The Contrastive Study Of VisiTag-guided Radiofrequency Catheter Ablation And CF-guide Without This Algorithm In Patients With Paroxysmal Atrial Fibrillation

ObjectiveTo compare the clinical effects between VisiTag-guided and CF-guide without this algorithm in patients with paroxysmal AF ablation,and to analyze the risk factors for recurrent patients.MethodsIn 32 patients undergoing VisiTag-guided paroxysmal AF ablation(group A),the automatic annotation criteria was setted as follows:catheter stability range of motion≤2.5mm,duration≥5s,CF≥5g,and the tag diameter at 3mm,the next ablation site must overlapped with the former tag.Results and outcomes were retrospectively compared for 30 patients undergoing CF-guide without this algorithm(group B).According to follow-up results,the patients were divided into recurrent group(AF group)and non-recurrent group(NAF group),univariate and multivariate analysis were carried out to determinate the factors predicting the recurrence of AF.Results1.Successful PVI at completion of the initial anatomical line was more frequent in group A than group B(P=0.023),procedure time,RF application time and total fluoroscopy time was shouter in group A,while mean catheter force(CF,g,P=0.006)was higher in group A.The recurrence rate was higher in group B after 3 months,12(40.0)cases in group B and 5(15.6)cases in group A,P=0.032.2.Multivariate logistic regression analysis showed that age(OR=1.120,P=0.450)hypertension(OR=3.621,P=0.470),the left atrial diameter(OR=1.320,P=0.150)and single-circle isolation(OR=0.120,P=0.002),unsuccessful single-circle isolation is a important factor of recurrence in patients with paroxysmal AF after RFCA.Conclusion1.VisiTag mode,an automated annotation algorithm with an optimal setting,can safely and effectively improve single-circle isolation rate,RF application time,total fluoroscopy time and the mean catheter force.2.Unsuccessful single-circle isolation is a independent impact factor of PAF after RFCA.