Figure 2 . Voltage and activation maps after CBA.
A: Posterior–anterior (PA) view of the voltage map before CBA. Local
electrograms were acquired during AF.
B: PA view of the voltage map after CBA. After CBA including LA roof
ablation, cardioversion was delivered, and mapping after CBA was
performed during sinus rhythm. A broad scar area was observed beyond PVs
in the LAPW around the LA roof.
C: PA view of the activation map after CBA. The activation map during
sinus rhythm shows conduction from caudal to cranial in the LAPW. The
activation propagates from red to purple.
AF, atrial fibrillation; CBA, cryoballoon ablation; LA, left atrial;
LAPW, left atrial posterior wall; PV, pulmonary vein.