(b)(4).The product was disposed by the hospital; therefore no manufacturer laboratory investigation was possible.Clotting is a known phenomenon and has been investigated in a previous complaint.The cause of this failure was determined to not be attributed to a device related malfunction.Based on these results and the information available at this time, the oxygenator in question operated within maquet cardiopulmonary specifications.Based on this a confirmation of the failure is not possible.This data will be handled through a designated maquet trending process.If a trend occurs, it will be escalated to quality assurance management for review and determination if further investigation is necessary.Due to this no further action will be completed at this time.
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According to the customer: "intensive trombosis was observed both in inlet and outlet of oxygenator.Follow up was maintained inorder to have act value between 150-180 sec.Lowest act value was observed 136 sec., highest value was 254 sec.After observation of thrombus in morningtime, heparin dosage was increased and 500iu was flashed, 2 unit ffp is given.After 14.00 lt it was observed that thrombus was no more proceeding.Blood gas analysis was performed from outlet of oxygenator.As a result of gas analysis it was observed that oxygenation was good and decided to run ecmo with same set for a while" (b)(4).
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