Effect of delivery mode on postnatal platelet count dynamics in neonates born to mothers with immune thrombocytopenia.

We aimed to determine the effect of delivery mode on postnatal platelet count dynamics in neonates born to mothers with immune thrombocytopenia (ITP). This single-center, retrospective study included 41 mothers with ITP and their 65 infants born by vaginal delivery (VD, n = 30) and cesarean section (CS, n = 35) between January 1997 and March 2022. The median difference in platelet counts from day 0 to day 2 (ΔPlt [D 0-2]) was significantly lower in the VD group (- 39 × 10/L, interquartile range [IQR]: - 47 to - 24 × 10/L) than the CS group (15 × 10/L, IQR: - 6.