Relationship between Body Size, Thermal Balance and Thermal Insulation of Term Infants under Various Ambient Conditions
| Autor: | E. Jéquier, L. S. Prod'hom, Endre Sulyok |
|---|---|
| Rok vydání: | 1976 |
| Předmět: |
Body surface area
Body Surface Area Chemistry business.industry Infant Newborn Heat losses Body size Term (time) Metabolism Thermal insulation Pediatrics Perinatology and Child Health Metabolic rate Birth Weight Humans Composite material business Thermal balance Infant Premature Body Temperature Regulation Developmental Biology |
| Zdroj: | Neonatology. 28:42-56 |
| ISSN: | 1661-7819 1661-7800 |
| DOI: | 10.1159/000240803 |
| Popis: | A gradient layer direct calorimetric study was made on the thermal balance of small-for-date, appropriate-for-date and large-for-date term newborn infants during the first 2 days of life. At ambient temperatures of 28 and 32 degrees C, the dry and total heat losses per kilogramme body weight were inversely related to body weight. There was a negative correlation between metabolic rate per kilogramme and body weight, whereas in terms of surface area the correlation became positive. A similar tendency without statistical significance was observed at an ambient temperature of 37 degrees C. In a cool environment (28 degrees C), a significant positive correlation was found between body weight and ambient or total thermal insulations. Tissue and total insulations were inversly related to the metabolic rate. It was concluded that small-for-date newborn infants are handicapped not only by the unfavourable surface-to-mass ratio but also by the limited specific body thermal insulation. |
| Databáze: | OpenAIRE |
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