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Difenacoum poisoning as a cause of haematuria

G P Butcher1, M J Shearer, A D MacNicoll

  • 1Ealing General Hospital, Southall, Middlesex, UK.

Human & Experimental Toxicology
|November 1, 1992
PubMed

Insights

A man experienced severe bleeding after ingesting difenacoum, a potent rodenticide. Prolonged vitamin K1 treatment is crucial for managing superwarfarin overdose, as highlighted by this case.

Area of Science:

  • Toxicology
  • Internal Medicine
  • Hematology

Background:

  • Rodenticides, particularly 'superwarfarins' like difenacoum, pose a risk of accidental or intentional overdose.
  • Anticoagulant rodenticides interfere with vitamin K metabolism, leading to impaired blood clotting.

Observation:

  • A patient presented with significant hematuria and a markedly prolonged prothrombin time.
  • Serum analysis confirmed a high concentration of difenacoum, indicative of a substantial overdose.

Findings:

  • The clinical presentation and laboratory results strongly correlated with difenacoum toxicity.
  • The case underscores the severe coagulopathy that can result from superwarfarin ingestion.

Implications:

  • This case highlights the critical need for prompt diagnosis and aggressive management of difenacoum overdose.
  • Extended treatment with vitamin K1 is essential to reverse the anticoagulant effects and prevent life-threatening hemorrhage.
  • Awareness among healthcare providers regarding superwarfarin toxicity and its management is vital.

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