Abstract
Aural, rectal, œsophageal, and skin temperatures were monitored in 10 full-term newborn infants at ambient temperatures of 33·8 and 25·6°C in a metabolic chamber. The rectal temperature in a neutral environment (33·8°C) was lower than the œsophageal or aural temperature. The temperature within the external auditory meatus was 0·15-0·2°C higher than the œsophageal temperature. From this it was calculated that brain metabolism was responsible for about 70% of the total heat production in the newborn infant.
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