Objective: To investigate whether fetal platelets in immune thrombocyt
openia purpura (ITP) may be predicted by antepartum assessment, Method
s: A prospective analysis was conducted of 28 pregnant women with ITP
out of 8,056 deliveries, Of the 28 patients, 13 Were evaluated by feta
l scalp sampling and 11 Were evaluated by percutaneous umbilical blood
sampling (PUBS), Results: The mean fetal and maternal platelet counts
prior to delivery were 146,000 and 176,000, respectively. The mean fe
tal and maternal platelet counts after delivery were 245,000 and 149,0
00, respectively, Fetal cord platelet counts could not be predicted by
maternal platelet count, the presence/absence of maternal direct/indi
rect anti-platelet antibodies, steroid therapy, or history of splenect
omy, PUBS for fetal platelet assessment correlated well with fetal pos
tdelivery counts. Conclusions: Patients with ITP rarely exhibit compli
cations. No antepartum characteristic enhances reliable prediction of
neonatal outcome. Method of delivery should be based on obstetric guid
elines.