It was reported the patient was admitted to the intensive care unit due to a ventricular tachycardia storm.The device provided appropriate shocks, however, the shocks were unsuccessful in terminating the electrical storm.The high voltage therapy on the device was deactivated and an external defibrillator was used to terminate the arrhythmia.Additionally, following the event, the device was in back up mode.Technical support was contacted and recommended reprogramming to resolve the event.Technical support suspected the back up mode was due to the use of the external defibrillator.The device was reprogrammed.There were no consequences to the patient due to the device.
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