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Figure 2 Freedom from all symptomatic atrial fibrillation (AF) in each randomized pacing mode in study population receiving concomitant class 1 or 3 antiarrhythmic drugs (AAD+ on the left) or without concomitant drug therapy (AAD– on the right). Dual right atrial (RA) pacing but not high RA pacing shows prolongation of time interval to AF recurrence as compared with support pacing and a trend to prolongation as compared with high RA pacing in drug-treated patients. There is no difference in outcome in patients on any randomized pacing mode without concomitant drug therapy. AAD = antiarrhythmic drug.