Chouihed T, et al. - In this study including 1,369 patients who were admitted for dyspnea in the emergency department (ED) in 2015, researchers examined if and how discharge diagnosis of acute heart failure (AHF) and in-hospital mortality were related to the first estimated plasma volume status (ePVS) calculated from blood samples on admission in the ED. By assessing hematocrit and hemoglobin values at admission, the ePVS was calculated. They compared baseline characteristics according to ePVS tertiles. Thereafter, a logistic regression model was used to evaluate links between ePVS and the two outcomes “AHF diagnosis” and “intra-hospital mortality”. Findings revealed a higher probability of AHF and in-hospital mortality in relation to higher ePVS values determined from first blood sample at admission in patients admitted in the ED for acute dyspnea.