Pharmacy error at Ascension Nashville hospital injures four joint replacement patients

A pharmacy error on August 14, 2026, at Ascension Saint Thomas Midtown hospital in Nashville left one joint replacement patient paralyzed and three others injured after they received potassium phosphate instead of a spinal anesthetic. Ascension apologized, implemented new safety protocols, and hired outside quality experts. The Tennessee Bureau of Investigation has launched a criminal probe into the incident, reviving national debates over whether healthcare workers should face criminal liability for honest medical errors.

Saint Thomas Midtown pharmacy error

• ▪A pharmacy error occurred at Ascension Saint Thomas Midtown hospital in Nashville, Tennessee, on August 14, 2026.
• ▪The pharmacy error at Ascension Saint Thomas Midtown hospital involved four joint replacement patients receiving potassium phosphate instead of their intended spinal anesthetic.

Potassium phosphate medication mix-up consequences

• ▪The medication mix-up at Ascension Saint Thomas Midtown hospital on August 14, 2026, caused adverse reactions in four joint replacement patients.
• ▪The medication mix-up at Ascension Saint Thomas Midtown hospital on August 14, 2026, left one joint replacement patient paralyzed.

Ascension safety protocol response

• ▪Ascension brought in outside quality experts to review and validate its corrective action plan following the August 14, 2026 pharmacy error.
• ▪Ascension implemented safeguards following the August 14, 2026 pharmacy error, including isolated storage for high-alert medications and mandatory independent dual verification for spinal medication workflows.

Tennessee criminal investigation

• ▪The Tennessee Bureau of Investigation opened a criminal investigation into the Ascension Saint Thomas Midtown pharmacy error after receiving a referral from the Tennessee Health Facilities Commission.
• ▪As of August 24, 2026, no criminal charges have been filed in the Tennessee Bureau of Investigation's probe, and the agency has not stated if individual staff members are under scrutiny.

Medication error accountability debate

• ▪The 2019 RaDonda Vaught case remains a flashpoint among nurses regarding whether honest medication mistakes should carry criminal liability.
• ▪The investigation into the Ascension pharmacy error has drawn comparisons to the 2019 criminal prosecution of former Vanderbilt nurse RaDonda Vaught following a fatal medication error.

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