Long-term health-related quality of life and rhythm outcomes of catheter ablation versus antiarrhythmic drugs in patients with atrial fibrillation

Abstract

BackgroundData on long-term effects of catheter ablation vs antiarrhythmic drugs (AADs) on health-related quality of life (HRQoL) and atrial fibrillation (AF) burden are limited. ObjectiveThe study aimed to assess long-term HRQoL and rhythm data in patients with symptomatic AF. MethodsThe 75 patients who underwent ablation and 74 receiving AAD in the Catheter Ablation compared with Pharmacological Therapy for Atrial Fibrillation trial were followed for 48 months. The General Health subscale of the 36-Item Short-Form Health Survey, time to first AF episode ≥1 hour, and AF burden, recorded by implantable cardiac monitors, were compared. ResultsOne hundred forty-seven patients completed follow-up, with 7 crossovers in the ablation group and 34 crossovers in the AAD group. General Health improved by ablation from a median of 62 points at baseline to 79.2 points at follow-up (P < .001) and by AAD from a median of 67 to 77 points (P < .001), without treatment differences (P = .77). Time to first AF episode ≥1 hour was longer (median 257 days in the ablation group vs 180 days in the AAD group; P = .025). The cumulative AF burden during follow-up was lower in the ablation group (median 0.3%; interquartile range [IQR] 0%–1.4%) than in the AAD group (1.6%; IQR 0.1%–11.0%) (P = .01). The cumulative reduction in AF burden compared with baseline was greater in the ablation group (median −89.5%; IQR −98.4% to −51.3%) than in the AAD group (−52.7%; IQR −92.6% to 263.6%); P < .001). ConclusionHRQoL improvement at long-term did not differ between ablation and AAD groups despite a larger reduction in AF burden after ablation. The results should be interpreted in the light of a high crossover rate in the AAD group.