2018 Volume 38 Issue 1 Pages 5-12
Aims : We created a new catheter ablation method with continuous pacing from the tip of the ablation catheter（CP ablation）to improve the quality of pulmonary vein isolation（PVI）for atrial fibrillation and analyzed the efficacy and safety of this method. Methods : In 16 patients in whom PVI was performed for paroxysmal atrial fibrillation（8 with a CP ablation, 4 men and 4 women, average age 68.9±9.9y, and 8 with a linear ablation, 6 men and 2 women, average age 58.5±9.9y）the duration of the power delivery time, total fluoroscopic time, total procedure time, and appearance of reconnections as well as dormant conduction of the left atrium-PVs after PVI were investigated. Results : The total power delivery time（CP ablation vs. linear ablation, 23.8±4.3min vs. 29.5±4.6min, respectively, p＝0.03）and total fluoroscopic time（CP ablation vs. linear ablation, 27.0±6.0min vs. 36.0±6.0min, respectively, p＝0.05）were shorter in the CP ablation group than in the linear ablation group. There were no significant differences between the groups in the total procedure time（CP ablation vs. linear ablation, 123.8±9.0min vs. 113.9±13.5min, respectively, p＝0.23）, the appearance of dormant conduction（CP ablation vs. linear ablation, 4 of 8 vs. 2 of 8, respectively, p＝0.32）and reconnections（CP ablation vs. linear ablation, 4 of 8 vs. 2 of 8, respectively, p＝0.32）after PVI. Conclusion : CP ablation was useful for reducing the total power delivery time and total fluoroscopic time of PVI.
