I had last ablation for avnrt svt on Dec.13, 2007. So far, I have not had any reoccuring fast heart rhythms! However, now I am experiencing a "pressure" type sensation in my chest, along with few palpitations. This occurs when I go from sitting to standing, or at night, when sleeping, when I change sleeping postions, side to side. Anyone elso out there have any of these post-ablation symptoms? The nurse I spoke to said it might be due to my heart experiencing excitability.....I just don't know. ( I had 13 burns to ablate this time around; the doctor said he thinks he got it all ). Maybe all of these "burns" take time to heal?????? Thanks for any input anyone can give to me at this point.