Fetofetal transfusion syndrome in identical twin pregnancies

Circulatory failure between fetuses in identical multiple fetal pregnancies is called fetofetal transfusion syndrome. If the syndrome is suspected or diagnosed, pregnancy monitoring and treatment is performed at the fetal examination unit.

Circulatory failure between fetuses in monocorial, or identical, multiple fetal pregnancies is called Fetofetal Transfusion Syndrome (TTTS). The syndrome is caused by the interconnected blood vessels growing in the common split placenta between the fetuses. In Finland, less than 1% of all pregnant women who are expecting identical twins. Of these, only 10% of fetuses develop TTTS.

Multiple fetal pregnancies, which show a significant difference in fetal growth rate between pregnancy monitoring and treatment, are performed in fetal examination units.

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