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Objective: This study sought to evaluate conventional and flouroless catheter ablation for focal atrial tachycardia. Method: 112 patients of atrial tachycardia were divided into 2 groups. Group I consisted of 73 patients who underwent conventional catheter ablation. Group II consisted of 43 patients who underwent the flouroless catheter ablation (39 patients of the first procedure and 4 patients met with failure of the conventional catheter ablation) Results: The first procedure acute successful rate in group II was significantly higher than in group I (94.8% versus 86.3%, respectively; p<0.05). The fluoroscopy time, and radiofrequency delivery time of group I was significantly longer than the group II, respectively (904.26 ± 547.56 seconds in group I versus 169.21 ± 85.66 seconds in group II; p<0.001); (157.32 ± 81.82 seconds in group I versus 95.87 ± 55.24 seconds in group II; p<0.001). The number of radiofrequency applications of group I was significantly higher than group II (8.65 ± 8.15 times versus 6.05 ± 4.69 times respectively; p<0.01). However, there was no significant difference between 2 groups in procedure time (78.71 ± 38.76 minutes in group I versus 76.34 ± 36.48 minutes in group II; p=NS). After 6 months follow-up, 7.9% in group I and 5.3% in group II had a recurrence of atrial tachycardia. Conclusion: The fluoroless catheter ablation enhanced a more successful rate than the conventional catheter ablation. The fluoroless catheter ablation can reduce fluoroscopy time, radiofrequency delivery time and the number of radiofrequency applications compared to conventional catheter ablation.

Comparison of Conventional and Flouroless Catheter Ablation for Focal Atrial Tachycardia