IVIG-Associated Maternal Pancytopenia during Treatment for Neonatal Alloimmune Thrombocytopenia.

Treatment for neonatal alloimmune thrombocytopenia (NAIT) primarily involves maternal administration of intravenous immunoglobulin (IVIG) therapy and prednisone according to protocols based on risk stratification. While IVIG is generally well tolerated, hematologic side effects are a potential complication.  We present the successful management of a rare complication of maternal pancytopenia following standard IVIG treatment. Diagnosis was made during routine obstetric exams. Management included reducing IVIG dosage and adding daily prednisone. Additionally, infusion Lots possibly associated with the event were identified and avoided. Interventions resulted in the resolution of pancytopenia and the birth of a healthy infant without thrombocytopenia.  Pancytopenia is a rare complication of IVIG treatment in women with pregnancies complicated by NAIT. Serial complete blood counts at the time of treatment would allow for early detection and timely management of the patient. Additionally, limiting the number of infusion Lots may decrease the chance of the described complications.