The first step I would take is to set your device exactly like it was set prior to the change out
-- make sure rate response is turned on
-- make sure it is capturing appropriately
Sometimes people cannot be maintained in normal rhythm and atrial fib is permanent. Your doctor might be doing everything right -- it is hard to say. If you aren't sure, rather than changing doctors, you could get a second opinion for another cardiac electrophysiologist. It is likely not a question that can be answered in a single visit. They would likely need to make a few changes and see how you feel afterwords as a result of the changes.
I have a had 1 or 2 cases similar to this. Patients told me that they didn't feel the same after a device change out and I could never figure out why. Changing the rate response settings on your device might help.
Good luck and I hope this helps.
Mine one doesn't set right not because of changing the new pacer. My fourth pacer implanted in 2002. All the time fine until 2005, it suddenly went wrong and keeps very wrong. My doctor unable to find fault and unable to set it right like before. He told me all in my head............. Well, the site is getting sharp pain in certain position. It is the pain at my pacer site, not in my head. The ventricle pacing which is like an express train. Again it is not in my head. Now I'm really hate my pacemaker.
Thank you. I am seeing my Cardiologist on Monday for a stress test so will mention your comments to him, if I may?
And is it wrong to push myself if I feel exhausted?