Figure 2. Pacing maneuvers indicative of MI block and PMF. A: Pacing from LAA with MI conduction before MI ablation in the 1st procedure. B. Pacing from LAA with complete reversal in CS sequence after MI ablation in the 1stprocedure. C: Pacing superiorly of the MI line at the beginning of the 2nd procedure before any ablation. D: Clockwise PMF with CL=250ms. E: Termination of the arrhythmia by ablating the gap in MI (Video 3). F: Reconfirmation of MI block.