ArticleJournal of the Saudi Heart Association2023
Better Survival in Morbidly Obese Patients with Atrial Fibrillation Treated with Non-vitamin K-dependent Oral Anticoagulants.
Article in Journal of the Saudi Heart Association, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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7 authors at 2 institutions in 1 country.
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Abstract
Background: The efficacy and safety of non-vitamin K-dependent anticoagulants (NOAC) are not well investigated in the obese population, and fixed dosing could lead to under-anticoagulation. Our objective was to evaluate the effect of obesity on anticoagulation outcomes and survival in non-valvular atrial fibrillation (AF) patients. Methods: We enrolled 755 patients who required anticoagulation for AF from 2015 to 2016. We grouped the patients into four groups. Group 1 (n = 297) included patients with BMI< 40 kg/m2 treated with NOACs, Group 2 (n = 358) included patients on warfarin with BMI< 40 kg/m2, Group 3 (n = 57) had patients on NOACs with BMI≥ 40 kg/m2 and Group 4 (n = 43) included patients on warfarin and BMI≥ 40 kg/m2. Study outcomes were the composite endpoint of stroke, bleeding, and survival. Results: Competing risk regression showed that stroke and bleeding were not affected by obesity or treatment (SHR: 1.09 (95% CI: 0.79-1.51); P = 0.62). Older age was the predictor of stroke/bleeding (HR:1.03 (95% CI:1.01-1.06); P = 0.02). Predictors of mortality were heart failure (HR:2.23 (95% CI:1.25-3.97); P = 0.007), lower creatinine clearance (HR: 0.98 (95% CI:0.97-0.98): P < 0.001), non-obese patients on warfarin (HR:3.51 (95%CI:1.6-7.7): P = 0.002) and obese patients on warfarin (HR: 6.7 (95% CI:2.51-17.92); P < 0.001). Conclusion: NOACs could have a similar risk profile to warfarin in obese and non-obese patients with non-valvular AF but could have better survival. Larger randomized trials are recommended.
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