Clinical implications
Given the comparable prevalence of GH after CBA of the LA roof in addition to PVI, our results suggest that CBA of the LA roof can be performed safely. In patients with a lower LA roof, however, clinicians should consider the risk of GH after ablation. In addition, patients with GH may still experience GH-related symptoms for a while after ablation. To reduce the incidence of GH after ablation, we recommend performing CBA of the LA roof under LET monitoring.