Coronial
VIChospital

Finding into death of David Greville Edward Horne

Deceased

David Greville Edward Horne

Demographics

47y, male

Coroner

Coroner Audrey Jamieson

Date of death

2023-12-28

Finding date

2025-10-13

Cause of death

Unascertained; most likely cardiac arrhythmia possibly triggered by obstructive sleep apnoea, coronary atherosclerosis, or altered autonomic physiology in context of schizoaffective disorder and psychotropic medications

AI-generated summary

David Horne, a 47-year-old man with bipolar disorder, schizoaffective disorder, and severe obstructive sleep apnoea, died suddenly at Maroondah Hospital while under compulsory psychiatric treatment. He experienced two episodes of respiratory distress on 5 and 8 December 2023, likely exacerbated by sedative medications (benzodiazepines and antipsychotics) in the context of his sleep apnoea. After benzodiazepines were ceased, no further respiratory events occurred until his unexpected death on 28 December. Autopsy revealed no definitive cause, but cardiac arrhythmia was considered most likely, possibly triggered by underlying sleep apnoea and cardiac atherosclerosis. Clinical lessons include careful balancing of sedative medications in patients with sleep apnoea, timely involvement of respiratory specialists (which was appropriate here), and recognition that sudden unexplained deaths in schizoaffective disorder patients may reflect altered autonomic physiology. The coroner found care was reasonable and appropriate.

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

Specialties

psychiatryrespiratory medicineemergency medicineintensive careforensic medicine

Drugs involved

diazepamolanzapinedroperidolchlorpromazinesodium valproatepaliperidoneflupenthixolhydroxyrisperidone

Clinical conditions

schizoaffective disorderbipolar disorderobstructive sleep apnoeasubstance use disorderrespiratory failurecardiac arrhythmiacoronary atherosclerosisacute bronchopneumonia

Procedures

non-invasive ventilation (BiPAP)CPRautopsypost-mortem CT scan

Contributing factors

  • Severe obstructive sleep apnoea
  • Non-compliance with CPAP
  • Sedative medications (benzodiazepines, antipsychotics) causing respiratory depression
  • Schizoaffective disorder and acute psychiatric illness
  • Coronary atherosclerosis
  • Episodes of respiratory distress during admission
Full text

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.

Content may be incomplete, reformatted, or summarised. Some material may have been redacted or restricted by court order or privacy requirements. Always refer to the original court publication for the authoritative record.

Copyright in original materials remains with the relevant government jurisdiction. AI-generated summaries and tagging are for educational purposes only, may contain inaccuracies, and must not be treated as legal documents. We welcome feedback for correction — report an inaccuracy here.