The clotting mechanism for cuts, scrapes (maybe not deep gashes) is different than for internal problems. I'm an MTB'er on Warfarin and subject to the same scrapes, slashes etc now as before my problem, but these cuts heal about as well now as they did then. I had two ablations 10 years ago and no AFib since, but just when I was ready to stop taking it a few years ago, I had a TIA and decided to continue since it doesn't seem to affect me negatively. I see my cardio tomorrow, so who knows.