Endocardial Mapping of Left Atrium for Evaluation of Concomitant Surgical Ablation Lesions

Concomitant ablation is an effective treatment for patients with various types of atrial fibrillation undergoing heart surgery. However, recurrences of tachycardias after concomitant ablation can happen and seem to be mostly related to reentry mechanism resulting in atrial tachycardias. The aim of the study is to perform invasive re-mapping of ablated regions in the atria to assess durability of ablation lesions and prevalence of conduction gaps that can be targets for additional ablation to lower longterm arrhythmia recurrence.