Can discordance in CRL at the first trimester predict birth weight discordance in twin pregnancies?
-
Alina Weissmann-Brenner
,
Boaz Weisz
Abstract
Objective: To examine the correlation between measurements of crown rump length (CRL), nuchal translucency (NT), and birth weight in dichorionic (DC) and monochorionic (MC) twin pregnancies.
Methods: A retrospective analysis was performed on all twin term pregnancies delivered between 2001 and 2007 at the McGill University Health Center. Data collected included maternal age, CRL and NT measurement, results of glucose challenge test, birth weight and length, gestational age at delivery, and fetal gender.
Results: The study population comprised 792 fetuses: 94 MC/DA and 698 DC/DA. Maternal age, gestational age at delivery, birth weight, and birth length were all significantly higher for the DC group. Male fetuses had significantly higher NT and higher birth weight than female fetuses. Discordance in CRL was found to correlate with discordance in birth weight in the entire study population (P<0.0001, R=0.25), in the DC twins (P<0.0001, R=0.275), but not in MC twins (R=0.10, P=0.33). CRL discordance above the 90th percentile (>12%) predicted 14/40 pregnancies with birth weight discordance above the 90th percentile (>24%) [P<0.001, LR=4.1 (2.6–6.2)]. CRL discordance above the 95th percentile (>16%) predicted 5/21 pregnancies with birth weight discordance above the 95th percentile (>30%) [P<0.001, LR=5.5 (2.6–10.4)]. NT discordance was correlated with CRL discordance (R=0.15, P<0.0001), but not with birth weight, regardless of chorionicity or gender.
Conclusion: In twin pregnancies, CRL discordance in first trimester can predict discordance of more than 25% in neonatal birth weight.
©2012 by Walter de Gruyter Berlin Boston
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Artikel in diesem Heft
- Masthead
- Masthead
- Original Articles – Obstetrics
- Intravenous iron treatment in pregnancy: comparison of high-dose ferric carboxymaltose vs. iron sucrose
- Trophoblastic progranulin expression is upregulated in cases of fetal growth restriction and preeclampsia
- Can a customized standard for large for gestational age identify women at risk of operative delivery and shoulder dystocia?
- Can discordance in CRL at the first trimester predict birth weight discordance in twin pregnancies?
- Anxiety and deterioration of quality of life factors associated with recurrent miscarriage in an observational study
- Neonatal outcome in infants of patients with radical vaginal trachelectomy
- The prevalence of gestational diabetes in advanced economies
- First-trimester reference ranges for decidual thickness and its relation to progesterone levels
- Original Articles – Fetus
- Levels of cytokines in umbilical cord blood in relation to spontaneous term labor
- Survival and neonatal outcome after fetoscopic guided laser occlusion (FLOC) of twin-to-twin transfusion syndrome (TTTS) in Sweden
- Is it necessary to induce labor in cases of intrauterine growth restriction at term?
- Fetal myocardial peak systolic strain before and after intrauterine red blood cell transfusion – a tissue Doppler imaging study
- Delayed interval delivery in twin and triplet pregnancies: 6 years of experience in one perinatal center
- Original Articles – Newborn
- Rapid neonatal weight gain increases risk of childhood overweight in offspring of diabetic mothers
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