Prone Position With Different Types of Cushions in Patients With ARDS

Exclusion Criteria

• •Contra-indication to the prone position: intracranial pressure \> 30 mmHg or cerebral perfusion pressure \< 60 mmHg; massive haemoptysis needing urgent surgical or radiological treatment; tracheal or thoracic surgery in the last 15 days; facial trauma or surgery in the last 15 days; deep venous thrombosis or pulmonary embolism treated in the last 2 days; unstable bone dislocations of rachis, femur, rib cage, pelvis; mean systolic arterial pressure less than 70 mmHg despite vasopressive therapy and pregnancy
• •Severe acute respiratory distress syndrome (ARDS) caused b coronavirus disease 2019 (despite meeting the Berlin criteria for ARDS, their ventilatory mechanics are characterized by nearly normal compliance, something rarely seen in patients with ARDS from other etiologies)
• •contraindications for the use of Electrical Impedance Tomography (EIT) such as presence of a cardiac implantable electronic device
• •Pulmonary transplantation
• •Prone position before enrollment