Hello, I started having ablations about 15 years ago. And my last one was 3 years ago. The "regular" ablation is where they went in through the groin, "mapped" the heart, looking for the site of the SVT and then ablate it. Although, for a variety of reasons they were unsuccessful. During the course of these ablations I developed AFib. 3 years ago my situation became unmanageable with meds. That's when they did the Pulmonary Vein Ablation. My understanding is that it is for AFib but it could be for SVT as well. You are asleep for this one and it is more extensive/ The premise is that the rhythm is being triggered in one of the Pulmonary veins, not in the heart. So they ablate all around each vein and I think the atria as well. It is through the groin as well and in my case, it was successful. I haven't had an episode of any kind since the PVA and I am off all the meds that were used to try and control it. Hope that helps.