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  • Title: Peripheral arterial disease and atrial fibrillation and risk of stroke, heart failure hospitalization and cardiovascular death: A nationwide cohort study.
    Author: Lin YS, Tung TH, Wang J, Chen YF, Chen TH, Lin MS, Chi CC, Chen MC.
    Journal: Int J Cardiol; 2016 Jan 15; 203():204-11. PubMed ID: 26512838.
    Abstract:
    BACKGROUND: Peripheral arterial disease (PAD) and atrial fibrillation (AF) share several comorbidities and contribute to similar cardiovascular (CV) outcomes. Only few studies have evaluated the correlation between PAD, AF, and their interaction effects on CV outcomes. METHODS: We included 597,164 adults from Taiwan's National Health Insurance Research Database to conduct a cohort study to assess whether PAD was an independent risk factor of AF and vice versa. We also examined if PAD and AF increased the incident stroke, heart failure hospitalization and CV death. RESULTS: People with PAD had a significant higher risk of incident AF than those without PAD [adjusted hazard ratio (HR): 1.29, 95% confidence interval (CI): 1.17-1.42]. Meanwhile, people with AF did not have an increased risk of incident PAD compared to those without AF (adjusted HR: 1.00, 95% CI: 0.89-1.11). Both AF and PAD increased the risk of stroke [adjusted HR being 1.29 (95% CI: 1.17-1.43) and 1.41 (95% CI: 1.35-1.47), respectively], heart failure hospitalization [adjusted HR being 1.96 (95% CI: 1.77-2.17) and 1.35 (95% CI: 1.28-1.42), respectively], and CV death [adjusted HR being 3.33 (95% CI: 2.58-4.30) and 2.08 (95% CI: 1.80-2.41), respectively]. However, we found no interaction effects of AF and PAD on these outcomes. CONCLUSIONS: PAD is an independent risk factor of incident AF but not vice versa. Both PAD and AF are independent risk factors for stroke, heart failure hospitalization, and CV death.
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