Try researching Cardiac Cathether ablation. Thats what it sounds like. I work on a cardiac unit at and these almost always work. 100% success rate almost. You will be fine, a little sleepy after, and you will have to lie flat for atleast a few hours (4-12). Depending on how bad the a-fib is you may feel better as soon as it is done. You may not notice a difference besides lack of extra beats. You will have a very small inscision where they inserted the "wire" and will have to be careful of the wound for a few weeks. Dont forget its a major vessel, and you could bleed out if you do not listen to them, especially right after the procedure. Anyhow, try researching that, I think it will ease your concerns. It really is a pretty mild procedure.
Dx: UCTD,Raynaud's,iron deficientcy anemia,proteinuria
Rx: Multi-rec folic 500, Celebrex 200 mg, Plaquenil 400mg, Ultram PRN