3.8 Article

Zinc toxicosis in a cat associated with ingestion of a metal screw nut

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SAGE PUBLICATIONS LTD
DOI: 10.1177/20551169221136464

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Zinc toxicosis; haemolytic anaemia; liver; pancreatitis

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This is a case of zinc toxicosis in a cat that ingested a metal screw nut and exhibited related symptoms. After removal of the screw nut from the pylorus and supportive care, the cat recovered.
Case summary A 3-year-old female neutered domestic shorthair cat was presented for vomiting, inappetence and weight loss. The cat developed moderately regenerative anaemia, moderately increased alanine transaminase and alkaline phosphatase activities, hyperbilirubinaemia and prolonged activated partial thromboplastin time. Abdominal ultrasound identified gastric wall thickening and changes suggestive of pancreatitis. Gastroduodenoscopy identified a metal screw nut in the pylorus, which was removed with rat tooth forceps. Metal analysis and serum zinc concentration using leftover serum collected at admission were performed after screw nut removal. Serum zinc concentration was markedly elevated, confirming a diagnosis of zinc toxicosis. Metal analysis of the screw nut showed that the major metal component was zinc. The cat recovered after screw nut removal and supportive care. Clinical signs resolved and the serum zinc concentration reduced significantly after screw nut removal.

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