An unexpected case of coumarin poisoning with coumatetralyl.
A healthy man in his 40s presented with a 1-month history of haemoptysis and was unexpectedly found to have an elevated international normalised ratio (INR). He denied any known exposures to anticoagulants. Testing for the possible aetiologies of a high INR revealed coumarin poisoning with coumatetralyl as the cause. The approach to an elevated INR and management and diagnosis of suspected coumarin poisoning is reviewed.
Department of Medicine, Queen's University, Kingston, Canada.
Amin
A
Kay
Leo
L
Chiu
Christopher A K Y
CA
Chong
D015110:4-Hydroxycoumarins / Q000506:poisoning*; D000328:Adult; D006801:Humans; D008297:Male
D015110:4-Hydroxycoumarins; C004699:coumatetralyl