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A Murine Model of Subarachnoid Hemorrhage
Published on: November 21, 2013
Diffuse Alveolar Hemorrhage Caused by Warfarin after Rifampicin Discontinuation
Takashige Kiyota1, Seiji Shiota1, Ryosuke Hamanaka1
1Department of General Medicine, Almeida Memorial Hospital, Oita 870-1195, Japan.
Abstract:
An 83-year-old man under warfarin therapy presented for assessment of prolonged prothrombin time and cough. High-resolution computed tomography findings of the chest showed diffuse alveolar hemorrhage. His international normalized ratio (INR) was 11.89. He had been treated with rifampicin for a persistent infection, but this had been discontinued about two months before admission. Rifampicin suppresses the anticoagulant activity of warfarin, which can lead to a need for increased doses of warfarin to achieve and maintain a therapeutic INR. More frequent INR monitoring is needed even after discontinuing rifampicin.
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