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The risk and severity of stroke in patients with atrial fibrillation and gout: A National Representative Database study.

Haddadin F, Arevalo AB, Jabri A, Beydoun H, Fram F, Munoz Estrella A, Karim S, Virani S, Ali Y. The risk and severity of stroke in patients with atrial fibrillation and gout: A National Representative Database study. Journal of arrhythmia. 2021 Apr 1; 37(2):394-399.

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BACKGROUND: It has been shown that gout is associated with left atrium remodeling and a pro-inflammatory state leading to the development of atrial fibrillation (AF). There is limited evidence whether gout increases the risk of stroke in patients with AF. We assessed the incidence of gout and the risk of stroke in patients with AF. METHODS: This is a retrospective cohort study using the 2016 US National Inpatient Sample (NIS) based on ICD-10 codes. The outcomes of the study were the risk and severity of new stroke in patients with pre-existing AF and gout. RESULTS: In 2016, we identified 3 844 057 patients admitted to the hospitals in NIS with history of AF, of which 240 875 had history of gout. Patients with AF and gout have higher risk of new stroke (OR 2.07 [1.97-2.19],   <  .001), and this risk remains significantly elevated after adjusting for CHADS2VASC score variables, chronic kidney disease, dyslipidemia, obesity, and race (OR 1.10 [1.01-1.11],   =  .041). However, presence of gout in patients with AF was not associated with all-cause in-hospital mortality, need for mechanical ventilation, percutaneous gastrostomy tube insertion, or discharge to skilled nursing facility. CONCLUSION: Subjects with AF and gout compared to AF alone had an increased risk of new stroke, but presence of gout was not associated with stroke severity. There is a potential role of gout as a risk factor or a risk marker for stroke in subjects with AF.

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