Patient was in prone position, under general anesthesia for lumber laminectomy.During procedure, the anesthesia machine ventilator malfunctioned and failed.Anesthesia crna began to ventilate by hand, anesthesia doctor and technicians were called into the room to assist while an alternate anesthesia machine was brought into the room and put into operation.Thankfully this occurred at a time of day that allowed for an alternate machine to be readily available as nearby or's were not in use at the time.The anesthesia machines are preventively maintained twice a year ((b)(6)).Machine control# (b)(4) had its preventive maintenance performed on in (b)(6) of this year and last summer.At the time of the failure, the machine was taken out of service and replaced with a spare anesthesia machine.
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