H11:section a through f - the information provided by bd represents all of the known information at this time.Despite good faith efforts to obtain additional information, the complainant / reporter was unable or unwilling to provide any further patient, product, or procedural details to bd.The following were reviewed as part of this investigation: patient severity, applicable previous investigation(s), sample analysis, applicable fmea documents, and labeling.Based on a review of this information, the following was concluded: the complaint of a backflow of blood into the catheter was inconclusive due to the sample condition.One flexxicon ii dialysis catheter was returned for investigation.The catheter exhibited evidence of use.The catheter was received with the clamps closed over each extension leg.What appeared to be dry blood residue was observed in the extension legs distal to the closed clamps.The bifurcation was discolored, and a tacky residue was observed on the rotatable suture wings.A functional test revealed that both lumens were patent to infusion, but the venous lumen was sluggish to infuse and aspirate due to the residue within the lumen.The residue could not be flushed from the lumens during testing.The clamps were closed and an attempt was made to flush and aspirate past the clamps, but no fluid could be flushed or aspirated past the closed clamps.The complaint is inconclusive since the reported event could not be reproduced and since other contributing factors, such as pressure gradient and technique during use, were unknown.A lot history review (lhr) review is not possible, as no manufacturing lot number has been provided by the complainant.
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