Coronial
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Coroner's Finding: DANN Kathleen Felicity

Deceased

Kathleen Felicity Dann

Demographics

38y, female

Date of death

2000-03-17

Finding date

2002-05-23

Cause of death

mixed drug toxicity (lethal level of dothiepin, potentially lethal level of morphine, therapeutic levels of benzodiazepines)

AI-generated summary

A 38-year-old woman with long-standing heroin and benzodiazepine dependence died from mixed drug toxicity following injection of heroin. Her GP had prescribed multiple benzodiazepines (diazepam, oxazepam, temazepam) and dothiepin (a tricyclic antidepressant) over four years, despite knowing she continued heroin use. The coroner found the prescribing approach 'unduly passive' and 'risky'. The combination of high-dose benzodiazepines and tricyclic antidepressants with ongoing heroin use significantly increased overdose risk through central nervous system and respiratory depression. Key clinical lessons: GPs managing poly-substance users should avoid maintaining multiple benzodiazepines without active dependency reduction; tricyclic antidepressants should be avoided with benzodiazepines in heroin users; specialist referral is preferable to unsupervised community prescribing of high-risk drug combinations.

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

Specialties

general practiceaddiction medicineforensic medicine

Error types

medicationdiagnosticsystem

Drugs involved

heroindiazepamtemazepamoxazepamdosulepindosulepinflunitrazepamdiazepamserepaxmorphinecodeine

Clinical conditions

opioid dependencebenzodiazepine dependencepoly-substance abuseopioid toxicitymixed drug toxicityrespiratory depression

Contributing factors

  • prescription of multiple benzodiazepines without active dependency reduction strategy
  • prescription of tricyclic antidepressant (dothiepin) in context of benzodiazepine and heroin co-use
  • lack of specialist referral despite complex poly-substance abuse
  • unduly passive clinical approach to managing substance dependence
  • failure to maintain therapeutic advantage or implement structured treatment plan
  • continued heroin use not adequately addressed
  • absence of methadone maintenance program despite relapse to heroin

Coroner's recommendations

  1. Dr T. should review his therapeutic approach to poly-substance abusers, including deciding whether to maintain a therapeutic relationship if it is no longer therapeutic
  2. Complex and challenging substance abuse cases should be referred to specialised treatment centres such as Warinilla rather than managed in general practice alone
  3. GPs should establish clear therapeutic goals and actively work to reduce dependency on benzodiazepines rather than passively maintaining prescriptions
  4. Prescribing should follow structured supervision protocols with single-doctor oversight and monitoring
  5. Tricyclic antidepressants should not be prescribed with benzodiazepines in patients with ongoing heroin use due to risk of severe central nervous system depression
Full text
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Source and disclaimer

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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