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Zoll medical corporation evaluated the device and the customer's report was not replicated or confirmed.The device was put through extensive testing including bench handling and pacer functional stress testing, using test accessories without duplicating the report.The device was recertified and returned to the customer.Review of the device logs did show pads off, pacer cable fault when pacing, pacer pads lead fault, and ecg lead fault messages.However, they do not indicate a device malfunction and could have several different causes, including, but not limited to, poor patient preparation, poor coupling, or defective accessories.A valid patient impedance through the pads and an ecg signal through the ecg leads cable are necessary criteria for pacing.Analysis of reports of this type has not identified an increase in trend.
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