The device was returned to zoll medical (b)(4) and the device performed to specification.The device was put through extensive testing including a visual inspection and functionally tested on a defib simulator without duplicating the report.The multi-function receptacle was replaced as a precaution.The device was recertified and returned to the customer.Review of the device activity logs did show the device was powered into manual mode with pads attached via a cpr adaptor.The ecg waveform can clearly be seen while the device is in the pads view for the first 6 seconds of the case.The device is then cycled into lead ii view, which does cause the ecg data to drop from the display.Cpr compressions are then performed, the pads are then disconnected from the adaptor and plugged back in 5 seconds later.The ecg waveform is once again visible as the device was switched to the pads view and remained visible for the entirety of the case.The customer's report of continuously switching from leads iii view to pads is not supported in the logs, which only shows one cycle change to leads view was performed.None of the accessories used were returned for evaluation as part of this investigation.Analysis of reports of this type has not identified an increase in trend.
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