Identification of left atrial ganglionated plexi by dense epicardial mapping as ablation targets for the treatment of concomitant atrial fibrillation.
Bottom Line: Sixteen patients (age, 68 ± 10 years; 11 males, 69%) with heart failure and concomitant AF (duration 55 ± 86 months) underwent intraoperative epicardial electrophysiological mapping and a GP ablation using the maze procedure at our institution.For those patients with active locations, a 7-day event-loop recording demonstrated that 12 (92%) of 13 patients were maintained in sinus rhythm 3 months after the operation.Dense epicardial mapping in the potential GP areas identified active GP locations in a high percentage of patients.
Affiliation: Department of Cardiovascular Medicine.Show MeSH
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Mentions: Radiofrequency GP ablation was performed by applying a dry bipolar pen probe as shown in Figure 2 (Atricure, West Chester, OH, USA). The cardiac response to the GP stimulation was eliminated with the radiofrequency ablation. After the procedure, the GPs were restimulated to confirm their ablation (Fig. 3). If the GPs remained active, the radiofrequency delivery was repeated. This entire process was duplicated until the responses of the GPs were completely eliminated. The GP ablation was performed and then followed by another radiofrequency procedure for AF, a maze IV procedure, and valve operation.