Mixed drug toxicity (pregabalin, oxycodone and mirtazapine)
AI-generated summary
A 47-year-old woman died from mixed drug toxicity involving pregabalin, oxycodone, and mirtazapine. She had chronic pain, anxiety, and depression, and attended a medical clinic frequently. Over five days before her death, she was prescribed escalating doses of oxycodone by two different doctors without SafeScript checks or Schedule 8 permits as legally required. She also accumulated excessive pregabalin from multiple clinicians across three months. Key clinical lessons: mandatory SafeScript checking for opioids must be performed before every prescription; oxycodone requires Schedule 8 permits; doctors must coordinate care when patients see multiple prescribers; pregabalin combined with benzodiazepines and opioids carries serious CNS depression risks. The coroner found this death was a missed opportunity—SafeScript compliance could have prevented it.
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Specialties
general practiceaddiction medicinepsychiatrypain medicine
chronic paindepressionanxietyopioid use disordersubstance use disordersuspected cervical spine malignancyC7 vertebral damageopioid toxicitymixed drug overdose
Contributing factors
Failure to check SafeScript before prescribing oxycodone
Failure to apply for Schedule 8 permit for oxycodone prescribing
Multiple prescribers issuing high-dose medications without coordination
Escalating oxycodone doses issued in five days by different doctors
Excessive pregabalin dispensed (1587mg daily vs 450-900mg directed)
Combination of CNS depressant drugs with synergistic effects
History of prescription medication misuse not adequately managed
Patient did not attend referral to addiction medicine specialist
Inadequate monitoring of medication accumulation across multiple providers
Coroner's recommendations
Checking SafeScript provides doctors and pharmacists with accurate prescribing information for targeted drugs to inform safe treatment decisions and improve clinical practice
Pregabalin should be included in drugs monitored by SafeScript system given evidence of abuse and potential for harm in combination with other CNS depressants
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