Document Detail

First-trimester screening for fetal triploidy at 11 to 14 weeks: a role for fetal biometry.
MedLine Citation:
PMID:  15966039     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: Intrauterine growth restriction in triploidy has been reported as early as in the first trimester. This study was undertaken to evaluate the ability of first-trimester crown rump length (CRL)-based charts to detect triploid fetuses. MATERIAL AND METHODS: Analysis of fetal biometry in cases of triploidy diagnosed in the first trimester over the last three years. Biometry for abdominal circumference (AC), head circumference (HC) and biparietal diameter (BPD) was analyzed in relation to both gestational age (GA)-based charts and to CRL-based charts. RESULTS: Five cases of fetal triploidy were diagnosed at 11 to 14 weeks. Screening based on nuchal translucency (NT) and maternal age showed a risk > 1/300 in only one of the 5 cases of triploid fetus. In all of these five cases, CRL-based biometry was grossly abnormal, although it was abnormal in only two of these five cases in relation to GA-based charts. CONCLUSION: First-trimester CRL-based biometry charts seem to reflect early asymmetrical growth delay in triploidy more accurately than GA-based charts. CRL-based biometry is likely to improve the early detection of triploid pregnancies without leading to dating error.
L J Salomon; J P Bernard; J Nizard; Y Ville
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Prenatal diagnosis     Volume:  25     ISSN:  0197-3851     ISO Abbreviation:  Prenat. Diagn.     Publication Date:  2005 Jun 
Date Detail:
Created Date:  2005-06-28     Completed Date:  2005-10-07     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8106540     Medline TA:  Prenat Diagn     Country:  England    
Other Details:
Languages:  eng     Pagination:  479-83     Citation Subset:  IM    
Service de Gynécologie-Obstétrique, Centre Hospitalier Intercommunal de Poissy-St Germain, 10 rue Champ Gaillard, Poissy, France.
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MeSH Terms
Abdomen / embryology
Chorionic Villi Sampling
Crown-Rump Length
Gestational Age*
Head / embryology
Maternal Age
Nuchal Translucency Measurement
Parietal Lobe / embryology
Prenatal Diagnosis / methods*
Trisomy / diagnosis*
Ultrasonography, Prenatal*

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