out of breath while exercising.
I had my device installed in February. Prior to that surgery I had been taking coreg 3.125 mg twice a day. I was able to frequently get on our ellipical machine for 45 minutes for a comfortable session with heart rate at 120. After the insertion of the PM, the EP doc took me off the coreg and substituted Metoprolol succinctate 50mg.
Now I have no stamina. Walking uphill I get winded very quickly. I am unable to use the elliptical at the same level I have been using for years.
Is it the new beta blocker, the PM or both? They have adjusted the PM for almost maximum reactivity to motion with very little difference.
Also, I have developed LBBB after the PM. I never had that before, only RBBB. Is this normal?