Figure 3.

Charge density map after posterior wall isolation (Patient 9). Charge density map with the AcQmap^TM catheter after pulmonary vein isolation (PVI) + left atrial posterior wall isolation (LAPWI). Each color point on the map corresponds to the color-matched legend on the left. (A) Atrial fibrillation cycle length (AFCL) map: left side, anterior-posterior view; right side, posterior-anterior view. When compared with the baseline and post-PVI maps, the AFCL is higher, especially in the roof and posterior regions. Color bar describes AFCL in ms. (B) LIA map: left side, anterior-posterior view; right side, posterior-anterior view. After PVI + LAPWI, there is a significant reduction in LIA in the inferior region. Color bar describes LIA in LIA/s. (C) LRA map: left side, anterior-posterior view; right side, posterior-anterior view. After PVI + LAPWI, there is a significant reduction in LRA in the inferior region. Color bar describes LRA in LRA/s. (D) FCA map: left side, anterior-posterior view; right side, posterior-anterior view. Higher FCA number in the anterior and posterior regions with no significant change after PVI + LAPWI. Color bar describes FCA in FCA/s. FCA: focal centrifugal activation; LIA: localized irregular activation; LRA: localized rotational activation.