%0 Journal Article %A Carbonell, Raquel %A Urgelés, Silvia %A Salgado, Melina %A Rodríguez, Alejandro %A Reyes, Luis Felipe %A Fuentes, Yuli V %A Serrano, Cristian C %A Caceres, Eder L %A Bodí, María %A Martín-Loeches, Ignacio %A Solé-Violán, Jordi %A Díaz, Emili %A Gómez, Josep %A Trefler, Sandra %A Vallverdú, Montserrat %A Murcia, Josefa %A Albaya, Antonio %A Loza, Ana %A Socias, Lorenzo %A Ballesteros, Juan Carlos %A Papiol, Elisabeth %A Viña, Lucía %A Sancho, Susana %A Nieto, Mercedes %A Del, M %A Lorente, Carmen %A Badallo, Oihane %A Fraile, Virginia %A Arméstar, Fernando %A Estella, Angel %A Abanses, Paula %A Sancho, Isabel %A Guasch, Neus %A Moreno, Gerard %A COVID-19 SEMICYUC Working Group and the LIVEN-Covid-19 Investigators %T Negative predictive value of procalcitonin to rule out bacterial respiratory co-infection in critical covid-19 patients. %D 2022 %U http://hdl.handle.net/10668/22321 %X Procalcitonin (PCT) and C-Reactive Protein (CRP) are useful biomarkers to differentiate bacterial from viral or fungal infections, although the association between them and co-infection or mortality in COVID-19 remains unclear. The study represents a retrospective cohort study of patients admitted for COVID-19 pneumonia to 84 ICUs from ten countries between (March 2020-January 2021). Primary outcome was to determine whether PCT or CRP at admission could predict community-acquired bacterial respiratory co-infection (BC) and its added clinical value by determining the best discriminating cut-off values. Secondary outcome was to investigate its association with mortality. To evaluate the main outcome, a binary logistic regression was performed. The area under the curve evaluated diagnostic performance for BC prediction. 4635 patients were included, 7.6% fulfilled BC diagnosis. PCT (0.25[IQR 0.1-0.7] versus 0.20[IQR 0.1-0.5]ng/mL, p These biomarkers at ICU admission led to a poor ability to predict BC among patients with COVID-19 pneumonia. Baseline values of PCT %K Bacterial co-infection %K C-reactive protein %K Covid-19 pneumonia %K Mortality %K Procalcitonin %~