Neonatal Alloimmune Thrombocytopenia With Amegakaryocytosis, B Lymphopenia, and Villitis

Neonatal alloimmune thrombocytopenia.

Fetal and neonatal alloimmune thrombocytopenia.

Fetal and neonatal alloimmune thrombocytopenia (FNAIT) is one of the major causes of both severe thrombocytopenia and intracranial haemorrhage in fetuses and term neonates. The incidence of FNAIT is estimated to be one in 1000-2000 births. FNAIT is caused by maternal immunoglobulin G alloantibodies, which cross the placenta and are directed against human platelet antigens (HPA) on fetal platele...

Fetal and neonatal alloimmune thrombocytopenia.

UNLABELLED Fetal and neonatal alloimmune thrombocytopenia (FNAIT) is the commonest cause of severe neonatal thrombocytopenia. FNAIT is usually suspected in neonates with bleeding or severe, unexplained, and/or isolated postnatal thrombocytopenia. Affected fetuses should be managed in referral centers with experience in the ante-natal management of FNAIT. Close collaboration is required between ...

Neonatal alloimmune thrombocytopenia: current considerations.

Some mothers produce antibodies to the platelet antigens of their fetuses. Exposure to these antigens may occur owing to prior transfusions or through feto-maternal hemorrhage during gestation or delivery. The sensitizing antigen is usually an epitope of one of the glycoproteins (GP) found on the platelet membrane. Specific GPs act as receptors for factors important in hemostasis, such as von W...

Fetal and neonatal alloimmune thrombocytopenia: prenatal interventions.

Fetal and neonatal alloimmune thrombocytopenia (FNAIT) is a potentially devastating condition, which may lead to intracranial haemorrhage (ICH) in the fetus or neonate, often with death or major neurological damage as consequence. In the absence of screening, preventive measures are only possible in the next pregnancy of women with an affected child. Controversy exists on the best intervention ...