Diffuse Alveolar Hemorrhage Caused by Warfarin after Rifampicin Discontinuation.
Case Rep Med
; 2019: 4917856, 2019.
Article
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| MEDLINE
| ID: mdl-30809261
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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Case Rep Med
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2019
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Article