Complications of methotrexate toxicity in a man with chronic renal impairment, chronic obstructive pulmonary disease, cardiomegaly and ischaemic heart disease
AI-generated summary
A 77-year-old man with chronic kidney disease, COPD, and mild cardiac failure died from methotrexate toxicity after a GP prescribed it at an inappropriate daily dose (5mg daily) for psoriasis without baseline blood tests. The dispensing pharmacist recognized the dangerous dose, called the doctor, but ultimately dispensed the medication despite her severe concerns. Within days the patient developed toxicity symptoms, was hospitalized, and died of multiorgan failure. The coroner found the death entirely preventable. Critical failures included: the GP's failure to recognize contraindications (impaired renal function), failure to perform baseline testing despite knowing it was standard, inadequate drug reference review (only glanced at MIMS), and failure to heed the pharmacist's explicit warning. The pharmacist, despite 35 years' experience and clear safety concerns, felt constrained by perceived power imbalance with the doctor. Key lesson: methotrexate initiation requires specialist evaluation and baseline bloods; pharmacists must be empowered to refuse dispensing when safety concerns are unaddressed; and stronger safeguards are needed around dangerous drugs.
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Specialties
general practicepharmacydermatologynephrologyemergency medicine
Inappropriate prescribing of methotrexate at daily dose by GP without baseline blood tests
GP's failure to recognize contraindications including severe renal impairment (eGFR 11)
GP's inadequate review of drug reference material (only glanced at MIMS)
GP's failure to heed pharmacist's explicit warning of concern
Pharmacist's failure to refuse to dispense despite recognized safety concerns
Pre-existing chronic renal impairment and other comorbidities unappreciated
Methotrexate prescribed for non-life-threatening condition (psoriasis)
Lack of baseline renal and liver function tests prior to dispensing
Coroner's recommendations
Commonwealth Department of Human Services should consider designating methotrexate as an authority required medication to reduce risk of inappropriate prescribing by GPs
MIMS Australia, Pfizer Australia Pty Ltd, and Hospira Australia Pty Ltd should review methotrexate prescribing advice for psoriasis to reflect current clinical practice and clearly mitigate risk of inappropriate daily dosing
Commonwealth Department of Health should ensure Product Information for methotrexate on TGA website reflects current clinical practice and evidence
RACGP should review information on its website about methotrexate and psoriasis to clarify that GPs should never initiate methotrexate therapy
Pharmacy Board of Australia and Pharmaceutical Society of Australia should consult to provide further guidance and support to pharmacists to enable them to discharge duty of care in situations of concern about safety and appropriateness of prescribed medication
Pharmaceutical Society of Australia should review its clinical intervention guidelines and consider circumstances where pharmacists should provide copies of Clinical Intervention Forms to patient and/or prescriber
Medical profession should send important medical information directly to patients as well as their GPs to ensure information is not lost when patients change doctors
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