I recently went in for an ablation procedure about two months ago to treat probable svt. I have had arrhythmia problems for about 25 years but recently was getting progressively worse, so I decided to have the procedure. I stopped taking metroprolol three days prior. The ablation procedure went well, I had no complications from it whatsoever and the problem ended up being an extra pathway in my electrical system which I was born with. Svt ablation has a 90% success rate. I feel so much better knowing that I don't have to worry about those scarry episodes anymore.