Only your doctor can tell you. But assuming there is no "heavy lifting" associated with the customer interface the work would be considered light physically, I believe. The emotional strain is something you understand and is very personal. Heavy traffic drives me "nuts".
Ablations vary greatly in how long it takes to recover, from a few days (maybe only a day, not sure) to weeks, depending on how much work was done in the heart as well as the physical aspects of the whole surgery.
The type of ablation would be a hint, PVC should be simpler and quicker to recover from than AFig surgery. This is from what I've read here, not from any personal experience.
Definitely no heavy lifting for a couple weeks. Driving for me (I've had 3 ablations) was not a problem except it wasn't all that comfortable. The groin area was bruised and tender; sitting for any length of time didn't feel good. The second ablation I had they must have bruised a nerve because my right groin was extremely tender and I had to sit with my leg fully extended. That cleared up after several weeks.
As Jerry said, it depends on the type of ablation and what your particular cardio recommends. I went back to work after a few days, did all my normal duties except for the lifting (no carrying 45 lb beavers, chasing down eagles or wrestling raccoons).
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