We just got an update from the nurse. Prep work took longer than what they expected but they're doing the ablation right now. There is a lot of scar tissue from previous surgeries so it's taking longer than they originally thought. He hasn't been put on the heart/lung machine yet, which will take about an hour when that happens. The surgeon will then perform the procedure. I think that's the next step. I will continue to update when we get them. Stay tuned!