Abstract

AimsWe evaluated the impact of early rhythm control (ERC) on diabetes-related complications and mortality in subjects with type 2 diabetes mellitus (T2DM) and atrial fibrillation (AF). MethodsThis observational cohort study based on the Korean National Health Insurance Service claims database from 2009 to 2016, divided newly diagnosed AF patients with T2DM into ERC or usual care groups based on receiving rhythm control treatment within 1 year of AF diagnosis. The primary outcome was ischemic stroke, and the secondary outcomes were macro/microvascular complications, and all-cause death. ResultsAmong 47,509 subjects (mean age 66.7 ± 10.5 years; 61.8 % men; mean CHA2DS2-VASc score 4.6 ± 1.8; mean follow-up 4.3 ± 2.3 years; mean DM duration 5.6 ± 4.7 years), 23.1 % received ERC, and 76.9 % did not (usual care group). ERC was associated with lower risks of ischemic stroke, macrovascular and microvascular complications, and all-cause death compared to usual care (adjusted hazard ratios [95 % confidence interval]: 0.77 [0.70–0.85], 0.79 [0.73–0.86], 0.86 [0.82–0.90], and 0.92 [0.87–0.98], p < 0.001, <0.001, <0.001, and 0.012, respectively). ConclusionsEarly rhythm control was associated with reduced risks of diabetes-related complications and mortality in subjects with T2DM and AF. Rhythm control within 1 year of AF diagnosis with proper anticoagulation should be considered to prevent adverse outcomes.

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