Additional information was received that the patient is still reporting the device is not working and also that it is causing pain.Available programming history for this patient was reviewed and revealed normal diagnostics up through (b)(6) 2007.A battery life calculation was performed with the available programming history.The result revealed 2.0 years remaining until near end of service flag = yes.It was reported that the patient believes that some other external device shorted the vns system, although clarification on this point could not be obtained.When the patient's vns generator was interrogated, it showed that the device was set to 0.0ma output current.No additional relevant information has been obtained to date.No known surgical interventions have occurred to date.
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