Wussler D, et al. - Given that the MEESSI-AHF (Multiple Estimation of risk based on the Emergency Department Spanish Score In patients with AHF) score was created to predict 30-day mortality in patients presenting with acute heart failure (AHF) to emergency departments (EDs) in Spain, researchers externally validated the MEESSI-AHF score in another country. One thousand, five hundred seventy-two patients with AHF were included in the external validation cohort. According to this prospective cohort study, external validation of the MEESSI-AHF risk score exhibited excellent discrimination. If the score is introduced to new populations, recalibration may be required.