Flutter, believe it or not, takes place after ablations for AF surprisingly often. I don't know because I have never researched it, but it must be near 10% of all ablation cases, or a bit less. Happened to a friend of mine, and others on afibbers.org have said it happened to them. But, EPs routinely invite ablatees back to fix flutter, and it's roughly the same process, but it often happens in the right atrium this time. Anyway, flutter does sometimes result from an ablation for AF, strangely, and the better EPs will just go in again and try to block it the same way.