title: Thrombotic stroke associated with the use of porcine factor VIII in a patient with acquired haemophilia.
abstract: Porcine factor VIII (pFVIII), which is used to control bleeding in patients with congenital or acquired haemophilia who have high-titre neutralizing antibodies to human FVIII, is not known to increase the risk of arterial or venous thrombosis. We have recently encountered a patient with acquired haemophilia who developed a thrombotic left middle cerebral artery distribution stroke while being treated with pFVIII. To our knowledge, this is the first such reported thrombotic event. We speculate that platelet activation induced by pFVIII may have contributed to thrombosis and suggest that pFVIII be used with caution in elderly patients with pre-existing cardiovascular risk factors.
authors.affiliation: Division of Hematology, Oncology and Transplantation, Department of Medicine, University of Minnesota Medical School, Minneapolis 55455, USA.
authors.forename: A A
authors.initials: AA
authors.lastname: Ashrani
authors.forename: M T
authors.initials: MT
authors.lastname: Reding
authors.forename: E W
authors.initials: EW
authors.lastname: Greeno
authors.forename: A
authors.initials: A
authors.lastname: Shet
authors.forename: N S
authors.initials: NS
authors.lastname: Key
mesh_terms: D000368:Aged; D000818:Animals; D001172:Arthritis, Rheumatoid; D001323:Autoantibodies / Q000097:blood; D001327:Autoimmune Diseases / Q000150:complications / Q000188:drug therapy / Q000276:immunology; D005169:Factor VIII / Q000008:administration & dosage / Q000009:adverse effects* / Q000276:immunology; D017809:Fatal Outcome; D006467:Hemophilia A / Q000150:complications* / Q000188:drug therapy / Q000276:immunology / Q000473:pathology; D006801:Humans; D020767:Intracranial Thrombosis / Q000139:chemically induced* / Q000209:etiology; D008297:Male; D013552:Swine
chemical_list: D001323:Autoantibodies; D005169:Factor VIII