High Flow Nasal Cannula vs Noninvasive Ventilation in Patients With Hypoxic Respiratory Failure Following Blunt Chest Trauma

Inclusion Criteria: * Age ≥18 y, * Willing and able to provide written informed consent prior to performing study procedures, * currently hospitalized and requiring medical care for non-sever blunt chest trauma (abbreviated injury severity scale ≤ 2) SpO2 90% or less while breathing 10 L/min. Exclusion Criteria: * Contraindications of noninvasive ventilation (face trauma or surgery, airway obstruction, upper gastrointestinal tract bleeding, disturbed level of consciousness), -smoker * intubation for any cause other than respiratory cause