Document Detail

Fetal Weight Estimation in Extreme Macrosomia (≥ 4,500 g): Comparison of 10 Formulas.
MedLine Citation:
PMID:  22179801     Owner:  NLM     Status:  Publisher    
Purpose: The aim of this retrospective study was to compare the accuracy of 10 commonly used weight estimation formulas in a group of fetuses with extreme macrosomia ( ≥ 4 500 g). Materials and Methods: Ten formulas were evaluated in a group of 174 fetuses with a birth weight (BW) ≥ 4 500 g. Each fetus underwent ultrasound examination with complete biometric parameters within 7 days of delivery. The accuracy of the different formulas for fetal weight estimation (EFW) was compared by mean percentage error (MPE), median of the absolute percentage error (MAPE), the "limits-of-agreement" method and the percentage of EFW falling within the 10 % range of the true birth weight. Results: MPE showed the largest deviation from zero with the Schild formula (MPE - 15.43 %) and the Shepard formula (MPE + 6.08 %) and was closest to zero with the Hadlock II formula (MPE - 5.34 %). The MPE of all formulas showed significant bias when compared to zero. All tested formulas, except the Shepard and Shinozuka equations, significantly underestimated fetal weight. The lowest MAPE was found for the Merz formula (7.23 %). The Hadlock II formula obtained the highest percentage of EWF within the 10 % range of the true birth weight (66.1 %). Conclusion: Exact weight estimation in extreme macrosomia remains an unsolved problem, and can therefore only conditionally provide a sufficient basis for clinical decision processes.
F Faschingbauer; F Voigt; T W Goecke; J Siemer; M W Beckmann; B Yazdi; R L Schild
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-12-16
Journal Detail:
Title:  Ultraschall in der Medizin (Stuttgart, Germany : 1980)     Volume:  -     ISSN:  1438-8782     ISO Abbreviation:  -     Publication Date:  2011 Dec 
Date Detail:
Created Date:  2011-12-19     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8303585     Medline TA:  Ultraschall Med     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© Georg Thieme Verlag KG Stuttgart · New York.
Geburtshilfe und Pränatalmedizin, Universitätsfrauenklinik Erlangen.
Vernacular Title:
Gewichtsschätzung bei Feten mit stark ausgeprägter Makrosomie (≥ 4,500 g): ein Vergleich von 10 Formeln.
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