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- W2114274362 abstract "BackgroundGanglionated plexi ablation during atrial fibrillation surgery is not technically standardized for precise ganglionated plexi locations or ablation sequence. We aimed to identify precise active ganglionated plexi locations in patients with structural heart disease and explore the feasibility of anatomic ganglionated plexi ablation without prior mapping in patients with atrial fibrillation.MethodsThirty patients with valvular disease-associated atrial fibrillation underwent ganglionated plexi ablation and a modified maze procedure. In 20 patients, ganglionated plexi mapping was performed to identify active plexi. According to mapping results, anatomically determined plexi were ablated without mapping in the final 10 patients. Ganglionated plexi ablation outcomes with and without prior mapping were compared between perioperative and early postoperative periods.ResultsActive ganglionated plexi common to more than 20% of patients were identified in the superior and inferior right pulmonary veins, superior left pulmonary vein, interatrial groove, and inferior left atrium. Inferior left atrial plexi ablation resulted in maximum vagal modulation. Compared with ablation using mapping, anatomic ablation yielded more vagal modulation in heart rate variability and decreased the requisite cardiopulmonary bypass time.ConclusionsThe sequential pacing and ablation technique identified an optimal ablation sequence that best ensured vagal reflex elimination from all ganglionated plexi. Anatomic ablation using a predetermined ganglionated plexi map may be a viable alternative to individual plexus mapping before ablation. Ganglionated plexi ablation during atrial fibrillation surgery is not technically standardized for precise ganglionated plexi locations or ablation sequence. We aimed to identify precise active ganglionated plexi locations in patients with structural heart disease and explore the feasibility of anatomic ganglionated plexi ablation without prior mapping in patients with atrial fibrillation. Thirty patients with valvular disease-associated atrial fibrillation underwent ganglionated plexi ablation and a modified maze procedure. In 20 patients, ganglionated plexi mapping was performed to identify active plexi. According to mapping results, anatomically determined plexi were ablated without mapping in the final 10 patients. Ganglionated plexi ablation outcomes with and without prior mapping were compared between perioperative and early postoperative periods. Active ganglionated plexi common to more than 20% of patients were identified in the superior and inferior right pulmonary veins, superior left pulmonary vein, interatrial groove, and inferior left atrium. Inferior left atrial plexi ablation resulted in maximum vagal modulation. Compared with ablation using mapping, anatomic ablation yielded more vagal modulation in heart rate variability and decreased the requisite cardiopulmonary bypass time. The sequential pacing and ablation technique identified an optimal ablation sequence that best ensured vagal reflex elimination from all ganglionated plexi. Anatomic ablation using a predetermined ganglionated plexi map may be a viable alternative to individual plexus mapping before ablation." @default.
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- W2114274362 date "2014-11-01" @default.
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- W2114274362 title "Exploration of Theoretical Ganglionated Plexi Ablation Technique in Atrial Fibrillation Surgery" @default.
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- W2114274362 doi "https://doi.org/10.1016/j.athoracsur.2014.06.044" @default.
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