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Coroner's Finding: Bishop, Sarah Victoria

Deceased

Sarah Victoria Bishop

Demographics

71y, female

Date of death

2015-10-27

Finding date

2016-10-17

Cause of death

Multiple injuries sustained in a motor vehicle crash

AI-generated summary

Sarah Victoria Bishop, aged 71, died from multiple injuries sustained in a motor vehicle crash on 27 October 2015. Her car crossed onto the wrong side of the Channel Highway in Tasmania and collided head-on with an oncoming vehicle. Toxicological analysis revealed dextromethorphan (from over-the-counter Robitussin cough mixture) at greater than therapeutic levels. Mrs Bishop was a slow metaboliser of this drug—a condition affecting 5–10% of the Caucasian population—causing impaired driving ability with inattention, confusion, and slowed judgment. The coroner was satisfied this was the most likely cause of her driving on the incorrect side of the road for 600 metres before impact. The coroner found the medication's warning inadequate given the magnitude of risk and recommended stronger warnings on the product box and bottle about potential driving impairment.

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

Contributing factors

  • Slow metabolism of dextromethorphan (pharmacogenetic condition affecting 5–10% of Caucasian population)
  • Dextromethorphan at greater than therapeutic levels in bloodstream
  • Over-the-counter cough medication (Robitussin) taken for cold and cough
  • Impaired driving ability (inattention, confusion, impaired memory, slowed judgment and reaction speed)
  • Inadequate warning on medication about risk of driving impairment

Coroner's recommendations

  1. Remind drivers of the dangers of using cough and cold medicine while driving, particularly those who are poor metabolisers of the active drug
  2. Robitussin should carry a warning on both the box and bottle about the risk of adverse impact on driving capability
Full text

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