Brain-injured Patients Extubation Readiness Study

Inclusion Criteria: * Acute cerebral lesion with a Glasgow Coma Scale \<13 needing admission in ICU and mechanical ventilation with tracheal intubation for neurological cause : cerebrovascular stroke either ischemic or hemorrhagic including aneurysmal subarachnoid hemorrhage, traumatic brain injury, anoxo ischemic encephalopathy after cardiac arrest or brain tumour * Mechanical ventilation more than 48 hours * 18 to 75 years old * Neurological stability with no intracranial hypertension with minimal sedation * Glasgow Coma Scale motor response \< 6 * Spontaneous breathing trial succeeded * First extubation attempt Exclusion Criteria: * Posterior cranial fossa lesion * Admission for status epilepticus or central nervous system infection * Spinal cord injury (tetraplegia or paraplegia) * Uncontrolled status epilepticus or uncontrolled central nervous system infection * Care limitation plan * Chronic respiratory failure defined as ambulatory oxygen therapy or pressure support ventilation and/or proven COPD and/or ambulatory non-invasive CPAP therapy for sleep apnoea syndrome * More than 3 failed spontaneous breathing trials * Significant chest trauma (more than 2 broken ribs / broken sternum / with an indication of open thoracic surgery) * Surgery planned within 7 days * Tracheotomy or previous extubation outside of the protocol * Previous compromised upper airway permeability * Pregnant or breastfeeding woman * Adult under the protection of the law or without social assurance system * Inclusion in another clinical study about mechanical ventilation or weaning