In monochorionic twin pregnancies, death of one twin is
recognised as being an important risk factor for the
surviving co-twin having cerebral palsy. The death of one
twin may impair the neurological development of the
survivor throughout gestation .
Meta-analysis of four studies has demonstrated that the
antenatal death of a co-twin is associated with a six-fold
increase in rate of cerebral palsy per twin confinement, or
an 11-fold increase in rate per child.
The live-born co-twin of a foetus that died in utero is at
increased risk of cerebral impairment, the overall risk being
20%