Not a branch, the actual one.

The first doc in Reno said, "Yeah, this is fairly straightforward. We're gonna do an echo to determine exactly where the defect is." After the echo, the doc said, "Yeah, you wanna go see someone who has done a lot of these."

The extra pathway that has to be ablated is close to the central cluster of pathways in the center of the heart. Miss by just a bit and you get a pacemaker.

The doc here said, "Yup, he's right about the location. I've never had a problem with that one, and we've got some tricks to lower the risk."

Online ratings for the dude are stellar. Nothing more to do but wait. (Oh, and call our insurance.)