It was reported that during extracorporeal membrane oxygenation (ecmo) circuit priming, liquid was noted in the gas inlet port, but it was thought some of the priming solution had splashed in.The priming continued and the circuit went on patient support.After about an hour, it was noted that blood was leaking from the oxygenator.The blood flow was 3 lpm, gas flow was 4 lpm, and the fraction of inspired oxygen (fio2) was 100%.The oxygenator inlet and outlet pressures at the time of the event were not measured and the pump motor speed was 4100 rpm.The source of the leak was not identified, but the oxygenator was noted to be cracked; and it was switched out for a new oxygenator.It was noted that the patient was off veno-venous (vv) ecmo for less than 1 minute while the oxygenator was changed out with no adverse effects.The customer was not impacted by the issue and the new oxygenator performed as expected.The patient remained on vv ecmo.
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