LAW

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Duncan v. Medical Practitioners’ Disciplinary Committee (1986) - Study Guide
Core Principle: A breach of patient confidentiality is only justified if the information is disclosed to the appropriate authorities or individuals who have a legitimate need to know.
Key Facts:
  • A bus driver had a triple bypass and was cleared to drive by his surgeon.
  • The bus driver's GP disagreed and:
    • Requested the bus driver's license be withdrawn.
    • Warned the bus driver's passengers about the perceived danger.
  • The Medical Practitioners' Disciplinary Committee found the GP guilty of professional misconduct (breach of confidence).
  • The GP sought judicial review of the committee's decision.
Court Decision (New Zealand High Court):
  • The application for judicial review was refused. The GP was found to have breached confidentiality inappropriately.
Key Takeaways & Implications:
  • Public Interest Exception: The court acknowledges that "public interest" can justify breaching confidentiality.
  • Discrimination in Disclosure: Crucially, a doctor must be selective and responsible in who they inform. According to Jeffries J, the recipient should be a "responsible authority."
  • Appropriate Action: Informing the vehicle licensing authority would likely be justified (especially if the patient refuses to do so).
  • Relevance of Guidelines: The UK's General Medical Council (GMC) has detailed guidelines on confidentiality breaches. Following these guidelines strengthens the argument that a breach was justified (unless made in bad faith).
  • Good Faith: Even if guidelines are followed, a breach could still be deemed unjustified if done with malicious intent ("bad faith").
Study Questions:
  1. What specific actions did the GP take that led to the finding of professional misconduct?
  2. What is the central principle established in Duncan regarding breaches of patient confidentiality?
  3. Under what circumstances might breaching patient confidentiality be justified?
  4. Who should a doctor inform if they believe a patient poses a risk to public safety?
  5. Why is informing the vehicle licensing authority more appropriate than warning passengers directly?
  6. What role do professional guidelines (like those from the GMC) play in determining whether a breach of confidentiality is justified?
  7. How does "bad faith" affect the justification of a confidentiality breach?
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