Outcomes
death, atelectasis
SECONDARY, DECUBITUS, ATELECTASIS
Static compliance of the respiratory system was assessed as the primary outcome. Static compliance of the respiratory system (ml/cmHThe secondary outcomes included dynamic compliance (ml/cmHTo measure ventilatory mechanics and oxygenation, the participant was positioned in dorsal decubitus and with the backrest inclined at 30 degrees. Mechanical ventilation was programmed in controlled volume mode, tidal volume set at 6 ml per kilogram of predicted weight, constant inspiratory flow rate and a 3-second inspiratory pause. The evaluator performed the procedures for the measurements, recorded the information presented by monitoring the mechanical ventilator and performed the calculations to evaluate the ventilatory mechanics manually [Chest X-rays assessed the incidence of atelectasis and were performed daily on all study participants as part of routine care. All X-rays were reviewed and interpreted by a radiology specialist who was not involved in the study.Extubation success was defined as the removal of the endotracheal tube and the absence of ventilatory support within 48 hours following extubation [Other secondary outcomes, including mechanical ventilation time, length of ICU and hospital stays, and in-hospital mortality, were assessed based on medical records at the time of hospital discharge or participant death.