Tympanic membrane temperatures compared to rectal and oral temperatures

Area of Science:

• Pediatrics
• Medical Devices
• Clinical Thermometry

Background:

• Accurate temperature measurement in children is crucial for diagnosis and treatment.
• Traditional methods like rectal and oral thermometry can be invasive or time-consuming.
• Infrared tympanic membrane thermometry offers a rapid, non-invasive alternative.

Purpose of the Study:

• To compare the accuracy and acceptability of tympanic membrane temperatures (using Thermoscan) against rectal and oral temperatures (using IVAC electronic thermometers) in children.
• To evaluate the correlation between ear temperatures and traditional methods across different age groups.
• To assess parental and physician perceptions of ear temperature measurement.

Main Methods:

• A study involving 137 children at Cleveland Clinic Foundation.
• Comparison of tympanic membrane temperatures with rectal or oral temperatures.
• Statistical analysis of correlation coefficients and temperature differences.
• Assessment of factors influencing temperature correlation, such as middle ear conditions.

Main Results:

• Strong positive correlations were found between left ear and right ear temperatures (0.92), rectal and mean ear temperatures (0.77), and oral and mean ear temperatures (0.68).
• Mean temperature differences were -1.1°C (ear vs. rectal) and -0.20°C (ear vs. oral).
• Correlation was reduced in cases of flat tympanograms or middle ear effusion, though subgroup sizes were small.

Conclusions:

• Tympanic membrane thermometry demonstrates a strong correspondence with rectal and oral temperature measurements in pediatric patients.
• The speed of ear thermometry was appreciated, but parental confidence in accuracy varied.
• Further research may be needed to fully understand ear temperature accuracy in specific pediatric subgroups.