title: Fusidic acid induced acute immunologic thrombocytopenia.
abstract: Fusidic acid is used in hospitals as second-line therapy for multidrug-resistant staphylococcal infections. We report the first fully documented case of fusidic acid induced thrombocytopenia, in a 48-year-old patient. The thrombocytopenia was abrupt and severe but resolved spontaneously 7 d after drug withdrawal. The thrombocytopenia transiently relapsed 6 d later, when fusidic acid was reintroduced. Haemorrhagic signs were observed, but no severe bleeding occurred. Platelet transfusions failed to increase the platelet count. We detected an IgG platelet antibody in the patient's serum, that specifically recognized platelet glycoprotein IIb/IIIa only in the presence of fusidic acid. Fusidic acid induced thrombocytopenia should be considered as a possible cause for the thrombocytopenia frequently seen in the intensive care setting.
authors.affiliation: Laboratoire d'Immunologie Leuco-plaquettaire, Centre de Transfusion, Hopital Henri Mondor, Créteil, France.
authors.forename: N
authors.initials: N
authors.lastname: El-Kassar
authors.forename: P
authors.initials: P
authors.lastname: Kalfon
authors.forename: P
authors.initials: P
authors.lastname: Fromont
authors.forename: C
authors.initials: C
authors.lastname: Vezinet
authors.forename: B
authors.initials: B
authors.lastname: Godeau
authors.forename: N
authors.initials: N
authors.lastname: Duedari
authors.forename: P
authors.initials: P
authors.lastname: Bierling
mesh_terms: D000208:Acute Disease; D000900:Anti-Bacterial Agents / Q000009:adverse effects*; D018432:Drug Resistance, Multiple; D005672:Fusidic Acid / Q000009:adverse effects*; D006801:Humans; D008875:Middle Aged; D013921:Thrombocytopenia / Q000139:chemically induced*
chemical_list: D000900:Anti-Bacterial Agents; D005672:Fusidic Acid