Document Detail

Reference values for amplitude-integrated EEGs in infants from preterm to 3.5 months of age.
MedLine Citation:
PMID:  21482614     Owner:  NLM     Status:  MEDLINE    
OBJECTIVES: Amplitude-integrated electroencephalogram (aEEG) is a valuable tool for the continuous evaluation of functional brain maturation in infants. The amplitudes of the upper and lower margins of aEEGs are postulated to change with maturation and correlate with postmenstrual age (PMA). In this study we aimed to establish reliable reference values of aEEG amplitudes, which provide quantitative guidelines for assessing brain maturation as indicated by aEEG results in neonates and young infants.
METHODS: aEEGs from healthy infants (n = 274) with PMAs that ranged from 30 to 55 weeks were divided into 10 groups according to their PMAs. Two 5-minute segments were selected from each aEEG and were used to automatically calculate the upper and lower margins and bandwidths of the aEEG tracings.
RESULTS: Interobserver agreement was achieved with an overall correlation of 0.99. The upper and lower margins of the aEEGs in both active and quiet sleep clearly rose in infants after the neonatal period. The bandwidth defined as the graphic distance decreased almost monotonically throughout the PMA range from 30 to 55 weeks. The lower margin of the aEEG was positively correlated with PMA, with a larger rank correlation coefficient during quiet sleep (r = 0.89) than during active sleep (r = 0.49).
CONCLUSIONS: Reference values of aEEG amplitudes were obtained for infants with a wide range of PMAs and constituted the basis for the quantitative assessment of aEEG changes with maturation in neonates and young infants. The normative amplitudes of aEEG margins, especially of the lower margin in quiet sleep, are recommended as a source of reference data for the identification of potentially abnormal aEEG results.
Dandan Zhang; Yunfeng Liu; Xinlin Hou; Congle Zhou; Yuejia Luo; Datian Ye; Haiyan Ding
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't     Date:  2011-04-11
Journal Detail:
Title:  Pediatrics     Volume:  127     ISSN:  1098-4275     ISO Abbreviation:  Pediatrics     Publication Date:  2011 May 
Date Detail:
Created Date:  2011-05-02     Completed Date:  2011-07-11     Revised Date:  2011-09-16    
Medline Journal Info:
Nlm Unique ID:  0376422     Medline TA:  Pediatrics     Country:  United States    
Other Details:
Languages:  eng     Pagination:  e1280-7     Citation Subset:  AIM; IM    
State Key Laboratory of Cognitive Neuroscience and Learning, Beijing Normal University, 19 Xinjiekou Wai St, Beijing 100875, People's Republic of China.
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MeSH Terms
Age Factors
Brain / growth & development*,  physiology
Case-Control Studies
Child Development / physiology
Electroencephalography / methods*
Follow-Up Studies
Gestational Age
Infant, Newborn
Infant, Premature*
Monitoring, Physiologic / methods
Observer Variation
Reference Values
Time Factors
Erratum In:
Pediatrics. 2011 Aug;128(2):390

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

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