As a nurse faces prison for a deadly error, her colleagues worry: Could I be next?

Four years ago, inside the most prestigious hospital in Tennessee, nurse RaDonda Vaught withdrew a vial from an electronic medication cabinet, administered the drug to a patient, and somehow overlooked signs of a terrible and deadly mistake.

The patient was supposed to get Versed, a sedative intended to calm her before being scanned in a large, MRI-like machine. But Vaught accidentally grabbed vecuronium, a powerful paralyzer, which stopped the patient’s breathing and left her brain-dead before the error was discovered.

Vaught, 38, admitted her mistake at a Tennessee Board of Nursing hearing last year, saying she became “complacent” in her job and “distracted” by a trainee while operating the computerized medication cabinet. She did not shirk responsibility for the error, but she said the blame was not hers alone.