A 35-year-old woman with influenza A-associated thrombotic thrombocytopenic purpura

作者：Jonsson Maria K; Hammenfors Daniel; Oppegaard Oddvar; Bruserud Oystein; Kittang Astrid Olsnes^*

来源：Blood Coagulation & Fibrinolysis, 2015, 26(4): 469-472.

DOI：10.1097/MBC.0000000000000255

• influenza A
• plasmapheresis
• thrombotic thrombocytopenic purpura

A previously healthy 35-year-old woman presented with severe thrombotic thrombocytopenic purpura (TTP) affecting several organs and concomitant influenza A infection. On admission to hospital, haemoglobin was 5.4 g/dl, platelet count 6 x 109/l, Schistocyte count in peripheral blood 5%, and throat swab positive for influenza A RNA. The patient was treated with antiviral medication and transfusions of fresh frozen plasma before plasma exchange therapy with excellent response. Plasmaphereses were attenuated after 5 days, resulting in TTP relapse 3 days later. A disintegrin and metalloproteinase with a thrombospondin type 1 motif, member 13 (ADAMTS13) protein was very low (<0.04 U/l) and anti-ADAMTS13 elevated (>2 U/l), consistent with acquired TTP. Platelet counts normalized after five additional plasma exchanges and oral corticosteroids. Antinuclear antibodies and subgroup anti-Ro/Sjogren's syndrome A antigen (SSA) were detected in serum and have remained borderline-elevated, although evaluation during TTP, recovery and follow-up have lacked clinical manifestations of connective tissue disease. Influenza A infection induced production of ADAMTS13 inhibitor, which resulted in TTP in a patient with circulating antinuclear antibodies, lacking other manifestations of connective tissue disease.

• 出版日期2015-6
• 单位河北医科大学