I have had my defibrillator for over two years with no problems. I had one shock within a month of the implant and my cardiologist raised the threshold slightly. No more problems until a group of VA doctors got a hold of me and made a lot of adjustments in the device two weeks ago. Last Thursday while cooking dinner the defibrillator decided to start going off and it proceeded to defibrillate me over 60 times in a matter of 35 minutes. The printout showed the only heart change was Atrial Fibrillation which I have had chronic for the last two years. I had them shut down the defibrillator as I think I would rather take my chances than to go through that torture again.I no longer trust the unit as theraputic.I still have the pacer and monitor sections running.I also have a lot of anxiety from the shocks.