RT Journal Article T1 The evolution of the ventilatory ratio is a prognostic factor in mechanically ventilated COVID-19 ARDS patients. A1 Torres, Antoni A1 Motos, Anna A1 Riera, Jordi A1 Fernandez-Barat, Laia A1 Ceccato, Adrian A1 Perez-Arnal, Raquel A1 Garcia-Gasulla, Dario A1 Peñuelas, Oscar A1 Lorente, Jose Angel A1 Rodriguez, Alejandro A1 de Gonzalo-Calvo, David A1 Almansa, Raquel A1 Gabarrus, Albert A1 Menendez, Rosario A1 Bermejo-Martin, Jesus F A1 Ferrer, Ricard A1 Amaya Villar, Rosario A1 Añon, Jose M A1 Barbera, Carme A1 Barberan, Jose A1 Blandino Ortiz, Aaron A1 Bustamante-Munguira, Elena A1 Caballero, Jesus A1 Carbajales, Cristina A1 Carbonell, Nieves A1 Catalan-Gonzalez, Mercedes A1 Galban, Cristobal A1 Gumucio-Sanguino, Víctor D A1 de la Torre, Maria Del Carmen A1 Diaz, Emili A1 Estella, Angel A1 Gallego, Elena A1 Garcia Garmendia, Jose Luis A1 Garnacho-Montero, Jose A1 Gomez, Jose M A1 Huerta, Arturo A1 Jorge Garcia, Ruth Noemi A1 Loza-Vazquez, Ana A1 Marin-Corral, Judith A1 Martínez de la Gandara, Amalia A1 Martinez Varela, Ignacio A1 Lopez Messa, Juan A1 M Albaiceta, Guillermo A1 Novo, Mariana Andrea A1 Peñasco, Yhivian A1 Pozo-Laderas, Juan Carlos A1 Ricart, Pilar A1 Salvador-Adell, Inmaculada A1 Sanchez-Miralles, Angel A1 Sancho Chinesta, Susana A1 Socias, Lorenzo A1 Sole-Violan, Jordi A1 Suares Sipmann, Fernando A1 Tamayo Lomas, Luis A1 Trenado, Jose A1 Barbe, Ferran K1 COVID-19 K1 Coronavirus K1 Mechanical ventilation K1 SARS-CoV-2 K1 Ventilatory ratio K1 Área de Gestión Sanitaria Sur de Sevilla K1 Área de Gestión Sanitaria de Jerez, Costa Noroeste y Sierra de Cádiz AB Mortality due to COVID-19 is high, especially in patients requiring mechanical ventilation. The purpose of the study is to investigate associations between mortality and variables measured during the first three days of mechanical ventilation in patients with COVID-19 intubated at ICU admission. Multicenter, observational, cohort study includes consecutive patients with COVID-19 admitted to 44 Spanish ICUs between February 25 and July 31, 2020, who required intubation at ICU admission and mechanical ventilation for more than three days. We collected demographic and clinical data prior to admission; information about clinical evolution at days 1 and 3 of mechanical ventilation; and outcomes. Of the 2,095 patients with COVID-19 admitted to the ICU, 1,118 (53.3%) were intubated at day 1 and remained under mechanical ventilation at day three. From days 1 to 3, PaO2/FiO2 increased from 115.6 [80.0-171.2] to 180.0 [135.4-227.9] mmHg and the ventilatory ratio from 1.73 [1.33-2.25] to 1.96 [1.61-2.40]. In-hospital mortality was 38.7%. A higher increase between ICU admission and day 3 in the ventilatory ratio (OR 1.04 [CI 1.01-1.07], p = 0.030) and creatinine levels (OR 1.05 [CI 1.01-1.09], p = 0.005) and a lower increase in platelet counts (OR 0.96 [CI 0.93-1.00], p = 0.037) were independently associated with a higher risk of death. No association between mortality and the PaO2/FiO2 variation was observed (OR 0.99 [CI 0.95 to 1.02], p = 0.47). Higher ventilatory ratio and its increase at day 3 is associated with mortality in patients with COVID-19 receiving mechanical ventilation at ICU admission. No association was found in the PaO2/FiO2 variation. PB BioMedCentral YR 2021 FD 2021-08-09 LK http://hdl.handle.net/10668/18516 UL http://hdl.handle.net/10668/18516 LA en NO Torres A, Motos A, Riera J, Fernández-Barat L, Ceccato A, Pérez-Arnal R, et al. The evolution of the ventilatory ratio is a prognostic factor in mechanically ventilated COVID-19 ARDS patients. Crit Care. 2021 Sep 13;25(1):331 DS RISalud RD Apr 13, 2025