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Tympanic versus rectal thermometry in pregnant women
1Division of Health Promotion and Risk Reduction, University of Michigan School of Nursing, Ann Arbor 48109-0482, USA.
Objective:
To assess the accuracy of the tympanic membrane thermometer for use with pregnant women.
Design:
Cross-sectional descriptive study.
Setting:
A major medical center in the midwestern United States.
Participants:
Thirty-three hospitalized, afebrile pregnant women.
Main Outcome Measures:
Tympanic membrane thermometers and glass mercury thermometers were used to measure body temperature at the ear and rectum, respectively. The results were compared using two statistical methods: the Pearson correlation coefficient and a new technique suggested by Bland and Altman (1986).
Results:
Auditory canal temperature measured by a tympanic membrane thermometer correlated with rectal temperature as measured by a glass mercury thermometer (r = 0.38, p = 0.01). Thus, the tympanic membrane thermometer is acceptable for monitoring the body temperature of pregnant women. However, the device's estimation of rectal temperature is not clinically reliable.
Conclusions:
Tympanic membrane thermometers, when applied with direct measures, are acceptable for use with pregnant women. It is not recommended that the rectal estimate mode be used with pregnant women.
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