Introduction: Warfarin-related nephropathy (WRN) is a newly recognized entity, which is characterized by the occlusion of renal tubules by red blood cells following glomerular hemorrhage in a patient overexposed to warfarin (international normalized ratio>3).
Case report: We report a 70-year-old man with no previous renal condition who developed WRN when his INR was>12. He did not fully recover his previous renal function.
Conclusion: The diagnosis of WRN should be considered whenever INR exceeds 3 in patients exposed to warfarin, particularly in the presence of hematuria. Vitamin K is the only therapeutic option.
Keywords: Acute kidney injury; Anti-vitamine K; Coumadine; Insuffisance rénale aiguë; Vitamin K deficiency; Warfarin.
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