Alaris pump immediately shut off after moving iv pole slightly.Pump alarms read channel error and shut off but continued to beep as iv lines were being switched over.Fentanyl gtt was removed and insulin gtt was loaded into pump.Shortly thereafter, pt became unresponsive and code was called.During code, it was noted that fentanyl infusion was taken off pump and erroneously infused off pump as roller clamp not applied to line resulting in respiratory depression and apnea.It was also noticed that the auto-lock mechanism on the iv tubing was not engaged when line was switched over to the pump just prior to code.
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