Document Detail

New First-Trimester Crown-Rump Length Equations from a French General Population.
MedLine Citation:
PMID:  22987010     Owner:  NLM     Status:  Publisher    
Introduction: The purpose of this study was to obtain precise knowledge of fetal biometric measurements, in particular crown-rump length (CRL). Our results have been carefully compared to equations found in the literature. Materials and Methods: Single-operator measurements of 2,123 spontaneous pregnancies from a general French population provided new statistical relationships between fetal age (FA) and CRL. Comparisons were made with measurements obtained from 402 in vitro fertilizations (IVFs) for which FA were known. Heteroskedastic and robust regressions were compared by cross-validation, and prediction errors were studied. All ultrasound measurements were taken during standard follow-ups of pregnancies, without any additional features. Results: From a cleaned subsample of 513 spontaneous pregnancies, we reported good modeling of first-term embryonic growth, with equations and predictions of standard deviations agreeing with objective datations for IVFs. Most precise CRL measurements were predicted for FA of 49 days. Discussion: Our results allow future detection of fetal growth abnormalities using Z-scores throughout the first trimester.
Marc Constant; Viet Chi Tran; Bernard Benoit; Francis Vasseur
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-14
Journal Detail:
Title:  Fetal diagnosis and therapy     Volume:  -     ISSN:  1421-9964     ISO Abbreviation:  Fetal. Diagn. Ther.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9107463     Medline TA:  Fetal Diagn Ther     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 S. Karger AG, Basel.
Centre de Radiologie et d'Imagerie Médicale, Lambersart, France.
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