Acute success rate is almost 95% in the registries.(1) However, at 5 year follow-up almost 70% of these patients might develop atrial fibrillation or atypical atrial flutter, which is probably related to the baseline characteristics, structural heart disease and uncontrolled risk factors. See here, previous article on flutter’s differential diagnoses and treatment approaches). (For a closer look at ablation, see previous e-journal articles on rhythmologist's view on the patient after the procedure, or surgeons' look at procedure in lone atrial fibrillation. The ablation procedure's main target is to achieve bidirectional block through the cavotricuspid isthmus (CTI). After the first episode of AFL-I (Class IIa indication), especially in those presenting with poor hemodynamic tolerance or tachymiocardiopathy.
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