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Abdominal circumference ratio for the diagnosis of intertwin birth weight discordance
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Teresinha Simoes
Veröffentlicht/Copyright:
18. Oktober 2010
Abstract
Objectives: We assessed the accuracy of predicting severe twin birth weight discordance (>25%) using the estimated fetal weights (EFW) and abdominal circumference (AC) ratio.
Method: A cohort of twin gestations underwent ultrasound examinations within two weeks from birth. We focused on the accuracy of EFW and on the diagnosis of severe birth weight discordance by the difference in EFWs and the AC ratio.
Results: The 661 eligible twin pairs included 51 (7.7%) severely discordant pairs. The accuracy of an EFW to predict the actual birth weight was quite poor, with an acceptable specificity (96.4%), but low sensitivity (28.6–40.5%), to detect severely discordant pairs, whereas an AC ratio of 1.3 detected these discordant pairs with sensitivity and specificity of 97.3–100% and 99.6–99.7%, respectively.
Conclusion: By comparing EFWs, 59.5–71.4% of discordant pairs >25% are missed, whereas an AC ratio >1.3 would identify almost all cases.
Keywords: Abdominal circumference ratio; birth weight discordance; estimated fetal weight; twins; ultrasound
Received: 2010-3-15
Revised: 2010-7-9
Accepted: 2010-7-14
Published Online: 2010-10-18
Published in Print: 2011-01-01
©2011 by Walter de Gruyter Berlin New York
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Schlagwörter für diesen Artikel
Abdominal circumference ratio;
birth weight discordance;
estimated fetal weight;
twins;
ultrasound
Artikel in diesem Heft
- Publisher's note
- Publisher's Note
- Review articles
- 3D and 4D sonography and magnetic resonance in the assessment of normal and abnormal CNS development: alternative or complementary
- Selective reduction in twins and multiple pregnancies
- Original articles – Obstetrics
- Do uterotrophic drugs increase the risk of fatal hemorrhagic brain stroke?
- Parental factors affecting the weights of the placenta and the offspring
- Trends in maternal mortality due to obstetric hemorrhage in urban and rural China, 1996–2005
- Original articles – Fetus
- Abdominal circumference ratio for the diagnosis of intertwin birth weight discordance
- Predicting survival of periviable fetuses using NICHD fetal heart rate categories
- Prospective risk of stillbirth in monochorionic-diamniotic twin gestations: a population based study
- Original articles – Newborn
- Effect of ibuprofen on bilirubin-albumin binding affinity in premature infants
- Evaluation and clinical application of changes in thyroid hormone and TSH levels in critically ill full-term newborns
- NCI classification of thrombocytopenia in extremely preterm neonates and its association with mortality and morbidity
- Epidemiology of congenital syphilis in a South Bronx population: a follow-up study
- Quantitative ultramicrotest for newborn screening of galactosemia in Cuba
- Expression of soluble Fas in the cerebrospinal fluid of preterm infants with posthemorrhagic hydrocephalus and cystic white matter damage
- Early left ventricular diastolic dysfunction in premature infants born to preeclamptic mothers
- Letter to the Editors
- Perimortem instrumental vaginal delivery
- Human sex ratio at birth and related factors
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- Congress calendar
- Congress Calendar
