High serum levels of pro-brain natriuretic peptide (pro BNP) identify cardioembolic origin in undetermined stroke

Manuel Rodríguez-Yáez, Tomás Sobrino, Miguel Blanco, Natalia Pérez De La Ossa, David Brea, Raquel Rodríguez-González, Rogelio Leira, Antonio Dávalos, José Castillo

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    Abstract

    Background: Stroke subtype diagnosis leads to specific therapies to reduce recurrences. Because nearly one third of patients remain with unknown etiology after a complete screening workup, we aim to investigate whether molecular markers of myocardial damage were associated with cardioembolic stroke and if they were useful to reclassify strokes of undetermined etiology. Methods: We included 262 patients with first ischemic stroke within the first 12 hours. Stroke subtype was evaluated by TOAST criteria. Stroke of undetermined origin were reclassified into likely atherothrombotic or likely cardioembolic according to a predefined non-validated algorithm. Blood samples were obtained on admission to determine serum levels of molecular markers (pro-BNP, pro-ANP and CK-MB) of myocardial damage. Results: Patients with cardioembolic infarct showed higher levels of pro-BNP, pro-ANP and CK-MB. Pro-BNP > 360 pg/mL was independently associated with cardioembolic stroke (OR: 28.51, CI95%: 5.90-136.75, p< 0.0001). Stroke etiology was undetermined in 82 patients (31%); 34 were reclassified as likely cardioembolic, 22 as likely atherothrombotic, and 26 remained as undetermined. Pro-BNP > 360 pg/mL was the only factor independently associated with likely cardioembolic stroke. Conclusions: Pro-BNP levels higher than 360 pg/mL are associated with cardioembolic stroke and may be useful to reclassify undetermined strokes as of cardioembolic origin. © 2009 - IOS Press and the authors. All rights reserved.
    Original languageEnglish
    Pages (from-to)189-195
    JournalDisease Markers
    Volume26
    Issue number4
    DOIs
    Publication statusPublished - 1 Jan 2009

    Keywords

    • Brain natriuretic peptide
    • Cardioembolic stroke
    • Ischemic stroke
    • Ischemic stroke classification

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    Rodríguez-Yáez, M., Sobrino, T., Blanco, M., De La Ossa, N. P., Brea, D., Rodríguez-González, R., Leira, R., Dávalos, A., & Castillo, J. (2009). High serum levels of pro-brain natriuretic peptide (pro BNP) identify cardioembolic origin in undetermined stroke. Disease Markers, 26(4), 189-195. https://doi.org/10.3233/DMA-2009-0630