AF complexity. Increasing complexity of AF stratified by clinical classification of
paroxysmal, persistent, and long-standing persistent AF. With increasing AF duration, ECGI
imaged more focal sites and wavelets (ANOVA for wavelet P=0.11; focal sites, P=0.031).
Asterisk denotes P < 0.05 compared to paroxysmal. Double asterisk denotes P
< 0.05 compared to both paroxysmal and persistent. (Adapted from Cuculich PS, Wang
Y, Lindsay BD, et al. Noninvasive characterization of epicardial activation in humans with
diverse atrial fibrillation patterns. Circulation 2010;122:1364–1372; with
permisson).