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Clinical outcomes after colchicine overdose: A case report
Mingjie Fu1,2, Jie Zhao1,2, Zhitao Li1,2
1Department of Surgical Intensive Care Unit, First Affiliated Hospital, College of Medicine, Zhejiang University.
Rationale:
Colchicine can inhibit cell division and intracellular transport in affected organs by fixing intracellular tubulin and preventing its polymerization into microtubules. A lethal dose of colchicine is considered to be 0.8 mg/kg. The wide distribution of colchicine through 70% of the body following an overdose makes it difficult to eliminate.
Patient Concerns:
A 56-year-old man with a clear history of colchicine overdose was admitted to our hospital nearly 40 hours after taking 12 mg (0.17 mg/kg) of colchicine. He had a history of gout and chronic kidney disease. As the disease progressed, he showed most of the clinical manifestations and pathological features of colchicine overdose.
Diagnoses And Interventions:
Colchicine overdose was clear, with symptoms of multiple organ failure including primary gastrointestinal failure, bone marrow hematopoietic inhibition, rhabdomyolysis, cardiac damage, hepatocyte damage. The patient developed secondary septic shock, renal failure, circulatory failure, and respiratory failure. We performed continuous renal replacement therapy and gastric lavage, and administered norepinephrine, frozen plasma, proton-pump inhibitors, adenosylmethionine, antibiotics, granulocyte colony stimulating factor, and total parenteral nutrition.
Outcomes:
The patient rapidly developed complete hematopoietic function inhibition, gastrointestinal failure, and cardiac damage 32 hours after admission. Sustained severe infection and circulatory instability caused a progressive deterioration of respiratory function. Tracheal intubation was performed but the patient continued to deteriorate, and death occurred approximately 132 hours after admission.
Lessons:
Excessive colchicine levels cause continuous organ damage due to extensive tissue distribution, eventually leading to multiple organ failure. Colchicine metabolism is delayed in patients with liver or kidney dysfunction, and even a low dose of colchicine may result in poisoning in these individuals. Early diagnosis and reduction of colchicine levels is critical to improve prognosis, and colchicine poisoning should be considered in patients with poor liver or kidney function even when the ingested dose is low.
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