Limitations:
Our study has several limitations. First, this is a retrospective study
that does not consider the implication of LAA ostial changes on clinical
outcomes. Therefore, we are currently following our patients’ s cohort
prospectively to assess for stroke incidence and rates of other
complications. Second, only 37 patients in the cohort underwent
post-ablation CMR studies and were thus used to calculate changes in LAA
ostial size following catheter ablation. However, the reduction in
ostial size was nevertheless significant in this subgroup.