It was reported a patient was on cardiohelp providing veno-venous support using two femoral cannulae.Received two bubble alarms; the bubble intervention was not being utilized.After the second alarm a pocket of air in the post membrane side of the hls was noted.It was described as starting about 1/2 inch above the dia-con connector and extending to the top of the apex.Support parameters were reported to be: flow: 0.8-1.2 lpms, rpms: 1905, pven -63 mmhg, part 46 mmhg, pint 46 mmhg.Flow never above 2 liters/min.Air never pulled down to the outlet.An attempt to remove the air was made by removing the cap on the hydrophobic filter; with no change.An attempt to remove the air using the pig-tail was also not successful.Only blood was aspirated; not air.It was determined that the patient was being adequately supported and the current course would be continued without further attempt to remove the air pocket.The next morning, the customer reported that the situation had not changed and that they felt that the patient was well supported.After a few days the air was gone; appeared to slowly dissolve into the blood.Treatment was from 21:30 (b)(6) 2015 until 05:00 (b)(6) 2015; when the patient expired.As relayed by the customer, the death was not as a result of the device, but due to the patient's condition.(b)(4).
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