Extubation With or Without Spontaneous Breathing Trial

Spontaneous breathing trial (SBT) has long been thought to be a essential process before extubation. In this study,the investigator hypothesized that SBT could be not essential during weaning from ventilator and investigated whether weaning could be better done without a spontaneous breathing trial in non-COPD（COPD, Chronic Obstructive Pulmonary Disease） critically ill patients. This study has revealed, for the first time, that compared with use of SBT in discontinuing ventilator process, patients underwent successful extubation without SBT. For this subset of patients the findings suggest that SBT may be excluded preceding extubation in a general intensive care population.