Investigation: a review of the device history record (dhr) for this unit showed no irregularities during manufacturing that were relevant to this issue.The run data file (rdf) was analyzed for this event.Root cause: review of the rdf indicates that the trima accel system operated as intended by displaying the ¿hemolysis detected¿ alert during the procedure based on the signals measured by the rbc detector.The rdf does not provide any additional information for investigation, it simply confirms that the alerts were triggered as designed.There is no method of differentiating between hemolysis or an rbc spillover via rdf analysis.Confirmation of hemolysis is inconclusive.The customer's observations could be related to a spillover or to actual hemolysis.An rbc spillover is generally related to an interface issue in the channel of the tubing set.Many factors can affect the interface of the fluids in the channel, including inaccurate hematocrit/hemoglobin entry, a procedure error, donor blood variables, a disposables kit issue, a machine issue, a centrifuge stop, or a tubing set loading error.Possible causes for hemolysis observed during a procedure include but are not limited to donor susceptibility (disease), needle flow rate too high, or manufacturing defects such as flash or kinks.
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The customer reported that during the first draw cycle of a platelet donation procedure, they received multiple alarms including 'hemolysis detected' alarm and noted red blood cells traveling up to the platelet bag and vent bag tubing lines.No testing was performed to confirm the alleged hemolysis.The procedure was discontinued prior to the first return cycle and rinse back to the donor was not performed.Per the customer, there was no problem with the donor and no medical intervention was necessary for this event.The patient's full identifier: (b)(6).The disposable set is not available for return, because it was discarded by the customer.
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