Spontaneous sIUFDs
For spontaneous sIUFDs (n=22), the median gestation at first sIUFD was
24 weeks (IQR: 11 weeks) with the latest gestation a sIUFD was diagnosed
at 36 weeks (Table 2).
Surviving co-twin
outcomes
Figure 1 summarises the outcomes.The outcome data for the surviving
co-twin was missing in 11/81 cases (14%). 8 of the 11 cases were
reported by a Fetal Medicine Centre who had treated complications, but
the referring hospital where they received their ongoing maternity care
did not provide outcome data, thus the data presented are the outcomes
of 70 surviving co-twins. The perinatal death rate of the co-twin was
14% (10/70): there were 8 prenatal deaths and 2 neonatal deaths,
equating to 62/70 livebirths (88.6%). The surviving co-twin miscarried
in 3 pregnancies. There were 2 stillbirths both following FLA for TTTS
in the second trimester. There were no intrapartum stillbirths. Three
pregnancies with TTTS had further complications of the condition
resulting in a decision for selective termination of pregnancy (e.g.
abnormal CNS imaging, severe IUGR). There were 2 neonatal deaths due to
extreme prematurity following fetal therapy.