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Electrophysiologic actions of dl-sotalolin patients with persistent atrial fibrillation

^* Cardiology Division, Department of Medicine, University of Hong Kong, Queen Mary Hospital, Hong Kong, China

View larger version (17K): [in a new window]   Figure 1 Relationship between the pacing cycle length and atrial effective refractory periods (ERPs) measured in the high right atrium (HRA) (A) and distal coronary sinus (DCS) (B) in patients with atrial fibrillation (AF) and control subjects before and after intravenous infusion of dl-sotalol. Solid squares = control subjects at baseline; solid triangles = patients with AF at baseline; open squares = control subjects after dl-sotalol infusion; open triangles = patients with AF after dl-sotalol infusion.

View larger version (16K): [in a new window]   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.