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Abstract Objective To evaluate whether ablation of atrial tachycardia(AT) during persistent atrial fibril ation(AF) ab-lation wil influence the prognosis. Methods AT occurred in 86 AF patients underwent a stepwise approach ablation. Of them, AT was terminated by ablation in 43 cases (termination group) and only by electrical cardioversion rather than abla-tion in another 43 cases (non-termination group). The recurrence of atrial tachyarrhythmia (ATa) was determined and compared between the two groups during fol ow-up of 2 years. Results 55 cases (63.95%) maintained sinus rhythm and 31 cases(36.05% ) had recurrence of ATa. The recurrence rate of ATa was 27.91% in termination group and 44.19% in non-termination group. There was no significant difference between the two groups. Left atrial dimension was significantly smal er in patients with sinus rhythm (41.78±7.95mm)than with recurrence of ATa (45.85±8.51mm) (P<0.05). Conclu-sion Whether AT terminated by ablation or not during persistent AF ablation does not influence the recurrence of ATa.
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