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Ductus venosus flow at 11–13 weeks in the prediction of birth weight discordance in monochorionic twins
-
Alexandra Matias
,
Nerea Maiz
Published/Copyright:
June 10, 2011
Abstract
Objective: To examine if assessment of ductus venosus (DV) flow, crown-rump length (CRL) and nuchal translucency (NT) thickness can predict the discordance in birth weight in monochorionic (MC) twin pregnancies resulting in two live births.
Methods: In this prospective study, we assessed CRL, NT and DV flow at 11+0–13+6 weeks' gestation in 326 MC twin pregnancies. The study population included 237 pregnancies without major abnormalities or prenatal interventions resulting in two live births. We examined the value of DV flow and discordance in NT and CRL in the prediction of discordance in birth weight.
Results: In the 237 MC twin pregnancies the median discordance in birth weight was 8.0% (range 0–42.2%). There was no significant association between discordance in either CRL or NT and discordance in birth weight (P=0.116 and P=0.332). In pregnancies with abnormal DV flow in at least one of the fetuses the median discordance in birth weight was higher than in those with normal DV flow in both twins (13.2% vs. 7.8%, P=0.006).
Conclusions: In uncomplicated MC twin pregnancies, abnormal DV flow in at least one of the fetuses is associated with a higher discordance in birth weight than in those with normal flow in both fetuses.
Keywords: Crown-rump length; ductus venosus flow; growth discrepancy; monochorionic twins; nuchal translucency
Received: 2011-1-2
Accepted: 2011-5-11
Published Online: 2011-06-10
Published Online: 2011-06-11
Published in Print: 2011-07-01
©2011 by Walter de Gruyter Berlin Boston
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Keywords for this article
Crown-rump length;
ductus venosus flow;
growth discrepancy;
monochorionic twins;
nuchal translucency
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- Characterization of discriminatory urinary proteomic biomarkers for severe preeclampsia using SELDI-TOF mass spectrometry
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