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Coroner's Finding: Arnold, Derek William

Deceased

Derek William Arnold

Demographics

51y, male

Date of death

2019-01-07

Finding date

2020-06-12

Cause of death

acute methadone toxicity

AI-generated summary

A 51-year-old man died from acute methadone toxicity with a blood level of 2.5 mg/L (within fatal range). He was prescribed methadone tablets by his GP for chronic pain management since at least March 2014. Investigation revealed 35 breaches of the Poisons Act 1971 by the prescribing GP, predominantly (23 cases) involving prescription supplies where prior authorities had expired without renewal. The coroner could not determine if the overdose was deliberate or accidental. Key clinical lesson: strict adherence to methadone regulatory requirements is essential, as non-compliance carries serious risk of fatal toxicity. Prescribers must ensure prior authorities are renewed before expiry and maintain meticulous compliance with legislation governing this potent opioid.

AI-generated summary and tagging — may contain inaccuracies; refer to original finding for legal purposes. Report an inaccuracy.

Specialties

general practicepain medicineaddiction medicine

Error types

medicationsystem

Drugs involved

methadonemorphine

Clinical conditions

chronic painopioid toxicitymethadone overdose

Contributing factors

  • 35 breaches of Poisons Act 1971 by prescribing GP
  • 23 breaches relating to expired prior authorities without renewal
  • prescription of methadone in tablet form without adequate regulatory oversight
  • chronic pain requiring opioid management
  • stress from pending criminal allegations

Coroner's recommendations

  1. Continue emphasis on strict compliance with Poisons Act 1971 requirements for methadone prescription
  2. Strengthen monitoring and enforcement of prior authority renewal procedures
  3. Consider further education for prescribers regarding methadone regulatory requirements
Full text

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This page reproduces or summarises information from publicly available findings published by Australian coroners' courts. Coronial is an independent educational resource and is not affiliated with, endorsed by, or acting on behalf of any coronial court or government body.

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