Medication error during joint replacements leaves at least one patient paralysed
At least four patients who underwent joint-replacement surgery at Ascension Saint Thomas Midtown in Nashville late last week were harmed after a drug mix-up in the operating room, according to investigative reporting. One patient is reported to be permanently paralysed from the chest down.
The hospital issued a brief statement saying leaders have met with affected families and connected them with spiritual-care teams and ongoing resources. Hospital leadership did not provide technical details of how the error occurred, but reporting indicates a pharmacy mistake resulted in syringes intended to contain a local anaesthetic being filled with a different, potentially lethal drug.
"Our hearts are with the four patients and their families impacted by this event," the hospital said in its statement.
What investigators say happened
NewsChannel 5 Investigates reported that instead of the anaesthetic bupivacaine, syringes used for epidural pain control were reportedly filled with potassium. Potassium, in high concentrations, can cause cardiac arrest; it is a substance sometimes used in lethal injections.
According to the reporting, the incident unfolded during joint replacement procedures last Friday. One family told investigators a patient who went in for a knee replacement came out of the procedure permanently paralysed from the chest down. The hospital confirmed families of the four affected patients have been contacted and offered support.
Regulatory response and transparency questions
Hospitals are required to report serious safety events to regulators where they occur. Ascension said it reported the event to state authorities and those regulators have confirmed they are investigating.
The hospital’s public comments have been limited. In its statement, the facility’s president and CEO expressed sorrow and said leadership had met with each family to offer support, spiritual care and access to appropriate resources and ongoing care.
- Number of patients affected: at least 4
- Serious harm reported: at least one patient permanently paralysed
- Reported medication error: syringes intended for bupivacaine reportedly filled with potassium
Why St. Thomas readers should care
Although the incident occurred in Nashville, the case has immediate relevance for communities in Ontario that rely on surgical and pharmacy services. Medication handling, labelling and pharmacy-to-operating-room processes are universal elements of surgical care. When errors of this nature occur, they prompt patients and families to ask how hospitals prevent, detect and correct such mistakes.
Local hospitals and surgical centres — including those serving St. Thomas and surrounding Elgin County — follow strict protocols for medication storage, preparation and verification. Still, serious events elsewhere can spur local institutions to review their own safeguards. Regulators and hospital administrators typically examine:
| Area | Typical focus in reviews |
|---|---|
| Pharmacy processes | Label verification, dispensing safeguards, segregation of look‑alike/sound‑alike drugs |
| Operating-room checks | Time‑outs, syringe labelling, dual verification before injection |
| Incident reporting | Timeliness of notification to regulators and families, transparency of findings |
Patients and families preparing for surgery in St. Thomas can reasonably ask their care teams about the steps in place to prevent medication errors, including how anaesthetics are prepared and verified immediately before they are administered.
Next steps and what to watch for
State investigators in the U.S. are actively probing the Nashville incident. Their findings — and any recommendations or regulatory actions that follow — will be closely watched by health systems and patient-safety advocates beyond the U.S. Those outcomes may lead to changes in pharmacy practice, labelling requirements, or intraoperative verification procedures.
For readers here, the most immediate actions are to seek clear answers from local providers when facing surgery, confirm consent discussions address risks and ask how medications will be prepared and checked. Hospital leaders in St. Thomas may also be asked to outline local safeguards publicly if community concerns rise.
This newsroom will monitor official findings from investigators in Tennessee and any responses from Canadian health authorities or local hospitals prompted by the case.
