• Crit Pathw Cardiol · Mar 2013

    Long-term prognostic value of dysglycemia and ischemic vascular disease beyond abnormal troponin levels in patients presenting acute atrial fibrillation.

    • Alberto Conti, Yuri Mariannini, Claudio Poggioni, Gabriele Viviani, Margherita Luzzi, Niccolò De Bernardis, Luigi Padeletti, and Gian Franco Gensini.
    • Emergency Medicine, Department of Critical Care Medicine and Surgery, Careggi University Hospital, Florence, Italy. aaaconti@hotmail.com
    • Crit Pathw Cardiol. 2013 Mar 1;12(1):14-23.

    BackgroundPrognostication beyond troponin levels in patients with acute atrial fibrillation (AF) is still unclear.MethodsOne-month and 1-year outcomes in 1091 patients with acute AF were analyzed. Primary endpoints were stroke or the composite of acute coronary syndrome, revascularization, and death.ResultsIn the short term, troponin (odds ratio (OR) 15, 95% confidence interval (CI), 3.4-67.9, P < 0.001) and known ischemic heart disease (OR 5.83, 95% CI, 1.3-26.2, P = 0.021) were predictors of the composite endpoint, with multivariate analysis. No variables linked with stroke. In the long term, metabolic syndrome (OR 4.7, 95% CI, 1.2-18.3, P = 0.024) and age (OR 1.1, 95% CI, 1.0-1.1, P = 0.009) were predictors of stroke; metabolic syndrome (OR 4.3, 95% CI, 1.6-11.0, P = 0.003), known ischemic heart disease (OR 3.3, 95% CI, 1.7-6.4, P = 0.001), persistence of AF after the first-line approach (OR 2.2, 95% CI, 1.2-4.3, P = 0.018), and age (OR 1.0, 95% CI, 1.0-1.1, P = 0.025), but not troponin so were of the composite endpoint. In the short term, increased discriminative values in prognostication of the composite endpoint were observed with C-statistic when troponin was compared with dysglycemia (P = 0.032). No variables did better than others in the prognostication of stroke. In the long term, increased discriminative values in the prognostication of stroke were observed with C-statistic when age was compared with troponin (P = 0.020), ischemic heart disease (P = 0.025), and persistence of AF after the first-line approach (P = 0.049); so was for CHADS2 score ≥1 versus vascular disease (P = 0.038).ConclusionsIn patients with acute AF, abnormal troponin levels add prognostic value to clinical parameters in the short term; dysglycemia and known vascular disease in the long term.

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