Two weeks after surgery, I developed atrial flutter, which I had never had before either surgery. I had normal sinus rhythm upon release, but a slightly elevated
heart rate due to post-operative anemia. Now my heart rate varies from 65 to 120 and is often irregular. I was told it may convert to normal rhythm on its own, but I started on coumadin, but have to be therapeutic for a month before attempting cardioversion. Has anyone else experienced this after heart surgery?