First-pass isolation and procedural metrics associated with catheter ablation outcomes for atrial fibrillation: a retrospective cohort study - Zexi Li; Fanghui Li; Xianjin Hu; Aobo Gong; Ying Cao; Bangjiaxin Ren; Wenjie Li; Yifan Zhou; Rui Zeng (Frontiers in Cardiovascular Medicine, 2026)