Zoll medical united kingdom evaluated the device and the customer's report was not replicated or confirmed.The device was put through extensive testing including bench handling, ecg monitoring stress testing, and analyzing functional stress testing without duplicating the report.The device was recertified and returned to the customer.Review of the device activity logs indicated that a patient impedance is never recognized.Electrodes are recognized as attached to the device, but not to a patient.There are many reasons why the device may not have detected a valid patient impedance, including but not limited to: pads not applied to patient pads are not fully inserted into the mfc (or cpr-d adapter) proper connection between pads and adapter faulty cpr-d adapter/mfc on the patient end faulty pads preventing proper connection faulty pads preventing identification.Analysis of reports of this type has not identified an increase in trend.The pads used at the time of the reported event were not returned for evaluation.
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