It was reported that there was a knocking noise coming from the vicinity of the cardio help pump, there was no changed noticed in pump parameters or alarm/warning messages displayed on the cardiohelp screen.The patient was switched from the hls circuit on to a centrimag circuit and the hls disposable was removed at which time there was clotting, and blood found on the side of the disposable that engages with the centrifugal pump.The patient tolerated the circuit change well and there were no adverse effects to the patient.The failure occurred during treatment.No harm to any person has been reported.Complaint id (b)(4).
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