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Neonatology pp 178-188 | Cite as

Physical Environment: the Thermal Environment

  • Gunnar Sedin

Abstract

During intrauterine life, heat production by the fetus results in a fetal temperature that is about 0.5°C higher than the maternal temperature [1]. After birth, the newborn infant is exposed to air and surfaces, which have a much lower temperature than that previously experienced in utero. The skin surface at birth is covered with amniotic fluid, causing heat loss through evaporation in an environment with a low vapor pressure [2]. As a result the body temperature of the infant is lowered, and the rate of this reduction is influenced by the temperature of the environmental air in the delivery room and the delivery of its flow. This gives rise to thermogenic responses that increase basal heat production [1, 3] and the skin circulation may decrease to lower the heat losses [4].

Keywords

Heat Exchange Preterm Infant Newborn Infant Radiant Heater Normal Body Temperature 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Italia 2012

Authors and Affiliations

  • Gunnar Sedin
    • 1
  1. 1.Department of Women’s and Children’s HealthUniversity Children’s HospitalUppsalaSweden

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