RT Journal Article T1 N-Terminal Pro B-Type Natriuretic Peptide's Usefulness for Paroxysmal Atrial Fibrillation Detection Among Populations Carrying Cardiovascular Risk Factors. A1 Palà, Elena A1 Bustamante, Alejandro A1 Clúa-Espuny, Josep Lluis A1 Acosta, Juan A1 Gonzalez-Loyola, Felipe A1 Ballesta-Ors, Juan A1 Gill, Natalia A1 Caballero, Andrea A1 Pagola, Jorge A1 Pedrote, Alonso A1 Muñoz, Miguel Angel A1 Montaner, Joan K1 NT-proBNP K1 atrial fibrillation K1 biomarker K1 screening K1 stroke AB Background: Atrial fibrillation (AF) systematic screening studies have not shown a clear usefulness in stroke prevention, as AF might present as paroxysmal and asymptomatic. This study aims to determine the usefulness of some blood-biomarkers to identify paroxysmal atrial fibrillation in the context of a screening programme. Methods: A total of 100 subjects aged 65-75 years with hypertension and diabetes were randomly selected. AF was assessed by conventional electrocardiogram (ECG) and 4 weeks monitoring with a wearable Holter device (Nuubo™). N-terminal pro B-type natriuretic peptide (NT-proBNP), apolipoprotein CIII (ApoC-III), von Willebrand factor (vWF), ADAMTS13, urokinase plasminogen activator surface receptor (uPAR), and urokinase plasminogen activator (uPA) were determined in serum/plasma samples and the levels were compared depending on AF presence and mode of detection. Results: The AF prevalence in the studied population was found to be 20%. In seven subjects, AF was only detected after 1 month of Holter monitoring (hAF group). NT-proBNP levels were higher in subjects with AF compared with subjects with no AF (p 95 pg/ml cut-off showed high sensitivity and specificity to detect AF (95%, 66.2%) or hAF (85.72%, 66.2%) and was found to be an independent predictor of AF and hAF in a logistic regression analysis. NT-proBNP correlated with AF burden (r = 0.597, p = 0.024). Conclusion: NT-proBNP was elevated in AF cases not identified by ECG; thus, it may be used as a screening biomarker in asymptomatic high-risk populations, with a promising cut-off point of 95 pg/ml that requires further validation. SN 1664-2295 YR 2019 FD 2019-11-29 LK https://hdl.handle.net/10668/27193 UL https://hdl.handle.net/10668/27193 LA en DS RISalud RD Apr 8, 2025