Document Detail

Relative macrosomia identified by the individualised birthweight ratio (IBR). A better method of identifying the at risk fetus.
MedLine Citation:
PMID:  8122507     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To assess the effectiveness of a newly developed individualised birthweight ratio (IBR), which corrects for physiological birthweight determinants, in identifying infants at risk from the complications of macrosomia. DESIGN: Prospective observational study. SETTING: Obstetric unit, Nottingham City Hospital. SUBJECTS: 2835 women delivered between December 1991 and July 1992 and the infants of 624 of these, selected by virtue of their birthweight for gestation and IBR centile positions. MAIN OUTCOME MEASURES: Skinfold thickness and ponderal index measurements, operative delivery, shoulder dystocia, fetal trauma, impaired glucose tolerance. RESULTS: Using an IBR above the 90th centile as a cut off results in 2.4% of infants being reclassified as normally grown and 3.1% are reclassified as large. The IBR does not result in the identification of any more infants with abnormal ponderal indices or skinfold thicknesses than birthweight for gestation. It does, however, identify more of the infants at risk of operative delivery, shoulder dystocia, fetal trauma and impaired glucose tolerance. CONCLUSION: The IBR significantly improves upon birthweight for gestation in identifying infants who suffer from the complications of relative macrosomia.
D A Sanderson; M A Wilcox; I R Johnson
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Acta obstetricia et gynecologica Scandinavica     Volume:  73     ISSN:  0001-6349     ISO Abbreviation:  Acta Obstet Gynecol Scand     Publication Date:  1994 Mar 
Date Detail:
Created Date:  1994-04-05     Completed Date:  1994-04-05     Revised Date:  2010-03-24    
Medline Journal Info:
Nlm Unique ID:  0370343     Medline TA:  Acta Obstet Gynecol Scand     Country:  DENMARK    
Other Details:
Languages:  eng     Pagination:  246-9     Citation Subset:  IM    
Department of Obstetrics & Gynaecology, City Hospital, Nottingham, United Kingdom.
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MeSH Terms
Birth Weight*
Dystocia / etiology
Glucose Tolerance Test
Infant, Newborn
Labor Presentation*
Pregnancy Outcome
Pregnancy in Diabetics*
Risk Factors

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

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