Zoll medical corporation evaluated the device and the device performed to specification.The device was recertified and returned to the customer.Review of the device activity logs confirmed that when the end user attached defibrillation electrodes, they did not change the "lead view" to "pads" and the device remained in lead ii view.Although this prevented the ecg signal from being viewed on the display, this is not an indication of a device malfunction.The log showed that the device recognized the patient impedance.Therefore, the user would need to switch to the "pads" view to obtain the ecg signal via the electrode pads attached to the patient.Had the user pressed any of the defib related buttons or manually selected the "pads" view, the signal would have displayed on the display.There was no malfunction found with the device and this report has been closed as device used incorrectly by user.Analysis of reports of this type has not identified an increase in trend.
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