Predictors Of Successful Extubation in Critically Ill Patients: Multicentre Observational Study

Primary Outcome Measures: Reintubation within 48 hours after extubation (logistic regression will be used to assess the risk factors) Secondary Outcome Measures: * Use of non-invasive positive pressure ventilation or nasal high flow within 48 hours after extubation. * Risk factors for extubation failure, with quantitative variables expressed as means (standard deviation) or medians (interquartiles 25%-75%) and compared using the student t test or Wilcoxon test as appropriate * Length of ICU and hospital stay, vital status at ICU and hospital discharge, 28-day mortality