title: [Warfarin-related nephropathy: a case report].
abstract: BACKGROUND
  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).
  
  
  METHODS
  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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Urgences néphrologiques et transplantation rénale, hôpital Tenon, AP-HP, 4, rue de la Chine, 75020 Paris, France.
authors.forename: L
authors.initials: L
authors.lastname: Zerah
authors.affiliation: Anatomie-pathologie, hôpital Tenon, AP-HP, 4, rue de la Chine, 75020 Paris, France; UPMC Sorbonne Universités, 75006 Paris, France.
authors.forename: I
authors.initials: I
authors.lastname: Brochériou
authors.affiliation: Urgences néphrologiques et transplantation rénale, hôpital Tenon, AP-HP, 4, rue de la Chine, 75020 Paris, France; UPMC Sorbonne Universités, 75006 Paris, France.
authors.forename: P
authors.initials: P
authors.lastname: Galichon
authors.affiliation: Urgences néphrologiques et transplantation rénale, hôpital Tenon, AP-HP, 4, rue de la Chine, 75020 Paris, France.
authors.forename: J
authors.initials: J
authors.lastname: Peltier
authors.affiliation: Urgences néphrologiques et transplantation rénale, hôpital Tenon, AP-HP, 4, rue de la Chine, 75020 Paris, France; UPMC Sorbonne Universités, 75006 Paris, France. Electronic address: alexandre.hertig@tnn.aphp.fr.
authors.forename: A
authors.initials: A
authors.lastname: Hertig
mesh_terms: D058186:Acute Kidney Injury / Q000139:chemically induced* / Q000628:therapy; D000368:Aged; D000925:Anticoagulants / Q000008:administration & dosage / Q000009:adverse effects*; D006417:Hematuria / Q000139:chemically induced / Q000628:therapy; D006801:Humans; D008297:Male; D008508:Medication Errors; D006435:Renal Dialysis; D014859:Warfarin / Q000008:administration & dosage / Q000009:adverse effects*
chemical_list: D000925:Anticoagulants; D014859:Warfarin
keywords: Acute kidney injury; Anti-vitamine K; Coumadine; Insuffisance rénale aiguë; Vitamin K deficiency; Warfarin