NPPB and cardioembolic stroke: Moreover, Bai J. et al. [77] reported that both BNP (sensitivity = 65% (95% CI: 63%–68%) and specificity = 85% (95% CI: 83%–87%)) and NT-proBNP (sensitivity = 55% (95% CI: 52%–59%) and specificity = 93% (95% CI: 91%–94%)) were associated with cardioembolic stroke.