JIEN-JIUN CHENChiu, Fu-ChunFu-ChunChiuSHENG-NAN CHANGHSIAO-LIANG CHENGPANG-SHUO HUANGCHO-KAI WUYI-CHIH WANGJUEY-JEN HWANGCHIA-TI TSAI2023-03-102023-03-102023-02-071355-6037https://scholars.lib.ntu.edu.tw/handle/123456789/629203Patients with drug-refractory atrial fibrillation (AF) and pre-existing left atrial appendage occluder (LAAO) device may need pulmonary vein isolation (PVI). In this pioneer study, we investigated the impact of pre-existing LAAO on AF substrates and outcomes of PVI.enAblation Techniques; Atrial Fibrillation; Atrial Flutter; Strokejournal article10.1136/heartjnl-2022-321934367503552-s2.0-85148671860WOS:000928724100001