Patient information: patient information was not provided.Livanova (b)(4) manufactures the s5 roller pump.The event occurred in (b)(6).A livanova field service representative was dispatched to the facility to investigate.He inspected the device and was unable to reproduce the reported issue or identify any problems with the device.A pump serial readout was provided to livanova (b)(4) for analysis.No alarm, stop or warning regarding the bubble sensor was stored in the microcontroller of the arterial pump.Through follow up communication with the chief perfusionist of the center, livanova (b)(4) learned that the claimed air delivery to the patient occurred at the end of the surgery when the perfusionist was retrieving as much blood as possible from the arterial line.During the reported event, the perfusionist intentionally overrode all monitoring function in order to continue to run the pump and return as much blood as possible to the patient.In this condition it is likely that the operator was not able to stop the pump before the air was reaching the patient.Based on the retrieved information on the event, and the results of the inspection of the device and the readout of the pump, livanova (b)(4) concluded that the device worked according to specifications.Through follow up communications livanova (b)(4) learned that the patient is stable and will be transferred to a rehabilitation facility.If any additional information pertinent to the reported event is received, it will be provided in a supplemental report.
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