What Happened
An intensive care unit nurse at Mercy Hospital in Ardmore, Oklahoma, stole fentanyl and hydromorphone intended for critically ill patients and replaced it with tap water before returning the vials to circulation.
Rebecca Elaine Holloway was employed in the ICU at Mercy Hospital in Ardmore. Between March and April 22, 2022, she removed pain medication from fentanyl and hydromorphone vials intended for ICU patients, refilled the empty vials with tap water, and returned the tampered vials to the hospital's controlled storage locker so they would be administered to other patients.
At her plea hearing on August 31, 2023, Holloway admitted she knew the medication was intended for patients in acute pain and distress, and that depriving them of it placed them at risk of death or bodily injury. She pleaded guilty to one count of tampering with consumer products following an investigation by the FDA's Office of Criminal Investigations and the Oklahoma Bureau of Narcotics. Investigators identified a roughly six-week window — March 1 to April 22, 2022 — during which ICU patients may have received a tampered dose.
What Went Wrong
An ICU nurse was able to substitute tap water for pain medication in a secure storage locker without detection until an outside investigation began. Key failures included:
- Vials returned to secure storage were not inspected for tampering — altered fill contents, broken seals, or discoloration — before being made available for the next patient.
- No routine potency or contamination testing existed to catch a vial that had been diluted to water before it reached a bedside administration.
- Access to the controlled storage locker was not restricted or monitored closely enough to prevent tampered vials from being placed back into circulation undetected.
How It Could Have Been Prevented
- Inspect all returned or partially used controlled-substance vials for tampering — fill level, seal integrity, color, and clarity — before they re-enter circulation.
- Require witnessed waste and witnessed return for any controlled substance not fully administered, documented immediately in the patient record.
- Restrict and log access to ICU controlled-storage lockers, and review access patterns for unusual frequency or timing.
- Train ICU staff to recognize signs of diverted or substituted medication, including patients who fail to achieve expected pain relief after administration.
Related Guidance
- Hospital Diversion Prevention Checklist — Self-assessment covering ICU and controlled-substance storage controls.
- 15 Red Flags of Drug Diversion — Behavioral and recordkeeping indicators of diversion by clinical staff.
- Waste Documentation Policies — Witnessed waste and documentation requirements for controlled substances.
- Investigation Playbook — Running an internal investigation when product tampering is suspected.