Prednisone Plus IVIg vs. Prednisone for ITP During Pregnancy

Prednisone po, 20mg per day for 4 weeks, if response (Plt 30-100×100\^g/L), gradually taper to the maintenance dose of 5-10mg per day until 6 weeks after delivery; if not response, gradually taper to withdrawal.

IVIg 400mg/kg (≤20g for the total dose) per day for 5 days, and repeated in the case of lack of response by day 14