Document Detail

Sleeping position and electrocortical activity in low birthweight infants.
MedLine Citation:
PMID:  15857877     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To evaluate the effects of prone and supine sleeping positions on electrocortical activity during active (AS) and quiet (QS) sleep in low birthweight infants. DESIGN: Randomised/crossover study. SETTING: Infant Physiology Laboratory at Children's Hospital of New York. PATIENTS: Sixty three healthy, growing, low birthweight (birth weight 795-1600 g) infants, 26-37 weeks gestational age. INTERVENTIONS: Six hour continuous two channel electrocortical recordings, together with minute by minute behavioural state assignment, were performed. The infants were randomly assigned to prone or supine position during the first three hours, and positions were reversed during the second three hours. OUTCOME MEASURES AND RESULTS: Fast Fourier transforms of electroencephalograms (EEGs) were performed each minute and the total EEG power (TP), spectral edge frequency (SEF), absolute (AP) and relative (RP) powers in five frequency bands (0.01-1.0 Hz, 1-4 Hz, 4-8 Hz, 8-12 Hz, 12-24 Hz) were computed. Mean values for TP, SEF, AP, and RP in the five frequency bands in the prone and supine positions during AS and QS were then compared. In the prone sleeping position, during AS, infants showed significantly lower TP, decreased AP in frequency bands 0.01-1.0 Hz, 4-8 Hz, 8-12 Hz, 12-24 Hz, increased RP in 1-4 Hz, and a decrease in SEF. Similar trends were observed during QS, although they did not reach statistical significance. CONCLUSIONS: The prone sleeping position promotes a shift in EEG activity towards slower frequencies. These changes in electrocortical activity may be related to mechanisms associated with decreased arousal in the prone position and, in turn, increased risk of sudden infant death syndrome.
R Sahni; K F Schulze; S Kashyap; K Ohira-Kist; W P Fifer; M M Myers
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Publication Detail:
Type:  Clinical Trial; Journal Article; Randomized Controlled Trial; Research Support, N.I.H., Extramural; Research Support, U.S. Gov't, P.H.S.     Date:  2005-04-27
Journal Detail:
Title:  Archives of disease in childhood. Fetal and neonatal edition     Volume:  90     ISSN:  1359-2998     ISO Abbreviation:  Arch. Dis. Child. Fetal Neonatal Ed.     Publication Date:  2005 Jul 
Date Detail:
Created Date:  2005-07-22     Completed Date:  2005-09-12     Revised Date:  2009-11-18    
Medline Journal Info:
Nlm Unique ID:  9501297     Medline TA:  Arch Dis Child Fetal Neonatal Ed     Country:  England    
Other Details:
Languages:  eng     Pagination:  F311-5     Citation Subset:  AIM; IM    
Department of Pediatrics, College of Physicians and Surgeons, Columbia University, 630 W 168th Street, New York, NY 10032, USA.
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MeSH Terms
Cerebral Cortex / physiology*
Cross-Over Studies
Double-Blind Method
Infant Care / methods
Infant, Low Birth Weight / physiology*
Infant, Newborn
Infant, Premature / physiology*
Posture / physiology*
Prone Position / physiology
Sleep Stages / physiology*
Sudden Infant Death / etiology
Supine Position / physiology
Grant Support

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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