*After the 1st ΜΙ ablation attempt. **Unsuccessful MI ablation after the 1st procedure (n=4) or PMF occurrence due to overt MI conduction recurrence (n=1). †Group B vs. Group A, p= 0.0002; Group B vs. Group C, p=0.0396, ††Group B vs. Group A, p= 0.0209, ‡Group B vs. Group A, p= 0.0246, ‡‡Group B vs. Group A, p= 0.003; Group B vs. Group C, p= 0.0004,^§Group B vs. Group A, p= 0.0207; Group B vs. Group C, p= 0.0090. ^§§More than 50% of the documented arrhythmia burden. ^#Systemic AAD therapy, over a period of more than 3 months within the follow-up period (excluding the first 3 months of the blanking period). AF: Atrial fibrillation, AT: Atrial tachycardia, MI: Mitral isthmus, PMF: Perimitral atrial flutter .