Non‐invasive isthmus identification of complex arrhythmias in congenital heart disease

Sustained re‐entrant tachyarrhythmias treatment has become pivotal in the grown‐up congenital heart patients clinical management. Cardiac LGE‐MRI tissue characterization integrated with high definition electroanatomic map could allow fast recognition and effective treatment of substrate of tachyarrhythmias. Cardiac LGE‐MRI areas were suggestive of post‐surgical changes both in atrium and ventricle. High‐density electro‐anatomical map localized areas of slow conduction identifying conducting isthmuses of re‐entrant arrhythmias. [Image: see text]