Zoll medical (b)(6) evaluated the device and the device performed to specification.The device was recertified and returned to the customer.The customer's report was not observed during evaluation and functional stress testing of the device.No errors were seen in the device activity logs that would indicate a malfunction.The log shows that when the pads were applied to the patient, a valid patient impedance is measured, but the signal is not displayed on the monitor because the lead view remained in lead 2.The pads impedance waveform suggest the electrodes had good coupling throughout the case, and the device was capable of displaying the ecg signal through the pads lead view if it was selected.The device was recertified and returned to the customer.Analysis of reports of this type has not identified an increase in trend.
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