This report is being filed to provide additional information and corrected information.Investigation: the device history record (dhr) was reviewed for this lot.There were no issues noted in the dhr that would have contributed to the microbial contamination as experienced by the customer.The customer reported that the culture was positive for propionibacterium acnes.Per literature review, this species is a gram-positive human skin commensal that prefers anaerobic growth conditions and is involved in the pathogenesis of acne (bhatia 2004).Per internal lab documentation, the devices terumo bct manufactures to collect, separate, and store blood products are terminally sterilized to a sterility assurance level (sal) of =10-6.Additionally, a sterility assurance system has been designed and employed to ensure this sal will be achieved for every lot of product manufactured.The sterility assurance system employed at terumo bct ensures the disposable device is not the source of contamination.Root cause: no system-related root cause for the alleged bacterial contamination was identified.Since there was no specific machine serial numbers known or recorded in this study, no dlogs were available for review.There was no mention of related leaks, alarms, procedure pauses, or centrifuge stops reported that may have pointed toward an instance where bacteria could be introduced.Sources of bacterial contamination include but are not limited to:- post-processing laboratory practices such as qc sampling or handling techniques.- poor venipuncture technique- patient's catheter was not adequately maintained citation: bhatia, ajay, et.Al.2004.Propionibacterium acnes and chronic diseases.The infectiousetiology of chronic diseases:defining the relationship, enhancing the research, and mitigating the effects: workshop summary.Corixa corporation: seattle.
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Per the customer, the patient was monitored for fever following the event, with no reported reaction that the customer is aware of.The patient was cultured the next day and results were negative after 14 days.The customer was unable to determine if there was any further medical intervention.The customer declined to provide the patient identifier.
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