Above Posterior box Lesion had to be created in a 65-year-old lady with persistent atrial fibrillation TIA. She also had a normal PVI. This is using Carto biosense webster.
60-year-old male with severe symptomatic get your fibrillation. Left shows before ablation. Right shows after ablation using precision velocity Cardiac mapping system. Posterior wall wall is gray Indicating a voltage of less than .01 or dead tissue.