Document Detail

Sonographic estimate of birth weight: relative accuracy of sonographers versus maternal-fetal medicine specialists.
MedLine Citation:
PMID:  12375539     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To compare the relative accuracy of predicting birth weight among registered diagnostic medical sonographers versus maternal-fetal medicine specialists. STUDY DESIGN: Over 7 months all patients who delivered within 2 weeks and had sonographic measurements of femur length and head and abdominal circumferences by sonographers and physicians were included in the analysis. The exclusion criteria were multiple gestation and anomalous fetuses. Receiver operating-characteristic curves (ROC) were constructed to determine the ability to detect intrauterine growth restriction (IUGR; birth weight < 2,500 g) and macrosomia (birth weight > or = 4,000 g) among term (gestational age > or = 37 weeks) parturients. A level of p < 0.05 was considered significant. RESULTS: Among 365 patients recruited, the mean gestational age was 37.3 +/- 2.4 weeks with a mean birth weight of 3,083 +/- 72.5 g. Among term patients the prevalence of IUGR was 7.5% (18/238) and of macrosomia 12% (29/238). A significantly higher percentage of predictions were within 10% of the birth weight when obtained by sonographers (70%) than physicians (54%; p < 0.0001). Registered sonographers were significantly more likely to detect IUGR than the specialists (area under the ROC curves 0.97 +/- 0.02 vs. 0.92 +/- 0.02, respectively; p = 0.02). Both groups had similar accuracy in detecting macrosomic fetuses (area under the ROC curves 0.92 +/- 0.02 for sonographers and 0.90 +/- 0.02 for physicians; p = 0.40). CONCLUSIONS: Prediction of birth weight is significantly more accurate when sonographers rather than maternal-fetal medicine specialists perform the ultrasonographic examination.
J Humphries; D Reynolds; L Bell-Scarbrough; N Lynn; J A Scardo; S P Chauhan
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  The journal of maternal-fetal & neonatal medicine : the official journal of the European Association of Perinatal Medicine, the Federation of Asia and Oceania Perinatal Societies, the International Society of Perinatal Obstetricians     Volume:  11     ISSN:  1476-7058     ISO Abbreviation:  J. Matern. Fetal. Neonatal. Med.     Publication Date:  2002 Feb 
Date Detail:
Created Date:  2002-10-11     Completed Date:  2003-01-24     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  101136916     Medline TA:  J Matern Fetal Neonatal Med     Country:  United States    
Other Details:
Languages:  eng     Pagination:  108-12     Citation Subset:  IM    
Maternal-Fetal Medicine Department, Spartanburg Regional Center, South Carolina, USA.
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MeSH Terms
Abdomen / embryology,  ultrasonography
Birth Weight*
Femur / embryology,  ultrasonography
Fetal Growth Retardation / diagnosis,  epidemiology,  ultrasonography
Fetal Macrosomia / diagnosis,  epidemiology,  ultrasonography
Gestational Age
Head / embryology,  ultrasonography
ROC Curve
Ultrasonography, Prenatal*

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