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Pol. Arch. Med. Wewn. · Mar 2024
Does the atrial fibrillation still increase the risk of death? Results from the NOMED study in one-year follow-up.
- Katarzyna Mitrega, Beata Sredniawa, Adam Sokal, Witold Streb, Jacek Kowalczyk, Grzegorz Opolski, Tomasz Grodzicki, Krzysztof Rewiuk, Jaroslaw Kazmierczak, Lukasz Wierucki, Tomasz Zdrojewski, and Zbigniew Kalarus.
- Department of Cardiology, Silesian Center for Heart Diseases, Zabrze, Poland. kas-k2@o2.pl
- Pol. Arch. Med. Wewn. 2024 Mar 27; 134 (3).
IntroductionAlthough atrial fibrillation (AF) is a well‑known risk factor for ischemic stroke and hospitalization, its effect on mortality has not been clearly established.ObjectivesWe aimed to assess whether AF is an independent risk factor for death. A secondary objective was to evaluate the role of oral anticoagulation in the prevention of stroke and death in 1‑year follow‑up of patients included in the NOMED‑AF (Noninvasive Monitoring for Early Detection of Atrial Fibrillation) study.Patients And MethodsThe NOMED‑AF study included 3014 patients. The participants underwent continuous long‑term electrocardiographic monitoring using a wearable vest for up to 30 days. The present analysis involved 2795 patients who completed the 1‑year follow‑up. The median (interquartile range) follow‑up time was 365 (365-365) days. AF was diagnosed in 617 participants.ResultsIndependent risk factors for death in the patients who completed the 1‑year follow‑up were AF, age equal to or above 65 years, and chronic kidney disease. The individuals with diagnosed AF had an almost 2‑fold higher risk of death (odds ratio [OR], 1.7; 95% CI, 1.18-2.44; P <0.001) and a 2.5‑fold higher risk of stroke (OR, 2.53; 95% CI, 1.41-4.44; P <0.001), as compared with those without an AF diagnosis. The participants with AF who received oral anticoagulants had an almost 5‑fold lower risk of death than those who were not on anticoagulation (2.9% vs 14.2%, respectively; P <0.001).ConclusionsAF is an independent risk factor for death and cardiovascular hospitalization. The risk of death and stroke in patients with AF is significantly higher than in the patients without this arrhythmia. Oral anticoagulation in patients with AF significantly reduces the rates of death and stroke; however, its use is suboptimal in this group of patients.
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