Abstract

BackgroundThe detection of Nonvalvular atrial fibrillation (NVAF) in AIS patients may be elusive and require further investigation such as electrocardiography (ECG) and Holter monitoring. The objective of this study is to evaluate the N-terminal pro B-type natriuretic peptide (NT-proBNP) diagnostic value for NVAF and the clinical outcome of AIS patients. MethodsWe conducted a retrospective study of AIS patients in ten hospitals of the Shaanxi province. All NVAF patients and matched patients without NVAF admitted within 7 days after stroke onset were included in our study. The admission NT-proBNP receiver operating characteristic curve was drawn to determine the discriminative power of NT-proBNP in NVAF identification. Multivariate logistic regression analysis was used to examine the odds ratios (OR) of NT-proBNP for NVAF and identify the potential factors associated with the clinical outcomes in AIS patients. ResultsA total of 275 NVAF cases and 275-matched controls were included in the current study. NT-proBNP was independently associated with NVAF (OR = 64.047, 95% confidence interval [CI]: 30.298–135.390, p < .001) in AIS patients. The optimal cutoff point for the NT-proBNP level to distinguish the NVAF group from the non-NVAF group was 431.0 pg/ml, with an area under curve [AUC] of 0.910 (95% CI: 0.885–0.935, p < .001). The high NT-proBNP level (OR: 3.284, 95% CI: 1.830–5.896, p < .001) was an independent indicator that was positively related to hospitalization mortality. ConclusionThe rise of the serum NT-proBNP level at first admission added great contributions to the NVAF diagnosis after AIS, and was independently associated with the hospitalization mortality of AIS patients.

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