@sandrah2024 I had an ablation in November and I too noticed some PAC's which are easily "felt" as you describe, but I was told to expect some of that as the heart "heals". But PAC's are different than fibrillation as I understand it--still technically an arrhthymia, but still a real beat that actually does pump blood (perhaps not as effectively, but not just a flutter like A-fib). I have noticed that the more active I am, the fewer PAC's I have; it's like if my pulse is slower, the PAC's tend to "fill in" but when I am active in the gym or doing housework, they are absent. Perhaps as you get back to normal activities after knee surgery, these will also tend to deminish. Just a possibility--not to mention the stress of knee surgery and the pain/discomfort it creates for a time. I am comforted by the fact that PAC's are not "dangerous" in and of themselves, so I hope you (and I) will find "freedom" from them soon. I certainly can appreciate how you feel; I can't imagine having 4 ablations! I sincerely hope one is enough for me! Best wishes in 2026. Stay positive and keep moving! My husband had TKR two years ago this month and he is doing very well; he goes to the gym every day! He rarely complains about his knee--the new one and the "old" one! Hang in there and remember the experts say that knee surgery recovery takes a year!