperature monitoring methods during regional and general anesthesia

Christine G. Cattaneo, Steven Mark Frank, Todd W. Hesel, Hossam K. El-Rahmany, Lauren J. Kim, Kha M. Tran

Research output: Contribution to journalArticle

Abstract

We tested the hypotheses that accuracy and precision of available temperature monitoring methods are different between spinal anesthesia (SA) and general anesthesia (GA), and that patients receiving SA are at equal risk for hypothermia as those receiving GA. Patients scheduled for radical retropubic prostatectomy were enrolled. Either GA (n = 16) or SA (n = 16) was given according to patient and clinician preference. Temperatures were monitored with thermocouple probes at the tympanic membrane, axilla, rectum, and forehead skin surface. Tympanic temperatures were also measured with an infrared device, and forehead skin temperatures were monitored with two brands of liquid crystal thermometer strips. Accuracy and precision of these monitoring methods were determined by using tympanic membrane temperature, measured by thermocouple, as the reference core temperature (T(c)). At the end of surgery, T(c) was similar between SA (35.0 ± 0.1°C) and GA (35.2 ± 0.1°C) (P = 0.44). Accuracy and precision of each temperature monitoring method were similar between SA and GA. Rectal temperature monitoring offered the greatest combination of accuracy and precision. All other methods underestimated T(c). These findings suggest that patients receiving SA or GA are at equal and significant risk for hypothermia, and should have their temperatures carefully monitored, recognizing that most monitoring methods underestimate T(c). Implications: Body temperature should be monitored during spinal anesthesia because patients are at significant risk for hypothermia. Rectal temperature is a valid method of measuring core temperature, whereas other methods tend to underestimate true core temperature.

Original languageEnglish (US)
Pages (from-to)938-945
Number of pages8
JournalAnesthesia and Analgesia
Volume90
Issue number4
StatePublished - 2000

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Conduction Anesthesia
Body Temperature
General Anesthesia
Spinal Anesthesia
Temperature
Hypothermia
Tympanic Membrane
Forehead
Thermometers
Liquid Crystals
Axilla
Skin Temperature
Patient Preference
Prostatectomy
Rectum

ASJC Scopus subject areas

  • Anesthesiology and Pain Medicine

Cite this

Cattaneo, C. G., Frank, S. M., Hesel, T. W., El-Rahmany, H. K., Kim, L. J., & Tran, K. M. (2000). The accuracy and precision of body temperature monitoring methods during regional and general anesthesia. Anesthesia and Analgesia, 90(4), 938-945.

The accuracy and precision of body temperature monitoring methods during regional and general anesthesia. / Cattaneo, Christine G.; Frank, Steven Mark; Hesel, Todd W.; El-Rahmany, Hossam K.; Kim, Lauren J.; Tran, Kha M.

In: Anesthesia and Analgesia, Vol. 90, No. 4, 2000, p. 938-945.

Research output: Contribution to journalArticle

Cattaneo, CG, Frank, SM, Hesel, TW, El-Rahmany, HK, Kim, LJ & Tran, KM 2000, 'The accuracy and precision of body temperature monitoring methods during regional and general anesthesia', Anesthesia and Analgesia, vol. 90, no. 4, pp. 938-945.
Cattaneo, Christine G. ; Frank, Steven Mark ; Hesel, Todd W. ; El-Rahmany, Hossam K. ; Kim, Lauren J. ; Tran, Kha M. / The accuracy and precision of body temperature monitoring methods during regional and general anesthesia. In: Anesthesia and Analgesia. 2000 ; Vol. 90, No. 4. pp. 938-945.
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