There are many reasons for extra beats, many of which are benign and irrelevant.
However it is clear you have had a major intervention and are under a cardiologist so the issue is the underlying pathology. ie the CAUSE. We would need to know what the problem is to determine the prognosis and the likely response of the regulator.
You would be best advised to get a complete medical report from your cardiologist AFTER he has completed all his tests and submit it to an AME for advice. Many abherrant pathways that conduct electricity the wrong way in the heart are irrelevant after they have been destroyed or ablated, so I wouldnt be too worried, BUT you have not provided enough information for anyone to give a sensible reply
Except perhaps Winnhofer...