Objective: To evaluate the long-term follow-up of surviving offspring after antenatal treatment for fetal or neonatal alloimmune thrombocytopenia (FNAIT).
Patients: Fifty children at risk of FNAIT were antenatally treated with maternal intravenous immunoglobulins (IVIG) (n=11), IVIG with intrauterine platelet transfusions (IUPT) (n=26) or IUPT alone (n=9). In four cases (n=4), only fetal blood sampling (FBS) was performed.