The device and accessories were not returned to zoll medical corporation for evaluation.The customer report was observed during review of the clinical event data provided by the customer.However, the findings were not indicative of a malfunction with the device.The clinical data was able to confirm that the impedance value registered by the device was valid.The device was fully charged, then manually switched to lead 1 view by the user, then the charge was internally discharged via the disarm soft key by the user.Despite the change to lead view, the device was capable of delivering a shock if the user had pressed the discharge button during the window that the device was fully charged or changed the view back to pads from lead 1.This report has been determine to be user error.Analysis of reports of this type has not identified an increase in trend.
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