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Abstract Objective To investigate the influence of anomalous pulmonary vein (PV) and acute PV reconnection on long-term outcome of circumferential PV ablation (CPVA) in paroxysmal atrial fibril ation(PAF). Methods 70 patients with PAF uncontrol ed by drugs were enrol ed. The number and diameter of PV were determined on three-dimensional CT im-ages of left atrium and PV. CPVA was performed and acute PV reconnection was ablated additional y until elimination of al PV potentials. Patients were divided into recurrence group (n=18) and no recurrence group (n=52) based on ECG and Holter recordings during follow-up of (10.3±5.6)months. Results The ratio of patients with anomalous PV and left com-mon PV (LCPV) was significantly higher in recurrence group than in no recurrence group(P<0.05). The diameter of LCPV was larger and the percent of acute PV reconnection was higher in recurrence group than no recurrence group (P<0.05, P<0.01). Acute PV reconnection occurred more frequently in the junctional area between superior and inferior PV than in other position. Binary logistic regression analysis revealed that the diameter of LCPV (OR=5.007, 95%CI 1.581~15.852, P<0.01) and the number of acute PV reconnection (OR=7.463, 95%CI 1.975~28.197, P<0.01) were independent risk fac-tors of AF recurrence after ablation. Conclusion The diameter of LCPV and the number of acute PV reconnection are re-lated to recurrent of PAF after CPVA.
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