Impedance Shock

Hello,
I recently had a Medtronic EnPulse implanted in July.  It is my seventh pacemaker (first was 1975) and I have 26 year old unipolar leads (Medtronic 6957 and 6957J).  Recently I have been able to feel the impedance check every three hours in the form of a shock that makes my arm and chest wall jump.  My appointment with my EP is not until Oct 16th.  Everything else seems to be OK.  Ventricular function seems fine (no dizziness) and phone monitoring revealed nothing out of order.  Just quite a jolt every three hours without fail.  
Is this something I should deal with immediately or can it wait until my appt?
Thank you.
Gellia

[Cleveland Clinic]

I think you should contact your EP and let him know about this sooner than October 16th.  It shouldn't be happening this often.  There may be a sensing problem.