I am a little confused . Demand pacemakers usually are set at a level. Mine is 60 The issue for me is to make sure the battery is normal. I check 2 times a week in the cardiologist office and the vendor tech for St.Jude provides the testing back to the Cardiologist. A shock from the pace maker would indicate a failure that should result in replacement. Leaving a pacemaker that has gone sour in and killing the sensory nerves with abatments is strange to me. Have you considered a second professional opinion. I have had spinal abatements but killing nerves to prevent a pacemaker shock doesn't seem reasonable.I am 90 years old. Please excuse my bluntness. Arrhythmia is not cured. It is controlled by the pace maker to avoid a stroke and with a suitabe blood thinner.