2. METHODS
Patient population
The study population comprised consecutive patients who underwent MI catheter ablation, from January 2018 to January 2020, either as part of a specific AF ablation strategy, or to treat clinical reentrant AT, or to treat AT that occurred during ablation for AF. All patients underwent baseline evaluation with clinical history, physical examination, electrocardiogram, and a transthoracic echocardiogram. The definitions and terminology regarding AF in this article are in agreement with the latest HRS/EHRA/ECAS/APHRS/SOLAECE Expert Consensus Statement on Catheter and Surgical Ablation of AF [22]. All patients provided written informed consent. The study protocol was approved by the hospital’s institutional review board. The study complied with the Declaration of Helsinki.