Paroxysmal atrial fibrillation ablation: Achieving permanent pulmonary vein isolation by point-by-point radiofrequency lesions

Figure 1 Contact force variability according to left atrium anatomy. Contact force (CF) is expressed in grams (g; median and 25^th-75^th percentile) and the number of pulmonary veins segments with conduction gaps (bold) in the CF-on group (dark gray) and the CF-off group (light gray). Reproduced with permission from Pedrote et al[24].