It was reported that during use on a patient, the cardiosave intra-aortic balloon pump (iabp) unit (b)(4) had "issues with augmenation" and they could not see the iab inflating.The pump showed that there was an augmentation of 90 but the augmentation waveform was flat and the aug alarm was displayed.They switched the patient to another pump.(ch279407e8) this was successful until they began to transport the patient and the pump alarmed with "gas gain", then suddenly made a screeching sound, and "system failure" was displayed.The screen then went blank.They rebooted the pump and it happened again.They switched to a 3rd cardiosave which is currently working without alarms.The patient is stable and no harm was reported.
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