Document Detail

Factors affecting the development of night time temperature rhythms.
MedLine Citation:
PMID:  1444524     Owner:  NLM     Status:  MEDLINE    
The rectal temperature of 26 infants between 6 and 16 weeks old was monitored continuously for one night each week. Rectal temperature always decreased with sleep but the minimum temperature attained changed with age. Some time between 8 and 16 weeks old the minimum sleeping rectal temperature decreased abruptly from around 36.8 degrees C to around 36.4 degrees C. This change was complete within one week and did not normally revert unless the infant became ill. Some infants changed as early as 8 weeks old, others not until 16 weeks. Breast fed infants changed significantly earlier than bottle fed infants. Girls changed significantly earlier than boys. First born infants changed significantly earlier than second or subsequent infants. Early changes were significantly more likely to be sleeping lateral or supine, and to have older mothers. They tended to come from more affluent families. There was no association between the time of change and the thermal environment in which the infant slept or the number of episodes of minor illness in the early weeks of life.
M R Lodemore; S A Petersen; M P Wailoo
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Archives of disease in childhood     Volume:  67     ISSN:  1468-2044     ISO Abbreviation:  Arch. Dis. Child.     Publication Date:  1992 Oct 
Date Detail:
Created Date:  1992-12-22     Completed Date:  1992-12-22     Revised Date:  2010-09-07    
Medline Journal Info:
Nlm Unique ID:  0372434     Medline TA:  Arch Dis Child     Country:  ENGLAND    
Other Details:
Languages:  eng     Pagination:  1259-61     Citation Subset:  AIM; IM    
Department of Child Health, University of Leicester.
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MeSH Terms
Aging / physiology
Birth Order
Body Temperature / physiology*
Bottle Feeding
Breast Feeding
Circadian Rhythm / physiology*
Infant, Newborn
Sex Factors
Socioeconomic Factors
Grant Support
//Wellcome Trust

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