Bradycardia it’s not uncommon in someone who is athletically fit as you seem to be with your walking. My doctor suggested the pacemaker to me for various other reasons. I told her no thanks. That’s just me that’s not for everyone. I think I would get a second opinion from an outside source of doctors. See what they have to say about the matter. Is it possible to have the pacemaker removed? I don’t know, but I would definitely get a second opinion.