Coronial
NSWhome

Inquest into the death of Yongxing Wang

Deceased

Yongxing Wang

Demographics

79y, male

Coroner

Decision ofDeputy State Coroner Ryan

Date of death

2014-08-25

Finding date

2018-02-23

Cause of death

hypoxic brain injury due to cardio-respiratory arrest caused by opioid toxicity

AI-generated summary

Yongxing Wang, 79, died from hypoxic brain injury caused by opioid toxicity from combined morphine and oxycodone. After a minor back injury on 21 August, he received a cortisone injection on 22 August with complications. Dr L. administered two doses of morphine (30mg and 20mg) intramuscularly at home on 23 August without adequate documentation or monitoring. Wang showed clinical somnolence from 5pm that day—an early warning sign of respiratory depression. The expert consensus was these morphine doses were inappropriate given Wang's age (79), opioid naivety, concurrent oxycodone use, simultaneous use of other medications, lack of clinical assessment documentation, and absence of patient safety monitoring. No adverse findings regarding Dr L.'s initial management on 21 August were made. The critical issues were inadequate dose selection for elderly opioid-naive patients receiving home-based injections, absence of documentation of clinical assessment and drug administration, and failure to observe and respond to early signs of opioid toxicity.

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

Specialties

general practiceradiologypain medicineintensive caretoxicology

Error types

medicationcommunicationsystem

Drugs involved

morphineoxycodonedexamethasonelidocainecelecoxibpregabalinoxycodone

Clinical conditions

opioid toxicitycardio-respiratory arresthypoxic brain injuryrespiratory depressiondegenerative spinal diseasecervical foraminal canal stenosisischaemic heart diseasecoronary artery disease

Procedures

CT scan of lumbar spinecortisone injection (l5 nerve root)intramuscular morphine injectioncardiopulmonary resuscitation

Contributing factors

  • inappropriate morphine dosing in elderly opioid-naive patient
  • administration of morphine at home without adequate patient monitoring
  • concurrent use of morphine and oxycodone with additive effects
  • absence of clinical assessment documentation prior to morphine administration
  • absence of documentation of morphine doses administered
  • failure to respond to early signs of opioid-induced respiratory depression (somnolence)
  • home-based administration lacking patient safety mechanisms
  • opioid administered to patient already sedated from earlier dose

Coroner's recommendations

  1. Transcript of inquest forwarded to Executive Officer of Medical Council of NSW pursuant to section 151A(2) of Health Practitioner Regulation National Law (NSW)
Full text

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