The device was returned to zoll medical; the customer's report that the device was unable to capture the patient's heart rhythm was not replicated or confirmed during testing of the device.A review of the clinical data showed that pacing occurred on a date close to the aware date where coupling issues were encountered.The cause of the issue could not be confirmed; however it's important to note that the ecg cables, nor the electrodes were not returned for evaluation.These circumstances can be caused by many factors, including movement of the ecg electrodes, or the ecg cable; movement of the patient or other environmental conditions that are not related to a device malfunction.Based on the extent of the baseline disturbance during the ecg signal in question the device responded appropriately.The device was recertified and returned to the customer.Analysis for reports of this type has not identified an increase in trend.
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