Document Detail

Outcomes of pregnancy beyond 37 weeks of gestation.
MedLine Citation:
PMID:  16946207     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The aim of the study was to evaluate pregnancy outcomes by weeks of gestation. A second aim was to assess the outcomes in groups with spontaneous or induced labor. METHODS: This was a prospective cohort study of singleton pregnancies delivered after 37 weeks of pregnancy covering a well defined region in Norway from 1990 to 2001 (N = 27,514). Linear regression, chi 2 tests, and multivariable logistic regression analysis were used. RESULTS: Maternal complications varied with gestational age, and were lowest at 39 weeks and highest postterm (cesarean delivery 12.3-21.6%, operative vaginal delivery 10.7-15.4%, maternal hemorrhage 9.7-14.6%). Poor neonatal outcome varied with gestational age only for spontaneous labors (Apgar at 5 minutes less than 7 1.0-2.3%, pH less than 7.10 3.4-5.2%), whereas induction of labor was a risk factor for delivery complications (odds ratio 1.3-2.8), independent of gestational weeks. CONCLUSION: Poor pregnancy outcomes vary with gestational age. Postterm pregnancy and induced labor are prognostic factors for poor outcome.
Runa Heimstad; Pål R Romundstad; Sturla H Eik-Nes; Kjell A Salvesen
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Obstetrics and gynecology     Volume:  108     ISSN:  0029-7844     ISO Abbreviation:  Obstet Gynecol     Publication Date:  2006 Sep 
Date Detail:
Created Date:  2006-09-01     Completed Date:  2006-10-04     Revised Date:  2009-10-26    
Medline Journal Info:
Nlm Unique ID:  0401101     Medline TA:  Obstet Gynecol     Country:  United States    
Other Details:
Languages:  eng     Pagination:  500-8     Citation Subset:  AIM; IM    
Department of Obstetrics and Gynecology and National Center for Fetal Medicine, St. Olavs Hospital, University Hospital, Trondheim, Norway.
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MeSH Terms
Cesarean Section / statistics & numerical data
Chi-Square Distribution
Cohort Studies
Delivery, Obstetric / statistics & numerical data*
Gestational Age
Infant, Newborn
Labor, Induced / methods,  statistics & numerical data*
Labor, Obstetric / physiology
Linear Models
Logistic Models
Obstetric Labor Complications / epidemiology*
Pregnancy Outcome*
Pregnancy, Prolonged*
Prospective Studies
Risk Factors
Vacuum Extraction, Obstetrical / statistics & numerical data

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

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