The device was not returned to edwards for evaluation as it was discarded by hospital staff.Manufacturing records were unable to be reviewed as no lot number was provided.Based on the information received, a manufacturing related issue was not identified.A definitive root cause could not be determined; however, operational context most likely contributed to this event.No further corrective or preventative actions are required at this time.Trends will continue to be monitored through the use of edwards quality systems and if action is required, appropriate investigation will be performed.
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