Infrared tympanic thermometry for neonatal temperature assessment

Area of Science:

• Neonatal care
• Medical device accuracy
• Pediatric thermometry

Background:

• Accurate temperature monitoring is critical for neonatal care.
• Traditional methods like axillary and rectal thermometry have established accuracy.
• Infrared tympanic thermometers offer a non-invasive alternative, but their neonatal accuracy needs validation.

Purpose of the Study:

• To evaluate the accuracy and precision of infrared tympanic thermometers in neonates.
• To compare tympanic temperatures with simultaneous axillary and rectal measurements.
• To determine the reliability of tympanic thermometry for neonatal temperature assessment.

Main Methods:

• A descriptive, comparative study was conducted in a tertiary-level perinatal center's newborn nursery.
• Thirty-four full-term newborns were included in the study.
• Temperatures were measured using infrared tympanic thermometers, and compared with axillary and rectal temperatures obtained via electronic thermometers.

Main Results:

• No significant difference was found between tympanic and axillary temperatures (95% CI variation: +/- 0.7-0.9°C).
• The mean difference between tympanic and rectal temperatures was 0.4°C (95% CI variation: +/- 0.7-0.75°C).
• Right ear measurements approximated axillary temperatures, while protected ear measurements approximated rectal temperatures, with the protected ear being slightly higher.

Conclusions:

• Greater variation exists between tympanic and axillary/rectal measurements than between axillary and rectal measurements alone.
• Infrared tympanic thermometry may serve as a rapid screening tool for neonatal temperature.
• The utility of tympanic thermometry for close monitoring of unstable neonates remains uncertain.