Sleep Quality and Risk of Intubation in Intensive Care Units Patients With Hypoxemic Acute Respiratory Failure

Inclusion Criteria: * Acute respiratory failure * hypoxemia with PaO2/FiO2 ratio \< 300 mmHg * aged of 18 years or more Exclusion Criteria: * Need of immediate intubation * Need of vasopressor drugs * coma with Glasgow scale \< 8 * Acute respiratory failure linked to cardiogenic pulmonary oedema * Chronic respiratory insufficiency * Peripheral or central nervous system pathology * Known psychiatric pathology or agitation * Patient with decision of no intubation * Patient refusal * Pregnant or breastfeeding women * Patient under legal guardianship or protection * Patients with no health insurance coverage