• JNMA J Nepal Med Assoc · Mar 2018

    Case Reports

    Medication Error- A Case Report of Misadventure with Methotrexate.

    • Anup Singh and Aru Chhabra Handa.
    • Department of Otorhinolaryngology and Head & Neck Surgery, Medanta- The Medicity, Gurugram, Haryana, India.
    • JNMA J Nepal Med Assoc. 2018 Mar 1; 56 (211): 711-715.

    AbstractMethotrexate is an antimetabolite drug with antineoplastic and immunomodulatory properties, useful as an antineoplastic agent in various haematological and solid tumours. MTX toxicity can occur because of accidental ingestion/overdose by the patient or because of prescription error. The toxic effects manifest as severe mucositis or as organ damage (bone marrow depression, renal/hepatic injury). The toxicity usually results from parenteral overdose or repeated chronic drug ingestion. Acute high dose ingestion does not result in MTX toxicity because of saturable absorption kinetics. We present a case of MTX toxicity occurring as a result of prescription error resulting in repeat daily dosing of the drug, and the challenges associated with the management of the same, in a patient with multiple comorbidities. The present case emphasizes on a note of caution on the part of the prescriber and the suggestions regarding the measures which can be taken to avoid MTX toxicity. Keywords: drug overdose; Methotrexate; mucositis; pancytopenia.

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