Document Detail


Ultrasound weight estimation of large fetuses.
MedLine Citation:
PMID:  22762512     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
Objective. To compare the accuracy of fetal weight estimation in large fetuses using four ultrasound formulas. Design. Prospective comparative study. Setting. University Hospital, Lund, Sweden. Population. Large-for-gestational age fetuses (n = 114) at a routine ultrasound examination in the third trimester. Methods. Persson & Weldner two-dimensional formula was compared with Hart et al. two-dimensional formula incorporating maternal weight, and Lee et al. and Lindell & Maršál three-dimensional formulas. The formulas are based on two-dimensional measurements of fetal head, abdomen, and femur, and three-dimensional volumetry of fetal abdomen and thigh. Main outcome measure. Accuracy in detection of fetuses with birth weight >4 000 g and >4 500 g. Results. For fetuses >4 000 g, Lindell & Maršál three-dimensional formula showed significantly smaller mean absolute percentage error than Persson & Weldner two-dimensional, and Lee et al. three-dimensional formulas (p = 0.04 and p < 0.001, respectively). No significant difference between Lindell & Maršál three-dimensional and Hart et al. two-dimensional formulas was found. Receiver operating characteristic curve showed higher detection rate for fetuses with birth weight >4 500 g using three-dimensional compared to two-dimensional technique. The best performance in detecting fetuses with birth weight >4 500 g showed Lindell & Maršál three-dimensional formula: for estimated fetal weight >4 300 g the detection rate was 93% and false positive rate 38%. Conclusion. The ability to detect macrosomic fetuses in a preselected high-risk group was higher using the fetal weight estimation with a three-dimensional compared to a two-dimensional ultrasound technique, with or without maternal weight included.
Authors:
Gun Lindell; Karin Källén; Karel Maršál
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-7-4
Journal Detail:
Title:  Acta obstetricia et gynecologica Scandinavica     Volume:  -     ISSN:  1600-0412     ISO Abbreviation:  -     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-7-5     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0370343     Medline TA:  Acta Obstet Gynecol Scand     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
© 2012 The Authors Acta Obstetricia et Gynecologica Scandinavica© 2012 Nordic Federation of Societies of Obstetrics and Gynecology.
Affiliation:
Department of Obstetrics and Gynecology, Clinical Sciences Lund, and Center for Reproduction Epidemiology, Tornblad Institute, Lund University, Lund, Sweden.
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