Prevalence, Electrophysiological Properties, and Clinical Implications of Dissociated Pulmonary Vein Activity Following Pulmonary Vein Antrum Isolation

摘要: The objective of this study was to investigate the prevalence, electrophysiologic properties, and clinical implications dissociated pulmonary vein (PV) activity after PV antrum isolation (PVAI) in patients with paroxysmal atrial fibrillation (AF). One hundred seventy-three consecutive (61 ±10 years old, 141 men) drug-refractory AF who underwent ablation were analyzed. After identification arrhythmogenic foci, PVAI performed all patients. Of total 346 isolated ipsilateral PVs, 97 (28.0%) silent, 35 (10.1%) demonstrated ectopic beats, 209 (60.4%) a regular rhythm, 5 (1.4%) fibrillatory activity. culprit thoracic identified 77 (44.5%). venous observed 68 (79.1%) 178 (68.5%) PVs among 86 triggers 260 without triggers, respectively (p = 0.06). There no significant difference incidence acute reconnections exposed by adenosine triphosphate between silent (20.6% vs 19.1%, p 0.78). mean follow-up 48.7 ± 7.9 months there rates freedom from tachyarrhythmias single procedure those (62.1% 63.3%, 0.74, log-rank test). In conclusion, although appearing is an important finding prove bidirectional conduction block left atrium during procedure, might be limited.