Introduction: Despite the clinical recomendations we decided to find the initial clinical electro-mechanical patterns in patients with successful RFA in the late postoperative period.
Methods: The clinical cohort study was held in 2010-2012 and includes 94 patients (49 male) with lone paroxysmal (36,2%), persistent (31,9%) and long standing persistent (31,9%) AF. All patients underwent electroanatomical CFAE mapping and PVI with endocardial linear “box lesion” ablation. The evaluation of initial electroanatomical patterns was assessed after the end of clinical trial (up to 3 years of follow-up)
Results: Only 34 (36,2%) patients had synus rhythm in the end of the study without AAT. In this group LA parameters were less than in patient with AF after procedure (M(q1q3)): surface area - 99,21 (71,81;124,91) and 129,11 (112,75;172,51) cm2; volume – 91 (82,75;123) and 140 (120;195,5) ml; CFAE duration – 87 (79,5;118,5) and 158 (118;185,5) msec; CFAE area size – 10,3 (9,7;20,2) and 25,7 (16,2;30,35) cm2, HR 0,339 (0,145;0,793) and 4,6 (1,57;13,5).
Conclusions: Endocardial “box lesion” ablation can be reasonable in patients with paroxysmal and early persistent AF and possible reverse remodeling of LA.