Document Detail

Ultrasonographic Assessment of Growth and Estimation of Birthweight in Late Gestation Fetal Sheep.
MedLine Citation:
PMID:  21821347     Owner:  NLM     Status:  Publisher    
Our aim was to identify which ultrasound parameters can be most accurately measured and best predict ovine fetal weight in late gestation. Singleton pregnancies were established using embryo transfer in 32 adolescent ewes, which were subsequently overnourished to produce fetuses of variable size (1720-6260 g). Ultrasound measurements at 126-133 days gestation were compared with fetal weight/biometry at late-gestation necropsy (n = 19) or term delivery (n = 13). Abdominal circumference (AC) and renal volume (RV) correlated best with physical measurements (r = 0.78-0.83) and necropsy/birth weight (r = 0.79-0.84). Combination of AC + RV produced an estimated fetal weight equation [Log EFW = 2.115 + 0.003 AC + 0.12 RV - 0.005 RV(2)] with highest adjusted R(2) (0.72) and lowest mean absolute/percentage prediction error (396-550 g/11.1%-13.2%). In conclusion, AC and RV are parameters of choice for assessment of late-gestation ovine fetal growth and can be used to estimate fetal weight with similar accuracy to human fetuses.
David J Carr; Raymond P Aitken; John S Milne; Anna L David; Jacqueline M Wallace
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-8-5
Journal Detail:
Title:  Ultrasound in medicine & biology     Volume:  -     ISSN:  1879-291X     ISO Abbreviation:  -     Publication Date:  2011 Aug 
Date Detail:
Created Date:  2011-8-8     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0410553     Medline TA:  Ultrasound Med Biol     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 World Federation for Ultrasound in Medicine & Biology. Published by Elsevier Inc. All rights reserved.
Rowett Institute of Nutrition and Health, University of Aberdeen, Bucksburn, Aberdeen, United Kingdom; Prenatal Cell and Gene Therapy Group, UCL Institute for Women's Health, University College London, London, United Kingdom.
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