Case Report (n=1)
Combined use of noninvasive ECGI and high-density contact mapping can successfully identify and guide ablation of complex focal atrial tachycardias with epicardial origins and dual endocardial exits.
We report a case of recurrent focal atrial tachycardia (AT) which mechanisms could be resolved by using noninvasive electrocardiographic imaging (ECGI) reconstructing epicardial potentials and rapid high‐density endocardial contact mapping (Rhythmia™, Boston Scientific, Natick, MA, USA). ECGI demonstrated focal activity from the anterior of the left superior pulmonary vein antrum, although Rhythmia™ showed focal activity from the high anterior left atrium with the 2 nd focus originating from the site where identical to the focus on the ECGI map with slightly delay (by 8 ms). Elimination of the AT by radiofrequency applications for both of the endocardial focuses indicated the dual endocardial exits from an epicardial focus.
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Yamashita et al. (2018) conducted a case report in Recurrent focal atrial tachycardia (n=1). Noninvasive electrocardiographic imaging (ECGI) and high-density endocardial contact mapping was evaluated on Elimination of atrial tachycardia.
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