Zoll medical corporation evaluated the device and the reported malfunction was not replicated or confirmed.The device was put through extensive testing which included functional test, 30 joules self test, bench handling, pace test, and capture test without duplicating the malfunction.Review of the device's activity log indicate that the device was able to pace for almost 40 minutes followed by occurrences of "pd core warning 247", "check pads","poor pad contact" and "lead off" messages.The pd core warning 247 and ecg lead off messages indicates an invalid patient impedance was detected or there was a connection issue between the pads and the patient.It's important to mention that the pads, multifunctional cable, and ecg cable used during the time of the event were not returned for evaluation as part of the investigation.The device was recertified and returned to the customer.No trend is associated with reports of this type.
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