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Vitolo, Marco; Malavasi, Vincenzo L.; Proietti, Marco; Diemberger, Igor; Fauchier, Laurent; Marin, Francisco; Nabauer, Michael; Potpara, Tatjana S.; Dan, Gheorghe-Andrei; Kalarus, Zbigniew; Tavazzi, Luigi; Maggioni, Aldo Pietro; Lane, Deirdre A.; Lip, Gregory Y. H. and Boriani, Giuseppe (2022): Cardiac troponins and adverse outcomes in European patients with atrial fibrillation: A report from the ESC-EHRA EORP atrial fibrillation general long-term registry. In: European Journal of Internal Medicine, Vol. 99: pp. 45-56

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Background: Cardiac troponins (cTn) have been reported to be predictors for adverse outcomes in atrial fibrillation (AF), patients, but their actual use is still unclear. Aim: To assess the factors associated with cTn testing in routine practice and evaluate the association with outcomes.& nbsp;Methods: Patients enrolled in the ESC-EHRA EORP-AF General Long-Term Registry were stratified into 3 groups according to cTn levels as (i) cTn not tested, (ii) cTn in range (& LE;99th percentile), (iii) cTn elevated (> 99th percentile). The composite outcome of any thromboembolism /any acute coronary syndrome/cardiovascular (CV) death, defined as Major Adverse Cardiovascular Events (MACE) and all-cause death were the main endpoints.& nbsp;Results: Among 10 445 AF patients (median age 71 years, 40.3% females) cTn were tested in 2834 (27.1%). cTn was elevated in 904/2834 (31.9%) and in-range in 1930/2834 (68.1%) patients. Female sex, in-hospital enrollment, first-detected AF, CV risk factors, history of coronary artery disease, and atypical AF symptoms were independently associated with cTn testing. Elevated cTn were independently associated with a higher risk for MACE (Model 1, hazard ratio [HR] 1.74, 95% confidence interval [CI] 1.40-2.16, Model 2, HR 1.62, 95% CI 1.28-2.05;Model 3 HR 1.76, 95% CI 1.37-2.26) and all-cause death (Model 1, HR 1.45, 95% CI 1.21-1.74;Model 2, HR 1.36, 95% CI 1.12-1.66;Model 3, HR 1.38, 95% CI 1.12-1.71).& nbsp;Conclusions: Elevated cTn levels were associated with an increased risk of all-cause mortality and adverse CV events. Clinical factors that might enhance the need to rule out CAD were associated with cTn testing.

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