Carrillo, ALopez, ACarrillo, LCaldeira, VGuia, MAlonso, NRenedo, AQuintana, MSanchez, JEsquinas, A2023-08-172023-08-172020-12J Crit Care . 2020 Dec;60:152-158.http://hdl.handle.net/10400.17/4647Introduction: The HACOR scale is a clinical score that can predict early failure of NIV in hypoxemic acute respiratory failure (ARF) The aim of this study is to analyze the validity of the HACOR scale. Methods: A retrospective study of a cohort of over 2749 episodes on 2711 consecutive patients requiring NIV for hypoxemic ARF in a polyvalent intensive care unit. The scale was measured before starting NIV and at 1, 6, 12, 24 and 48 h after the initiation of NIV. Results: NIV failure occurred in 963 patients (35%). The value of the HACOR scale before NIV did not differ between success and failure. However, at 1, 6, 12, 24 and 48 h of NIV, the scale values clearly differed between the two groups. The HACOR scale at NIV initiation accurately predicts NIV failure in the first hour, with an optimal cut-off value of 8 points. The AUC for predicting NIV failure with HACOR at 1 h is greater than 0.9 in patients with pneumonia and adult respiratory distress syndrome (ARDS). Conclusions: The HACOR scale measured at 1 h after NIV initiation accurately predicts NIV failure, especially in pneumonia and ARDS.engHSM PNEUHumansAgedMaleFemaleMiddle AgedAged, 80 and overArea Under CurveGlasgow Coma Scale*Hospital MortalityIntensive Care UnitsNoninvasive Ventilation / mortality*Pneumonia / therapy*PrognosisProspective StudiesRespiratory Distress Syndrome / therapy*Respiratory Insufficiency / therapy*Retrospective StudiesTime FactorsVital Signs*journal article10.1016/j.jcrc.2020.08.008