Vent Weaning Early physical and occupational therapy in mechanically ventilated, critically ill patients: a randomised controlled trial Early vs Late Tracheotomy for Prevention of Pneumonia in Mechanically Ventilated Adult ICU Patients 12-h pretreatment with methylprednisolone versus placebo for prevention of postextubation laryngeal oedema: a randomised double-blind trial Effect of Pressure Support vs Unassisted Breathing Through a Tracheostomy Collar on Weaning Duration in Patients Requiring Prolonged Mechanical Ventilation A Prospective Study of Indexes Predicting the Outcome of Trials of Weaning from Mechanical Ventilation