![]() Success rates were 83% in patients without and 73% in patients with inducible arrhythmias at the end of the procedure (p=NS).ĬTI ablation, in addition to PV isolation, significantly reduced the number of patients with inducible atrial arrhythmias and inducible AF. After one year of follow-up, 23 patients (79%) had no recurrence of arrhythmia. 9/29, p=0.016) and of combined AF and atypical AFL inducibility (19 vs. There was a significant reduction of AF inducibility (16 vs. After CTI ablation, only 11 patients (38%) maintained arrhythmia inducibility (p<0.001)-AF in nine and atypical AFL in two. Of the 29 patients, 26 (90%) had an inducible arrhythmia before CTI ablation-AF in 16, typical atrial flutter (AFL) in seven and atypical AFL in three. Atrial arrhythmias were considered inducible if they persisted for more than 60 seconds. This code is used to bill for catheter-based radiofrequency ablation procedures that target the abnormal electrical activity in the heart responsible for atrial flutter. Atrial arrhythmia inducibility was tested with burst pacing down to 150 ms or atrial refractoriness from the proximal coronary sinus. The CPT code for ablation of atrial flutter is 93662. ![]() The procedure was performed using a CARTO-Merge mapping system, one or two Lasso catheters, an irrigated ablation catheter and radiofrequency energy. In 29 consecutive patients (23 male, mean age 54.6+/-11.4 years, 11 (38%) with hypertension and four (14%) with structural heart disease, mean left atrial dimension 43+/-6 mm) undergoing PV isolation for paroxysmal or persistent AF, atrial arrhythmia inducibility was tested before and after CTI ablation. The aim of this study is to assess whether CTI ablation after PV isolation reduces inducibility of atrial arrhythmias, particularly AF. Non-inducibility after AF ablation is associated with a higher success rate. A cavotricuspid isthmus (CTI) block may be an easier and safer alternative to left atrial lines for this purpose. In AF ablation, after pulmonary vein (PV) isolation, substrate modification can be increased by performing linear lesions in the left atrium that reduce the fibrillatory surface. Maintenance of atrial fibrillation (AF) depends on the presence of multiple reentrant circuits in the atria.
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