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Br J Obstet Gynaecol. 1997 Oct;104(10):1203-7.

The hidden mortality of monochorionic twin pregnancies.

Author information

1
Harris Birthright Research Centre for Fetal Medicine, King's College Hospital Medical School, Denmark Hill, London, UK.

Abstract

In an ultrasound screening study at 10 to 14 weeks of gestation for measurement of fetal nuchal translucency thickness there were 102 monochorionic and 365 dichorionic twin pregnancies. In the monochorionic compared with the dichorionic pregnancies there was a higher rate of fetal loss before 24 weeks of gestation (12.2% versus 1.8%), perinatal mortality (2.8% versus 1.6%), prevalence of delivery before 32 weeks (9.2% versus 5.5%), and prevalence of birthweight below the 5th centile in both twins (7.5% versus 1.7%). However, the proportion of pregnancies with a birthweight discordancy of more than 25% was similar in the two groups (11.3% versus 12.1%).

PMID:
9333002
[Indexed for MEDLINE]

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