The customer reported during the resuscitation of a cardiac arrest patient, the tempus ls failed to provide an ecg tracing via the defibrillator electrodes.Providers on scene attempted to deploy a total of 3 defibrillator electrodes across two tempus ls devices without success.Troubleshooting efforts were unsuccessful and ultimately the cardiac arrest had to be managed with an aed (automated external defibrillator).It was noted after the call that all defibrillator electrodes were from the same lot number.Analysis of the data following the call revealed multiple messages in the monitor indicating "pads attached" and "pads detached" in rapid sequence.At times these messages were occurring 3-4 times a second.A user report was received related to a reported product problem which is currently being investigated.At the time of reporting, the device has not yet been returned for investigation.Further updates will be provided when the device is received, and the investigation is in progress.
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