I work in radiology and sedate patients every day, our hospital has a scanning system but we don't scan any of our meds, the patient is either covered or inside the scanner, the meds aren't ordered ahead of time so they aren't on the patient's profile, except in this case because the doctor is scrubbed in and gives verbals during the case, the time-out is the patient check, since we do anesthesia cases also our Pyxis has paralytics in it and all our meds have to be an override, if you are not trained or in too big of a hurry, i can see how you could grab the wrong vial, i've written several safety reports because the wrong meds were in drawers or because the way the pyxis was loaded made it too easy to grab the wrong thing (you have to pull it out the whole way to get zofran if you only pull it out halfway you get amlodipine)
I agree the nurse was negligent, but blaming her won't save anyone's life. Learning from this can.
-Don't give meds you aren't familiar with, if you aren't sure look them up. In a genuine emergency someone else will be there to ask
-If you aren't trained in an area or aren't comfortable in a task refuse the task no matter how pressured you may feel
-No ICU patient should be out of the ICU without an ICU nurse or an anesthesiologist assuming care. If the nurse covering for lunch wasn't an ICU nurse or sedation nurse either lunch break has to wait, the scan has to wait, or someone else needs to take them
-No ICU patient should be on any table or in any scanner without monitoring and a nurse monitoring them
-If a patient is sedated for a scan or procedure (even if all you gave them was 0.5 of Versed) they have to be monitored for the duration of the scan ICU or not
-Know what resources your hospital can pull out of a hat, I've call my house supervisor after hours because the patient's ICU nurse had to leave since his other patient was coding upstairs leaving me alone with a patient that had unstable pressures, needed drips titrated and I had already started sedating. She sent me a rapid response nurse to manage the drips so I could focus on the sedation