Document Detail

Macrosomia prediction using ultrasound fetal abdominal circumference of 35 centimeters or more.
MedLine Citation:
PMID:  10214826     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: To determine if birth weights greater than 4000 g can be predicted by ultrasound measurements of abdominal circumferences. METHODS: In 1996, 254 newborns delivered at Tampa General Hospital weighed at least 4000 g, 84 of whom had ultrasound examinations within 2 weeks of delivery. Those were compared with 84 neonates with recent ultrasounds who weighed less than 4000 g. Data were abstracted retrospectively from maternal medical records. RESULTS: The best linear predictor of birth weight was ultrasound measurement of abdominal circumference (AC), which had a correlation coefficient of 0.95. An AC measurement of 35 cm or more predicted 93% of macrosomic infants. Among 177 macrosomic infants born vaginally, 23 (13%) had shoulder dystocia. In that group, induction of labor was associated with a greater than three-fold increase in risk of shoulder dystocia (odds ratio [OR] 3.4, 95% confidence interval [CI] 1.4, 8.2; P < .01). Labor augmentation was not associated with increased risk of shoulder dystocia. CONCLUSION: Abdominal circumference measurements were useful in screening for suspected macrosomia. An AC measurement of 35 cm or more identified more than 90% of macrosomic infants who were at risk for shoulder dystocia. Induction of labor in macrosomic patients increased the risk of shoulder dystocia.
A Jazayeri; J A Heffron; R Phillips; W N Spellacy
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Obstetrics and gynecology     Volume:  93     ISSN:  0029-7844     ISO Abbreviation:  Obstet Gynecol     Publication Date:  1999 Apr 
Date Detail:
Created Date:  1999-05-20     Completed Date:  1999-05-20     Revised Date:  2009-10-26    
Medline Journal Info:
Nlm Unique ID:  0401101     Medline TA:  Obstet Gynecol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  523-6     Citation Subset:  AIM; IM    
Department of Obstetrics and Gynecology, Louisiana State University Medical Center, Shreveport, USA.
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MeSH Terms
Abdomen / embryology*,  ultrasonography*
Birth Weight
Fetal Macrosomia / ultrasonography*
Infant, Newborn
Predictive Value of Tests
Ultrasonography, Prenatal*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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