Document Detail

Abdominal circumference: a single measurement versus growth rate in the prediction of intrapartum Cesarean section for fetal distress.
MedLine Citation:
PMID:  11422969     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: The fetal abdominal circumference is the most sensitive ultrasound biometric measurement for predicting intrauterine growth restriction, which is associated with an increased risk of intrapartum fetal distress. We sought to evaluate and compare whether a third-trimester ultrasound measurement of abdominal circumference made within 1 week prior to delivery better predicts operative delivery for fetal distress when compared with the growth velocity of the abdominal circumference in the third trimester. METHODS: Retrospective analysis was carried out of prospectively collected ultrasound data on 117 patients with singleton gestations who had had at least two ultrasound assessments performed less than 6 weeks apart in the third trimester, with the last ultrasound performed within 1 week prior to delivery. The abdominal circumference value of the last ultrasound prior to delivery was placed into one of three categories: < or = 5% centile, > 5 to < or = 10% centile and > 10% centile for gestational age. The growth velocity of the abdominal circumference per week was placed into one of three categories: < or = 5 mm/week, 6-10 mm/week and > or = 11 mm/week. The chi-squared test was used to compare differences between the incidence of fetal distress between the groups. RESULTS: The incidences of Cesarean section for fetal distress in relation to a single measurement of the abdominal circumference were: < or = 5% centile, 8/23 (35%); > 5 to < or = 10% centile, 3/12 (25%); > 10% centile, 8/81 (10%) ( P < 0.05). The incidences of Cesarean section for fetal distress with the three abdominal circumference growth velocities were: < or = 5 mm/week, 9/55 (16%); 6-10 mm/week, 4/11 (36%); > or = 11 mm/week, 8/51 (16%) ( P = 0.9401). CONCLUSION: A single measure of the fetal abdominal circumference made within 1 week prior to delivery is superior to an assessment of growth rate of the fetal abdomen in the third trimester in discriminating patients who require Cesarean section for fetal distress.
K P Williams; N Nwebube
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Publication Detail:
Type:  Comparative Study; Journal Article    
Journal Detail:
Title:  Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology     Volume:  17     ISSN:  0960-7692     ISO Abbreviation:  Ultrasound Obstet Gynecol     Publication Date:  2001 Jun 
Date Detail:
Created Date:  2001-06-25     Completed Date:  2001-08-23     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  9108340     Medline TA:  Ultrasound Obstet Gynecol     Country:  England    
Other Details:
Languages:  eng     Pagination:  493-5     Citation Subset:  IM    
Department of Obstetrics and Gynecology, University of British Columbia, Vancouver, Canada.
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MeSH Terms
Abdomen / embryology*,  ultrasonography
Cesarean Section / statistics & numerical data*
Chi-Square Distribution
Embryonic and Fetal Development / physiology
Fetal Distress / epidemiology,  etiology,  ultrasonography*
Fetal Growth Retardation / complications,  epidemiology,  ultrasonography*
Gestational Age
Predictive Value of Tests
Pregnancy Trimester, Third
Prospective Studies
Retrospective Studies
Risk Assessment
Sensitivity and Specificity
Ultrasonography, Prenatal / methods*

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

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