Document Detail


The association between customised small for gestational age infants and pre-eclampsia or gestational hypertension varies with gestation at delivery.
MedLine Citation:
PMID:  17378821     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
OBJECTIVES: (1) To describe the association between small for gestational age (SGA) infants and pre-eclampsia (PE) and gestational hypertension (GH) and (2) to determine how this association changes with gestational age at delivery using customised centiles to classify infants as SGA. DESIGN: A retrospective observational study. SETTING: National Women's Hospital, a Tertiary Referral Centre in Auckland, New Zealand. POPULATION: A total of 17 855 nulliparous women delivering between 1992 and 1999. METHODS: A comparison of the number of women with a customised SGA infant, PE and GH according to gestational age at delivery. MAIN OUTCOME MEASURES: The incidence of SGA infants (defined as birthweight <10th customised centile), PE and GH at <34, 34-36(+6) and > or =37 weeks. RESULTS: A total of 1847 (10.3%) infants were SGA, 520 (2.9%) women had PE and 1361 (7.6%) had GH. SGA, PE and GH all occurred more commonly with increasing gestation at delivery with 85%, 62% and 90% of cases delivered at term. In women delivering SGA infants, coexisting PE was more likely to occur among those delivered preterm than at term (38.6% at <34 weeks [relative risk, RR 10.2 95%CI 7.3-14.4], 22.4% at 34-36(+6) weeks [RR 6.0 95%CI 4.1-8.6] and 3.8% at > or =37 weeks [OR 1.0]). Women with preterm PE were more likely to have a SGA infant than women with term PE (57.1% at <34 weeks [RR 3.1 95%CI 2.3-4.2], 31.7% at 34-36(+6) weeks [RR 1.7 95%CI 1.2-2.5]) and 18.3% at > or =37 weeks [OR 1.0]). There was a similar association between GH and SGA infants as gestation advanced (57.6% at <34 weeks [RR 4.8 95%CI 3.4-6.6], 30.5% at 34-36(+6) weeks [RR 2.5 95%CI 1.8-3.5] and 12.1% > or =37 weeks [OR 1.0]). CONCLUSIONS: SGA infants and PE are more likely to coexist in preterm births compared with term births. This is likely to reflect the degree of placental involvement in each disease process.
Authors:
K M Groom; R A North; K K Poppe; L Sadler; L M E McCowan
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  BJOG : an international journal of obstetrics and gynaecology     Volume:  114     ISSN:  1470-0328     ISO Abbreviation:  BJOG     Publication Date:  2007 Apr 
Date Detail:
Created Date:  2007-03-23     Completed Date:  2007-05-15     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  100935741     Medline TA:  BJOG     Country:  England    
Other Details:
Languages:  eng     Pagination:  478-84     Citation Subset:  AIM; IM    
Affiliation:
Department of Obstetrics and Gynaecology, Faculty of Medical and Health Sciences, School of Population Health (Building 730), University of Auckland, Tamaki Campus, Auckland, New Zealand. katiegroom@xtra.co.nz
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MeSH Terms
Descriptor/Qualifier:
Delivery, Obstetric
Female
Gestational Age*
Humans
Hypertension, Pregnancy-Induced / physiopathology*
Infant, Newborn
Infant, Small for Gestational Age / physiology*
Pre-Eclampsia / physiopathology*
Pregnancy
Retrospective Studies

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