Document Detail

A clinical prediction rule for histological chorioamnionitis in preterm newborns.
MedLine Citation:
PMID:  23071549     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Histological chorioamnionitis (HC) is an intrauterine inflammatory process highly associated with preterm birth and adverse neonatal outcome. HC is often clinically silent and diagnosed postnatally by placental histology. Earlier identification could facilitate treatment individualisation to improve outcome in preterm newborns.
AIM: Develop a clinical prediction rule at birth for HC and HC with fetal involvement (HCF) in preterm newborns.
METHODS: Clinical data and placental pathology were obtained from singleton preterm newborns (gestational age ≤ 32.0 weeks) born at Erasmus UMC Rotterdam from 2001 to 2003 (derivation cohort; n = 216) or Máxima MC Veldhoven from 2009 to 2010 (validation cohort; n = 206). HC and HCF prediction rules were developed with preference for high sensitivity using clinical variables available at birth.
RESULTS: HC and HCF were present in 39% and 24% in the derivation cohort and in 44% and 22% in the validation cohort, respectively. HC was predicted with 87% accuracy, yielding an area under ROC curve of 0.95 (95%CI = 0.92-0.98), a positive predictive value of 80% (95%CI = 74-84%), and a negative predictive value of 93% (95%CI = 88-96%). Corresponding figures for HCF were: accuracy 83%, area under ROC curve 0.92 (95%CI = 0.88-0.96), positive predictive value 59% (95%CI = 52-62%), and negative predictive value 97% (95%CI = 93-99%). External validation expectedly resulted in some loss of test performance, preferentially affecting positive predictive rather than negative predictive values.
CONCLUSION: Using a clinical prediction rule composed of clinical variables available at birth, HC and HCF could be predicted with good test characteristics in preterm newborns. Further studies should evaluate the clinical value of these rules to guide early treatment individualisation.
Jasper V Been; Sizzle F Vanterpool; Jasmijn D E de Rooij; G Ingrid J G Rours; René F Kornelisse; Martien C J M van Dongen; Christel J A W van Gool; Ronald R de Krijger; Peter Andriessen; Luc J I Zimmermann; Boris W Kramer
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't; Validation Studies     Date:  2012-10-05
Journal Detail:
Title:  PloS one     Volume:  7     ISSN:  1932-6203     ISO Abbreviation:  PLoS ONE     Publication Date:  2012  
Date Detail:
Created Date:  2012-10-16     Completed Date:  2013-04-04     Revised Date:  2013-07-11    
Medline Journal Info:
Nlm Unique ID:  101285081     Medline TA:  PLoS One     Country:  United States    
Other Details:
Languages:  eng     Pagination:  e46217     Citation Subset:  IM    
Department of Paediatrics, Maastricht University Medical Centre, Maastricht, The Netherlands.
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MeSH Terms
Chorioamnionitis / diagnosis*
Cohort Studies
Infant, Newborn
Infant, Premature*
ROC Curve

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