I have a defibrillator, not a pacemaker, but understand the implantation and connection to be somewhat the same. Concern: with my defib, I can't undergo an MRI or many other scanning procedures because the leads would react to the magnetic field. Check with your cardio-dude about that one; it's not easy (or possible???) to remove the leads in the event you need such a test. Of course, in my situation, the defib is not an option, so I have to give up the MRI option.
Best of luck.