Durability of Left Atrial Lesions After Ethanol Infusion in the Vein of Marshall

Background Ethanol infusion in the vein of Marshall (EIVM) has shown to be effective for treating atrial fibrillation (AF) and perimitral left atrial (LA) flutter (PMLAF). Aims To assess the persistence of LA lesions created by EIVM by electro-anatomical mapping (EAM) at repeated procedure for recurrent atrial tachycardia (AT) or AF. Methods We included consecutive patients who underwent EIVM then repeated CA for recurrent AT or AF with high-definition EAM in a single center. Acute and long term EIVM effect was assessed at the index and redo procedures by comparing the area of bipolar voltage