What Happened

Brianna Duffy, a registered nurse working at facilities in Danvers and Amesbury, Massachusetts, tampered with morphine prescribed to an 89-year-old hospice patient, diluting it to just 26% of the prescribed concentration.

On March 17–18, 2019, Duffy withdrew morphine sulfate from the patient's prescribed vials and bottles and replaced the drug with another liquid to conceal the theft. The tampering left a dying patient receiving a fraction of the analgesic they were prescribed, converting diversion into a direct assault on end-of-life care.

Duffy was indicted on charges of tampering with a consumer product and acquiring a controlled substance by fraud or deception. She was sentenced on September 14, 2020, to five years in federal prison followed by three years of supervised release.

What Went Wrong

This case illustrates how diversion in long-term care and hospice settings attacks the most vulnerable patients, and how lightly staffed facilities can fail to notice substitution. The dilution was severe enough that the patient would have experienced markedly reduced pain relief, yet the supply itself was not examined until the criminal investigation. Key failure points included:

  • A single nurse had access to patients' personal medication supplies with no second-person check on withdrawal, dilution, or return of the product.
  • No verification existed that medication removed from a patient's supply matched what was returned, so a liquid substitution was invisible to casual inspection.
  • Patient response to medication was not systematically reconciled against documented doses — the patient's pain management deteriorated without triggering an investigation of the supply itself.
  • Multi-dose vials and patient-specific bottles created repeated opportunities to remove drug without an immediate count discrepancy.
  • There was no independent inventory or supply inspection at the facility level that would have caught the dilution, and the tampering went unnoticed until law enforcement and regulatory scrutiny began.

How It Could Have Been Prevented

  • Require two-person witnessing for any withdrawal from a patient's personal controlled substance supply, with both parties documenting the transaction.
  • Secure patient-specific controlled substances and log every access, reconciling the log against the medication administration record.
  • Inspect patient medication supplies for seal, color, and volume anomalies whenever a concern is raised or a dose appears ineffective.
  • Reconcile documented administration against dispensed quantities on a regular schedule, escalating any unexplained gap.
  • Train staff to recognize and report signs of ineffective analgesia as a potential patient-safety and diversion indicator, not just a clinical issue.

Related Guidance

Sources