Click on image to view larger version.

Figure 2 Relationship between the pacing cycle length and prolongation of atrial effective refractory periods (ERPs) after intravenous infusion of dl-sotalol in the high right atrium (HRA) (A) and distal coronary sinus (DCS) (B) in patients with atrial fibrillation (AF) and control subjects. Data are presented as the mean value ± SD of the prolongation of ERPs. Solid diamonds = control subjects; open circles = patients with AF. *p < 0.05 vs. control subjects.