[Circumferential pulmonary vein ostial isolation for atrial fibrillation guided by EnSite NavX three-dimensional electrophysiological mapping].

Objective To investigate the efficacy and safety of circumferential pulmonary vein ostial isolation guided by EnSite NavX three-dimensional electrophysiological mapping in patients with atrial fibrillation (AF). Methods Thirty-eight patients with drug refractory paroxysmal or persistent AF underwent circumferential pulmonary vein ostial isolation and were followed up to investigate the efficacy and safety of the treatment. Results All cases reached the endpoint of the ablation, and both sides of the pulmonary vein were completely isolated, with an average procedure time of 200.4±37.0 min, X-ray exposure time of 54.7±9.7 min, and three-dimensional left atrial geometry reconstruction time of 27.5±7.5 min. During the follow-up for 9±3 months, the success rate of initial ablation was 89.5%, and the incidence of procedure-related complications were 7.9%. Conclusions Circumferential pulmonary vein ostial isolation guided by EnSite NavX three-dimensional electrophysiological mapping can be effective and safe for AF treatment.